JP2005017811A - Optical control module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce mounting cost, propagation loss and reflection loss, to prevent the deterioration of performance when the pitch among ports is increased, to eliminate variation of the loss among ports, and to reduce the mounting cost of optical components in outer parts of modules to be arranged at the respective ports. <P>SOLUTION: A first array element mounting block and a second array element mounting block are arranged by being supported by a supporting structure, the array element mounting faces are separated and face to each other. A light beam branching element which passes a part of the light beam and reflects the rest, is arranged on the respective array element mounting faces, the light beam sent to the inside via a transmission window is alternately and successively reflected by the light beam branching element on the side of the first array element mounting block and by the light beam branching element on the side of the second array element mounting block, thus the light beam propagates along an optical path in zigzag. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical control module used for optical communication. More specifically, the present invention relates to an optical control module used in wavelength multiplexing optical transmission or the like. In an apparatus having a plurality of optical transmission paths, light having a specific wavelength or a specific amount of light is used. The present invention relates to an optical control module that enables signals to be extracted or inserted into each optical transmission line.
[0002]
[Prior art]
With the development of wavelength multiplexing transmission technology in recent years, attention has been focused on functional devices having a plurality of optical transmission paths (ports).
Specifically, it has one common port and a plurality of input / output ports, and an optical signal having a specific wavelength can be extracted or inserted from each input / output port. An example is an optical switch that can arbitrarily switch an optical connection with an input / output port.
[0003]
Similarly, an optical add / drop multiplexer device combining these multiplexing / demultiplexing elements and optical switches and an optical transceiver combining a multiplexing / demultiplexing element and a plurality of light emitting elements or light receiving elements are also attracting attention.
In particular, for multiplexing / demultiplexing elements that are indispensable in wavelength division multiplexing transmission, various systems and structures have been proposed in order to realize characteristics such as small size, low cost, and low loss.
[0004]
Patent Literature 1 below is an example of technical literature related to an optical demultiplexing device.
As shown in FIG. 42 (this FIG. 42 is the same as FIG. 1 of Patent Document 1, but the reference numerals are changed), the optical demultiplexing element in Patent Document 1 transmits only light of a specific wavelength. The wavelength filters 01 to 04 for reflecting the light beams of other wavelengths are arranged, and the light beams of the wavelengths reflected from the wavelength filters 01 to 04 are propagated in a relay manner using the relay focusing mirrors 05 to 07. The method is adopted. The light beams transmitted through the wavelength filters 01 to 04 are detected as single-wavelength optical signals by the detectors 08 to 011 prepared for the respective wavelength filters 01 to 04. Note that 012 is incident light.
[0005]
The following Patent Document 2 is an example of technical documents related to multiplexing / demultiplexing elements.
The multiplexing / demultiplexing element in this patent document is a single mode fiber (SMF) as shown in FIG. 43 (FIG. 43 is the same as FIG. 2 of Patent Document 2, but the reference numerals are changed). ) The substrate 023 and 024 on which one optical transmission line in which a graded index fiber (GIF) 022 is connected to the end of 021 is formed in an array is opposed to each other, and the first substrate 023 A reflective film is formed on the smooth end surface of the second substrate 024, and a band pass filter is formed on the smooth end surface of the second substrate 024 at the position where each GIF is formed. A method of combining and demultiplexing by multiple reflection of light rays is adopted.
[0006]
The following Patent Document 3 is an example of a technical document relating to a lens array transparent block used for an optical multiplexing / demultiplexing element or an optical add / drop element.
The lens array transparent block in Patent Document 3 is transparent blocks 003-1a, 003 as shown in FIG. 44 (FIG. 44 is the same as FIG. 1 of Patent Document 3, but the reference numerals are changed). 2a, a lens array transparent block 003-1, 003-2 in which a plurality of convex lenses 002-1 to 002-8 are integrally formed is manufactured, and the lens array transparent block is connected to one convex lens array block 003-1 and the other. The convex lens array block 003-2 and the parallel transparent block 004 are divided, and the parallel transparent block 004 including the convex lens 002-0 is sandwiched between the lens array transparent blocks 003-1 and 003-2. Yes.
[0007]
The surface of the parallel transparent block 004 is formed with a plurality of wavelength filters 006-1 to 006-8 that transmit only light of a specific wavelength and reflect light of other wavelengths. A method is employed in which light is multiplexed and demultiplexed by multiple reflection of light inside.
[0008]
[Patent Document 1]
JP 2000-162466 A
[Patent Document 2]
Japanese Patent Laid-Open No. 11-190809
[Patent Document 3]
JP 2002-40283 A
[0009]
[Problems to be solved by the invention]
However, in the conventional technique shown in Patent Document 1 (FIG. 42), when the optical block is integrally formed, if glass is used, the manufacturing cost and the molding accuracy of various parts are in a trade-off relationship, and thus high-precision processing is performed. Therefore, there is a problem that the manufacturing cost increases. Further, there is a problem that propagation loss and reflection loss increase when resin is used.
[0010]
In the prior art disclosed in Patent Document 2 (FIG. 43), there is a problem that the pitch of the GIF array cannot be increased while maintaining the transmission characteristics of the filter and the coupling efficiency between the input and output GIFs. For example, if the pitch is increased without changing the distance between the substrates, the incident angle of the light beam transmitted / reflected through the bandpass filter also increases, and the transmission characteristics of the filter deteriorate. Further, if the distance between the substrates is increased while maintaining the above incident angle in order to prevent the deterioration of the transmission characteristics of the filter, the collimating property of the light beam that is reflected multiple times deteriorates, so that the coupling efficiency between the input and output GIFs decreases.
[0011]
In the prior art shown in Patent Document 3 (FIG. 44), when optical components such as a single mode optical fiber and a light emitting element are arranged outside the lens array transparent block in an array, these optical components and the transparent block are arranged. The tolerance of positional deviation relative to the lens array is small, and the cost for mounting the optical component within the tolerance increases. In addition, in order to suppress the variation between ports in the loss at each port, it is necessary to optimize the position of the optical component placed in each port or the shape of the convex lens formed in the lens array transparent block of each port. There is also a problem that cost reduction effects such as mass production and assembly are lost.
[0012]
The present invention has a problem as described above, that is, in a module having a plurality of optical transmission paths (ports), a plurality of light beams having a specific wavelength or a specific light amount are reflected by a method of multiply reflecting a propagation light beam inside the module. Occurs when extracting or inserting into the optical transmission line
1) Increase in module manufacturing costs
2) Increase in propagation loss
3) Increase in reflection loss
4) Performance degradation when the pitch between ports is expanded
5) Inter-port loss variation
6) Increased mounting costs for optical components outside the module placed at each port
The purpose is to solve such problems.
[0013]
[Means for Solving the Problems]
The first invention for solving the above-mentioned problems is
It has a plurality of beam branching elements that transmit a part of incident light and reflect the rest,
Having at least one transmission window for inputting and outputting propagating light between the outside and inside of the light control module;
The light beam splitting element and the transmission window are formed on an array element mounting surface which is a predetermined surface of the array element mounting block,
A light control module in which a reflection surface for reflecting incident light is formed on a part of the array element mounting surface,
A plurality of array element mounting blocks are arranged by a holding structure so that the two array element mounting surfaces are spaced apart from each other,
The internal propagating light beam is alternately reflected by the reflecting surface of the first array element mounting block and the second array element mounting block or the beam branching element alternately, and along the zigzag optical path between the opposing array element mounting surfaces. The light control module is characterized in that the arrangement position / angle of each array element mounting block and the arrangement position / angle of each light beam branching element and reflection surface are set so as to propagate.
[0014]
For convenience of the following detailed explanation,
"Light control element" is a generic term for the micro-reflective plane where light rays actually enter and reflect among the reflective surfaces of the light beam splitter and array element mounting surface.
The intersection of the incident optical axis and the reflected optical axis of the light incident on and reflected by the light control element is the “element reflection point”.
From the light incident on the light control element, the micro-plane that determines the reflection optical axis is the “element reflection surface”,
Mounted outside the light control module, placed at the port position of the light control module, emits light that enters the light control module, and combines light output from the light control module Specifically, a general term for an optical fiber, a light-emitting element such as a laser diode, a light-receiving element such as a photodiode, a lens system, and a combination thereof, or a module of these members is referred to as “external optical element. Is defined.
[0015]
Examples of the beam branching element include a wavelength selection element and a light quantity splitting element.
As a specific example of the wavelength selection element, when a specific wavelength is fixed and used, a band pass filter, a low pass filter, a high pass filter, and the like using a multilayer film are conceivable. Further, the wavelengths to be transmitted may be changed independently by external control. In that case, a wavelength tunable filter using the EO effect or the TO effect, an etalon filter using the MEMS technology, and the like are conceivable.
[0016]
Moreover, the case where the wavelength band which a wavelength selection element permeate | transmits contains all the wavelength bands of an incident light ray is also considered, In that case, it corresponds to an optical transmission window. Conversely, when not transmitting all the wavelength bands of incident light, it has the same function as a plane mirror.
[0017]
As a specific example of the light quantity dividing element, a reflection type optical attenuator can be considered. Further, the amount of light to be transmitted may be changed by external control, and when the control range of the amount of light to be transmitted corresponds to all the amounts of incident light, it has a function equivalent to that of a reflective optical switch.
[0018]
These wavelength selection elements or light quantity splitting elements may be affixed to the surface of the array element mounting block. However, if a depression or a through hole can be formed in the array element mounting block, it may be embedded in the inside. it can. In the case of embedding in the inside of the through hole, it is possible to reduce the Fresnel loss due to the refractive index difference of the medium and the propagation loss due to the material of the array element mounting block.
[0019]
In the array element mounting block, a reflective surface can be formed of a metal or a multilayer film on the surface of the region where the wavelength selection element and the light quantity dividing element are not formed. Alternatively, a separately prepared flat mirror chip or the like can be pasted or embedded in the array element mounting block to form a reflecting surface.
[0020]
When the reflective surface is formed of metal or multilayer film, even if the array element mounting surface is complex, a uniform reflective surface can be formed at once, reducing the manufacturing process and reducing reflection loss and module manufacturing cost. Is possible.
[0021]
Specifically, the material for the array element mounting block is selected according to the purpose, such as resin, metal, glass, silicon, etc., and the surface is sloped, recessed, protrusion, curved surface by cutting, injection molding, etching, etc. It is conceivable to form a complex structure such as that, and then form a reflective film on the surface of the structure.
[0022]
As a method for forming the reflective film, a method of performing vapor deposition, plating, sputtering, or the like on a surface of the array element mounting block with a metal or a multilayer film can be considered. By using a multilayer film, it is possible to improve the reflectivity and to reduce the polarization dependence upon reflection.
[0023]
When forming the reflective film directly on the array element mounting block, if the smoothness and adhesion of the reflective film cannot be obtained, several types of films for improving the smoothness and adhesion may be formed below the reflective film. it can. In this case, it is possible to provide a plurality of functions with one kind of film.
[0024]
Some methods are also conceivable in the case where the light beam is transmitted through the area where the light control element is not formed in the array element mounting block. One is a method of manufacturing the array element mounting block itself with an optically transparent material. In general, glass or transparent resin is used. However, when the light beam that passes through the wavelength selection element and the light quantity splitting element is controlled from the outside, a material such as silicon is used, and an integrated circuit for control is integrally formed. It is also possible. In the case where the array element mounting block is manufactured using an optically opaque material, a physical through hole may be formed in a region where light is to be transmitted. Further, as described above, the light beam may be transmitted using a wavelength selection element that transmits all wavelengths of the incident light beam.
[0025]
The gap between the two array element mounting blocks is a low-loss area where multiple reflected light propagates. Generally, air or inert gas is present, but it can also be evacuated. it can. In this case, the propagation loss is almost negligible as compared with the case where light propagates through the inside of glass or transparent resin.
[0026]
The operating principle of the present invention is as follows.
A light beam emitted from the external light element passes through any one of an optically transparent region, a transmission window that is a physical through hole, and a light beam branching element, and is input into the module.
[0027]
The light beam input into the module passes through the area between the array element mounting surface of the first array element mounting block and the array element mounting surface of the second array element mounting block from the plurality of light control elements and the reflecting surface. Propagate by repeating reflection.
[0028]
When the light control element is a wavelength selection element or a light quantity splitting element, a light beam having a specific wavelength or a specific light quantity passes through the light control element and is emitted to the outside of the light control module. Light beams having other wavelengths or the remaining light amount are reflected by the light control element and delivered to another light control element on the opposing array element mounting surface.
[0029]
At least one light beam among the light beams transmitted through the wavelength selection element or the light amount dividing element and emitted to the outside of the module is received by the external light element.
[0030]
In order to perform the operation as described above, the installation position and installation angle of the external optical element, the element reflection point of the light control element, and the element reflection surface are designed.
[0031]
The effects of the first invention are as follows.
O When light is propagated inside the light control module, the propagation loss can be greatly reduced compared to the case of propagating through the inside of glass or transparent resin.
O For the reason described above, even if the gap between the two array element mounting surfaces facing each other is enlarged, the increase in loss can be suppressed. Accordingly, the degree of freedom in designing the optical axis of the propagating light beam inside the module can be improved.
O The wavelength selection element formed on the array element mounting block by changing a part or all of the gap because the gap between the two array element mounting surfaces opposed to each other can be enlarged for the above reason. It is possible to change the arrangement interval of the light quantity dividing elements. Therefore, the pitch between ports can be increased.
-Since the reflecting surface is formed on the array element mounting block side, the light beam propagating inside the module is a metal film layer or resin film layer formed for the purpose of improving the adhesion and smoothness of the reflecting surface. Do not pass through. Therefore, characteristic deterioration such as loss increase and polarization dependency increase due to the metal film layer and the resin film layer does not occur.
Since the plurality of array element mounting surfaces are opposed to each other by a holding structure through a space, the relative installation interval and installation angle of the array element mounting surface, and their accuracy are determined by the shape of the holding structure and It depends on the manufacturing accuracy and does not depend on the shape or manufacturing accuracy of the array element mounting block. Therefore, it is possible to use a holding structure having a material, shape, and manufacturing accuracy in accordance with the purpose regardless of the material, shape, and manufacturing accuracy of the array element mounting block, thereby reducing the module manufacturing cost.
[0032]
The second invention is
The light control module according to claim 1,
A first virtual plane including a plurality of contacts between the holding structure and the first array element mounting block;
The light control module is characterized in that a second virtual plane including a plurality of contact points between the holding structure and the second array element mounting block is parallel.
[0033]
When the array element mounting surfaces are made to face each other, a part or all of the array element mounting surface may be a non-planar shape such as a sawtooth shape or a curved surface. In this case, a first virtual plane including a plurality of contacts of the holding structure and the first array element mounting block and a second virtual plane including a plurality of contacts of the holding structure and the second array element mounting block are considered. For the two array element mounting blocks, if the first and second virtual planes are parallel to each other, the two array element mounting surfaces can be regarded as being parallel to each other. In such a case, the height of the holding structure that supports the array element mounting block can be made uniform.
[0034]
The effects of the second invention are as follows.
O The array element mounting surface can be opposed to each other by the holding structure having the same height regardless of the shape of the array element mounting surface. Therefore, the shape of the holding structure can be simplified, and the module manufacturing cost can be reduced.
[0035]
The third invention is
The light control module according to claim 1 or 2,
The light control module is characterized in that a reflection surface of the array element mounting surface is integrally formed with the array element mounting block.
[0036]
By pasting glass or transparent resin molded into a convex lens shape on the reflective surface of the array element mounting surface, it is possible to realize a function of focusing on a specific position while reflecting incident light. .
[0037]
In addition, by finely processing the shape of the reflecting surface that is integrally formed with the array element mounting block, a Fresnel mirror that applies the principle of the Fresnel lens is constructed, so that incident light is reflected while focusing on a specific position. It is also possible to realize such a function.
[0038]
The effects of the third invention are as follows.
O After manufacturing the array element mounting block, there is no need to separately form a complex-shaped array element mounting surface. Therefore, since the manufacturing process can be reduced, the manufacturing cost can be reduced.
O It is possible to integrally form an array element mounting surface having a complicated shape on an array element mounting block by injection molding using a mold. Accordingly, it is possible to manufacture a large amount of parts with high shape accuracy, and it is possible to reduce manufacturing costs.
O When a plurality of array element mounting surfaces having a complicated shape are formed in one array element mounting block, they can be collectively formed, and the accuracy of the formation position can be improved. Therefore, the manufacturing cost can be reduced.
〇 Utilizing the difference in refractive index between two types of media even when realizing the function of focusing on a specific position while reflecting incident light by devising the shape of the reflective surface of the array element mounting surface Instead, only the shape of the reflective surface needs to be designed. Therefore, compared with the case where two types of refractive index differences are used, Fresnel loss due to the refractive index difference of the medium, light characteristic deterioration due to inhomogeneity of the medium, and absorption loss due to the medium can be ignored. From these things, the reflection loss by a light reflection condensing element can be reduced significantly.
[0039]
The fourth invention is:
In the light control module according to any one of claims 1 to 3,
The light control module is characterized in that the holding structure is integrally formed with at least one array element mounting block.
[0040]
As a specific holding structure, a side wall-like structure formed perpendicular to the array element mounting surface is conceivable, and a plurality of side walls may be formed as necessary.
[0041]
The effects of the fourth invention are as follows.
O Large structures and microstructures can be manufactured on one array element mounting block with high accuracy by using injection molding or the like. Therefore, it is possible to improve the relative installation position accuracy regardless of the size of the gap between the facing array element mounting surfaces, and the passive alignment structure is part of the array element mounting block so that the array element mounting surfaces face each other. It can also be formed. Therefore, it is possible to reduce the alignment cost for a plurality of light beam branching elements and reflection surfaces formed in these array element mounting blocks while improving their relative installation position and installation angle. By these things, the cost required for the assembly and adjustment of the module can be reduced, and the module manufacturing cost can be reduced.
O Since there is no need to separately prepare components for holding a plurality of array element mounting blocks opposed in space, the number of components can be reduced. Therefore, the module manufacturing cost can be reduced.
〇 A structure in which a plurality of external light elements or a structure in which a plurality of external light elements are separately formed and a structure for performing relative positioning with the light control module are integrated into the array element mounting block in which the holding structure is integrally formed. It is also possible to form a part in advance. Therefore, it is possible to reduce the mounting cost of the optical components outside the module arranged at each port.
[0042]
The fifth invention is:
The light control module according to any one of claims 1 to 4,
The light beam splitting element transmits a light beam having a specific wavelength among incident light beams and reflects a light beam having a wavelength other than that, or transmits a light beam having a specific light amount among incident light beams and transmits a light beam having the remaining light amount. The light control module is a light quantity dividing element that reflects light.
[0043]
The effects of the fifth invention are as follows.
○ When the light splitting element is a wavelength selection element, when one wavelength multiplexed light is sent inside the module, the light of multiple wavelength bands from the inside of the module according to the wavelength band that each wavelength selection element transmits (reflects) Can be realized, or when a plurality of single wavelength light beams are sent inside the module, a multiplexing function can be realized in which one wavelength multiplexed light beam can be extracted from the inside of the module.
○ When the light splitting element is a light splitting element, when a single light beam is sent inside the module, each light splitting element transmits (reflects) multiple light quantities from inside the module, depending on the amount of light that is transmitted (reflected) and the number of light splitting elements It is possible to realize a light distributor capable of extracting the light beam.
[0044]
The sixth invention is:
The light control module according to any one of claims 1 to 5,
A part of the reflective surface of the array element mounting surface is a flat surface.
[0045]
The effects of the sixth invention are as follows.
In the case where the reflective surface is formed on the array element mounting surface, it is not necessary to form an array element mounting block having a complicated shape, so that the part manufacturing cost can be reduced.
○ When propagating light propagating inside the module is incident on a flat reflecting surface, the incident optical axis is not diffused and condensed (without changing the complex beam parameters of the Gaussian beam discontinuously). And the propagation direction of the propagating light can be changed according to the angle formed by the reflecting surface. Therefore, it is possible to improve the degree of freedom in designing the optical axis of the propagating light beam inside the module.
○ If a projection-like structure is formed on the array element mounting block and a flat reflective surface is formed on the top surface, or a concave structure is formed and a flat reflective surface is formed on the bottom surface The optical path length between the beam branching elements can be expanded and contracted for the propagating light beam propagating through the reflecting surface. Therefore, it is possible to improve the degree of freedom in designing the optical axis of the propagating light beam inside the module.
[0046]
A seventh invention provides the light control module according to any one of claims 1 to 6,
A part of the reflection surface of the array element mounting surface is a sawtooth shape.
[0047]
The surface corresponding to the slope of the sawtooth structure (sawtooth slope) may be a protrusion-like structure or a depression-like structure with respect to the surface of the array element mounting block. A light control element may be formed on the slope. In this case, the light control element can be formed on the slope by pasting, embedding, or integral formation.
[0048]
Further, there may be a plurality of types of installation angles of the slope formed on one array element mounting block. The installation direction of the slope may be one or both directions with respect to the plane containing the optical axis of the light beam propagating inside the module, and the slopes in both directions are formed adjacent to each other, thereby forming a mountain structure or valley. It may be a protrusion or a depression of a shape structure.
[0049]
Moreover, the case where the installation direction of a slope is not contained in the plane containing the optical axis of the light beam which propagates the inside of a module is also considered.
[0050]
A reflective film can be formed directly on the sawtooth array element mounting surface with metal or multilayer film, and it can be used as a sawtooth reflective surface, or a plate-shaped wavelength selection element, light quantity splitting element, etc. Can also be used. As in the latter case, when a plate-like wavelength selection element, light quantity splitting element, or the like is attached, the array element mounting block can be manufactured using an optically transparent material.
[0051]
The effects of the seventh invention are as follows.
O The direction of the reflected optical axis can be freely designed in three dimensions for light rays that propagate inside the module and enter and reflect on the array element mounting surface. Therefore, it is possible to improve the degree of freedom in designing the optical axis of the propagating light beam inside the module.
○ For the above reasons, a saw-toothed slope is installed so that the optical axis of the light beam input / output to / from the outside of the module and the angle formed by the array element mounting surface are orthogonal to each other. The optical axes of the elements can be made orthogonal. Therefore, the installation angle of the optical axis of the external optical element can be simplified, the installation density of the plurality of external optical elements can be increased, and the mounting cost can be reduced.
〇 For the above reasons, when multiple light beams are input / output outside the module from one array element mounting block, the lens array, fiber array, LD array, PD array, or a combination of these can be used as external optical elements It can be installed parallel to the array element mounting surface. Therefore, the positions and angles of the external optical elements of the plurality of ports can be collectively adjusted, and the mounting cost can be reduced.
O For the above reason, a saw-toothed slope can be installed so that the reflection optical axis of the light beam propagating through the module and entering the array element mounting surface is parallel to the array element mounting surface. In this case, the reflection optical axis may not be included in the plane including the propagation light beam inside the module, but may be orthogonal to the plane. Accordingly, the optical axis of the external optical element for entering the light beam inside the module and the optical axis of the external optical element for receiving the light beam emitted to the outside of the module can be orthogonalized, and the arrangement of the external optical element is free. The degree can be greatly improved.
O For the above reason, the incident angle of the light beam propagating through the module and entering the wavelength selection element can be changed. Therefore, it is possible to reduce the incident angle of the light beam incident on the wavelength selection element, and it is possible to improve the filter characteristics of the transmitted light of the wavelength selection element and to reduce the polarization dependence.
O For the above reasons, the arrangement interval of the light control elements formed in one array element mounting block can be changed. Therefore, when a plurality of light beams are input / output to / from the module from one array element mounting block, it is possible to change the arrangement interval of the external optical elements, and to improve the degree of freedom of arrangement of the external optical elements. it can.
〇 When a light beam is incident on the inside of the module from an external optical element, the array element mounting block is suitable so that the reflected light beam propagates along the incident optical axis only when the incident angle matches the design value. A serrated reflection surface can be formed in such a region. In this case, the reflected light beam propagates along the incident optical axis only when the external optical element is mounted as designed. Therefore, by monitoring the amount of reflected light and adjusting the installation position and angle of the external optical element so that the amount of light is maximized, the incident optical axis from the outside can be brought close to the design value. The mounting cost of optical components outside the module can be reduced.
[0052]
The eighth invention
The light control module according to any one of claims 1 to 7,
A part of the reflective surface of the array element mounting surface is a concave surface.
[0053]
The effects of the eighth invention are as follows.
Since the concave reflecting surface has a function equivalent to that of the concave mirror, it is possible to realize a function of focusing on a specific position while reflecting incident light. In this case, the wavelength dependence of light rays propagating through the module can be ignored. Therefore, it is possible to widen the usable wavelength band of propagating light as compared with the case of using a convex lens or a Fresnel mirror.
○ Because the concave reflecting surface has the same function as the concave mirror, compared with the case of using a convex lens to realize the function of focusing on a specific position while reflecting incident light, it is more The same power (focal length) can be provided with a large radius of curvature. Therefore, it is possible to reduce spherical aberration and reduce the zag amount of the concave mirror.
[0054]
The ninth invention
The light control module according to claim 8,
A part of the reflection surface of the array element mounting surface is a spherical surface.
[0055]
The effects of the ninth invention are as follows.
O When a spherical reflecting surface is used as a concave mirror, the only optical design parameter is the radius of curvature, and surface processing is easy. In addition, since the manufacturing tolerance design is easier than that of the aspherical shape, it is easy to shorten the design time, and thus the manufacturing cost can be reduced.
〇 When using a spherical reflecting surface as a concave mirror, the light beam incident on the mirror surface is translated, and the incident position is changed slightly from the mirror optical axis, while maintaining the optical performance such as focal length and reflecting. Only the optical axis direction of the light beam can be changed three-dimensionally. Therefore, the degree of freedom in optical design of propagating light can be improved.
[0056]
The tenth invention is
The light control module according to any one of claims 1 to 9,
A portion between the array element mounting surface of the first array element mounting block and the array element mounting surface of the second array element mounting block is filled with an optically transparent waveguide member. The light control module.
[0057]
In the tenth invention, a waveguide member having a refractive index comparable to the refractive index of the array element mounting block and having a smaller propagation loss than the transparent resin is used as the waveguide member. In this case, there is an effect of reducing a loss derived from the refractive index difference.
[0058]
In other words, the present invention
In a module having a plurality of optical transmission lines (ports), when extracting or inserting a light beam having a specific wavelength or a specific amount of light into a plurality of optical transmission lines by means of multiple reflection of propagating light rays inside the module. The purpose is to solve the problems that occur. And as described above, according to the present invention,
1) Reduction of module manufacturing costs
2) Reduction of propagation loss
3) Reduction of reflection loss
4) Increased pitch between ports
5) Reduction in mounting costs for optical components outside the module placed at each port
6) Improving the degree of freedom in placing optical components outside the module placed at each port
7) Broadening the wavelength band of propagating light inside the module
8) Improvement of the degree of freedom in designing the optical axis of the propagating light beam inside the module
It is possible to provide a light control module having the following effects.
[0059]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. However, the following embodiments do not limit the present invention.
[0060]
<First Embodiment>
FIG. 1 is a schematic configuration diagram of a light control module 100 according to the first embodiment of the present invention. FIG. 2 conceptually shows light rays that enter the module, propagate inside the module, and exit outside the module.
[0061]
The members indicated by reference numerals 101 and 102 are array element mounting blocks, the members indicated by reference numerals 103, 104, and 105 are convex lenses, the members indicated by reference numerals 106 and 107 are wavelength selection elements, and the reference numeral 108 is a plane mirror. Reference numerals 109 and 110 are optical transmission windows.
[0062]
Hereinafter, an element having a light control function of reflecting all incident light rays and focusing the reflected light rays at a specific position is defined as a light reflecting / condensing element.
The light reflecting and condensing elements (convex lenses) 103, 104, and 105 have a light control function of reflecting all incident light rays and focusing the reflected light rays at a specific position.
The wavelength selection elements 106 and 107 have a light control function of transmitting a light having a specific wavelength and reflecting a light having a wavelength other than the incident light.
The plane mirror 108 has a light control function of reflecting all incident light rays.
[0063]
In the first array element mounting block 101, a transmission window 109 and a plurality of light reflecting and condensing elements 103 to 105 are installed at equal intervals, and in the second array element mounting block 102, a plane mirror 108, a plurality of The wavelength selection elements 106 and 107 and the transmission window 110 are arranged at equal intervals.
[0064]
In this case, each of the light control elements 103 to 105 and 109 is formed on the array element mounting surface 101a which is one predetermined surface among the surfaces of the first array element mounting block 101. In addition, the light control elements 106 to 108 and 110 are formed on the array element mounting surface 102a, which is one predetermined surface of the surfaces of the second array element mounting block 102.
[0065]
The first array element mounting block 101 and the second array element mounting block 102 are opposed in parallel through a space. That is, the array element mounting block 101 and the array element mounting block 102 are held so that the array element mounting surface (virtual plane) 101a and the array element mounting surface (virtual plane) 102a face each other in parallel while being separated from each other. It is arranged while being supported by a structure (not shown). A portion between the array element mounting surface 101a and the array element mounting surface 102a is a space.
[0066]
In this light control module 100, the light beam input to the portion (space) between the array element mounting surface 101a and the array element mounting surface 102a via the transmission windows 109 and 110 or the wavelength selection elements 106 and 107 is converted into the array element. The light reflecting and condensing elements 103 to 105 formed on the mounting surface 101a, and the wavelength selecting elements 106 and 107 and the plane mirror 108 formed on the array element mounting surface 102a are alternately and sequentially reflected so that the array element mounting surface 101a and the array element are reflected. The arrangement positions and arrangement angles of the array element mounting blocks 101 and 102 and the arrangement positions and arrangement angles of the light control elements 103 to 108 are set so as to propagate along the zigzag optical path with the mounting surface 102a. Has been.
[0067]
Hereinafter, as a specific example, the principle of operation when the light control module 100 according to the present embodiment is used as a duplexer will be described.
[0068]
Incident light from the outside passes through the transmission window 109 and is guided into the module. The guided propagation light is incident on and reflected by the flat mirror 108, is alternately reflected by the light reflecting and condensing elements 103 to 105 and the wavelength selecting elements 106 and 107, and propagates inside the module. In the case of the use form as a demultiplexer, the light including the wavelengths reflected by all the wavelength selection elements 106 and 107 among the propagating light can be emitted to the outside of the module by passing through the transmission window 110. .
[0069]
Each time the propagating light beam enters each of the wavelength selection elements 106 and 107, a light beam including a specific wavelength is emitted to the outside of the module, and a light beam including other wavelengths is reflected, and the light reflecting / condensing elements 103 to 105 are reflected. And is propagated to the adjacent wavelength selection element. By repeating these processes, the propagating light beam is demultiplexed.
[0070]
Among the propagating light rays, the light rays including the wavelengths reflected by all the wavelength selection elements 106 and 107 are emitted as one light ray to the outside of the module via the transmission window 110. This light beam can be coupled to an optical fiber by a lens system for optical coupling or the like and reused as an optical signal for transmission. Further, it is also possible to optically couple to an input port of another light control module and connect a plurality of light control modules. In addition, in the case where light rays including wavelengths reflected by all the wavelength selection elements 106 and 107 are unnecessary among the propagating light rays, strays inside the module can be prevented by passing through the transmission window 110 and exiting the module. can do.
[0071]
The module can also be used as a multiplexer by reversing the traveling direction of light rays when used as a duplexer as described above. That is, a plurality of incident light rays from the outside are incident in parallel to each other so as to pass through the plurality of wavelength selection elements 106 and 107 and the transmission window 110. At that time, light including a specific wavelength that has passed through the wavelength selection elements 106 and 107 and entered inside is reflected by the light reflection condensing elements 103 to 105, and the reflected light enters the adjacent wavelength selection element. Install at such an incident angle. In this way, incident light rays from the outside are combined by propagating inside the module, and are emitted as one light ray from the transmission window 109 to the outside.
[0072]
However, in the case of the use form as a multiplexer, among the light rays incident on the wavelength selection elements 106 and 107 from the outside, a light beam having a specific wavelength transmitted by another wavelength selection element when propagating inside the module. Are emitted outside the module without being combined.
[0073]
In the above application example as a demultiplexer, part or all of the wavelength selection elements 106 and 107 can be replaced with a light quantity dividing element, and the number of light control elements is not limited.
[0074]
FIG. 2 is a detailed explanatory diagram of the first embodiment shown in FIG. 1, and shows a specific operation example and installation example of the wavelength selection elements 106 and 107. In the figure, light rays that are incident on the wavelength selection element, reflected, and transmitted are conceptually shown.
[0075]
A member indicated by reference numeral 2-1 is a wavelength selection element installed in a through hole formed in the array element mounting block. A member indicated by reference numeral 2-2 is a wavelength selection element attached to the surface of the optically transparent array element mounting block. Reference numeral 2-3 is a conceptual diagram in the case where a wavelength selection element in which a wavelength included in a transmitted light beam is changed by external control is formed in an array element mounting block. A member indicated by reference numeral 2-4 is a wavelength selection element that is installed in a through hole formed in the array element mounting block and is installed at an oblique angle with respect to the plane of the surface of the array element mounting block. Reference numeral 2-5 is a conceptual diagram in the case where a plurality of light rays are incident from the surfaces on both sides of the wavelength selection element installed in the through hole formed in the array element mounting block.
[0076]
In the above description, the portion where the wavelength selection element is formed can be replaced with a light quantity dividing element.
[0077]
In the case of reference numeral 2-2, since a plate-shaped wavelength selection element can be attached to the planar region of the array element mounting block, it is not necessary to form a complicated array element mounting surface, and the wavelength selection element is arrayed. Angular misalignment when forming the element mounting block can be greatly reduced, and the module manufacturing cost can be reduced.
Further, in the case of the form 2-3, a light beam having an arbitrary wavelength can be inserted into or extracted from an arbitrary port.
In the case of reference numeral 2-4, the degree of freedom in designing the optical axis of the propagating light beam inside the module can be improved.
Further, in the case of the reference numeral 2-5, it is possible to simultaneously mount a light input external light element and a light receiving external light element on one wavelength selection element.
[0078]
FIG. 3 is a detailed explanatory diagram of the first embodiment shown in FIG. 1, and shows a specific example in the case where light rays propagating inside the module are reflected on the surface of the array element mounting block. In the figure, incident and reflected light rays are conceptually shown.
[0079]
When optical reflection does not occur on the surface of the array element mounting block, it is necessary to form a reflection surface on the surface as necessary. Reference numeral 3-1 is a conceptual diagram in the case of reflecting a propagating light beam by forming a reflective film on the surface of the array element mounting block when the surface is flat. Reference numeral 3-2 is a conceptual diagram in the case of reflecting a propagating light beam by embedding a plane mirror or the like in the array element mounting block. Reference numeral 3-3 is a conceptual diagram in the case where a propagating light beam is reflected by attaching a flat plate mirror to the surface of the array element mounting block when the surface is flat.
[0080]
FIG. 4 is a detailed explanatory diagram of the first embodiment shown in FIG. 1 and shows a specific example in the case where light is transmitted in a specific region of the array element mounting block. In the figure, incident light rays are conceptually shown.
[0081]
Reference numeral 4-1 is a conceptual diagram in the case where a physical through hole is formed in the array element mounting block to transmit light. Reference numeral 4-2 is a conceptual diagram in a case where light is transmitted using an optically transparent array element mounting block.
[0082]
FIG. 5 is an application example of the first embodiment shown in FIG. 1, and a sawtooth-like structure is formed by forming a hollow structure with respect to the surface of the array element mounting block in a specific region of the array element mounting block. The example in the case of forming the surface is shown. In the figure, incident and reflected light rays are conceptually shown.
[0083]
Reference numeral 5-1 is a conceptual diagram in the case where one sawtooth structure is formed. Reference numeral 5-2 is a conceptual diagram when two sawtooth structures are formed adjacent to each other to form a mountain structure as a whole. Reference numeral 5-3 is a conceptual diagram when two sawtooth structures are formed adjacent to each other to form a valley structure as a whole.
In the case of forming a mountain-shaped structure or a valley-shaped structure, two light control elements can be formed in one step, so that the manufacturing cost can be reduced.
[0084]
FIG. 6 is an application example of the first embodiment shown in FIG. 1, and a sawtooth-like structure is formed by forming a protruding structure on the surface of the array element mounting block in a specific region of the array element mounting block. The example in the case of forming the surface is shown. In the figure, incident and reflected light rays are conceptually shown.
[0085]
Reference numeral 6-1 is a conceptual diagram when one sawtooth structure is formed. Reference numeral 6-2 is a conceptual diagram when two sawtooth structures are formed adjacent to each other to form a mountain structure as a whole. Reference numeral 6-3 is a conceptual diagram when two sawtooth structures are formed adjacent to each other to form a valley structure as a whole.
[0086]
In the case of forming a mountain-shaped structure or a valley-shaped structure, two light control elements can be formed in one step, so that the manufacturing cost can be reduced.
[0087]
FIG. 7 is an application example of the first embodiment shown in FIG. 1, and shows a specific example in which a plane mirror is formed obliquely and a sawtooth reflecting surface is formed in a specific region of the array element mounting block. An example is shown.
[0088]
Reference numeral 7-1 shows a specific example in which a sawtooth surface is formed by obliquely embedding a plane mirror on the surface of the array element mounting block.
Reference numeral 7-2 shows a specific example in the case where a sawtooth surface is formed by attaching a wedge-shaped plane mirror to the planar area of the surface of the array element mounting block.
[0089]
When a wedge-shaped flat mirror is attached, a manufacturing cost can be reduced because a flat array element mounting block can be used.
[0090]
FIG. 8 is an application example of the first embodiment shown in FIG. 1 and shows a specific example in the case where a light reflecting and condensing element is formed in a specific region of an array element mounting block. In the figure, incident and reflected light rays are conceptually shown.
[0091]
Reference numeral 8-1 is a conceptual diagram in the case where a reflective surface is formed on the surface of the array element mounting block and a convex lens-like structure is formed on the reflective surface with glass, transparent resin, transparent polymer or the like.
Reference numeral 8-2 is a conceptual diagram in the case where a minute protrusion structure applying the principle of the Fresnel lens is integrally formed on the surface of the array element mounting block, and a reflection surface is further formed on the surface.
Reference numeral 8-3 is a conceptual diagram when a concave mirror is formed by integrally forming a concave curved surface structure on the surface of the array element mounting block and further forming a reflective surface on the surface.
[0092]
9 (a) and 9 (b) are application examples of the first embodiment shown in FIG. 1, and in a specific region of the array element mounting block, a protrusion or a hollow structure is used to form a slope or a spherical surface. A specific example is shown in which a plurality of structures are integrally formed, and then a reflective film is formed on the surface with a metal or a multilayer film. If the smoothness and adhesion of the reflection film cannot be obtained, several types of films for improving the smoothness and adhesion can be formed under the reflection film. Of course, it is also possible to provide a plurality of functions with one kind of film.
[0093]
<Modification of the first embodiment>
FIG. 10 shows a light control module 100A according to a modification of the first embodiment shown in FIG. The array element mounting blocks 101 and 102 are supported by a holding structure 112 and arranged. A matching liquid 111 is filled in a portion between the array element mounting surface 101a and the array element mounting surface 102a. As the matching liquid 111, for example, a matching liquid having a refractive index comparable to that of the array element mounting blocks 101 and 102 and having a smaller propagation loss than the transparent resin is used. In this case, there is an effect of reducing a loss derived from the refractive index difference.
Instead of the matching liquid 111, various optically transparent waveguide members can be filled.
[0094]
<Second Embodiment>
FIG. 11 is a schematic configuration diagram of a light control module 1000 according to the second embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0095]
The member indicated by reference numeral 1001 is a first array element mounting block, the member indicated by reference numeral 1002 is a second array element mounting block, the members indicated by reference numerals 1003 and 1004 are light reflecting / condensing elements, and reference numeral 1005 , 1006, 1007 are wavelength selection elements.
[0096]
The optical design is such that the light beam propagating from the inside of the module is reflected from a certain light reflecting and condensing element so as to focus on the wavelength selection element that is incident immediately after reflection. By making the optical design of all the light reflecting and condensing elements 1003 and 1004 the same, it is possible to make the light beams incident so as to be focused on all the wavelength selecting elements 1005 to 1007.
[0097]
Particularly in the second embodiment, when the propagating light beam is a Gaussian beam, a beam waist can be formed in the wavelength selection elements 1005 to 1007, and the beam can be regarded as a substantially plane wave. Therefore, it is advantageous in terms of filter characteristics.
[0098]
<Third Embodiment>
FIG. 12 is a schematic configuration diagram of a light control module 1100 according to the third embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0099]
The members indicated by reference numerals 1101 and 1102 are array element mounting blocks, the members indicated by reference numerals 1103, 1104, and 1105 are light reflecting / condensing elements, the members indicated by reference numerals 1106 and 1107 are wavelength selection elements, and reference numeral 1108 is Reference numerals 1109 and 1110 denote optical transmission windows.
[0100]
The first array element mounting block 1101 is provided with a transmission window 1109 and a plurality of light reflecting and condensing elements 1103 to 1105 at equal intervals. The second array element mounting block 1102 includes a plane mirror 1108 and a plurality of The wavelength selection elements 1106 and 1107 and the transmission windows 1110 are arranged at equal intervals. The light reflecting / condensing elements 1103, 1104, and 1105 are concave mirrors integrally formed with the first array element mounting block 1101. The first array element mounting block 1101 and the second array element mounting block 1102 are opposed in parallel through a space.
[0101]
In the third embodiment, in particular, all the light reflecting / condensing elements 1103 to 1105 can be formed collectively and integrally in one array element mounting block 1101 by the configuration as described above. Cost can be reduced.
[0102]
<Fourth embodiment>
FIG. 13 is a schematic configuration diagram of a light control module 1300 according to the fourth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0103]
The members indicated by reference numerals 1301 and 1302 are array element mounting blocks, the members indicated by reference numerals 1303 to 1308 are light reflecting and condensing elements, the members indicated by reference numerals 1309 and 1310 are wavelength selection elements, and the reference numeral 1311 is an optical element. It is a transparent window.
[0104]
The first array element mounting block 1301 has a transmission window 1311, a wavelength selection element 1310, and a plurality of light reflecting and condensing elements 1304, 1305, 1308. , A wavelength selection element 1309 and a plurality of light reflecting and condensing elements 1303, 1306, and 1307 are installed at equal intervals. The light reflecting and condensing elements 1303 to 1308 are concave mirrors formed integrally with the first and second array element mounting blocks 1301 and 1302. The first array element mounting block 1301 and the second array element mounting block 1302 are opposed in parallel through a space.
[0105]
In the fourth embodiment, in particular, as described above, by forming the wavelength selection elements 1309 and 1310 in both the first array element mounting block 1301 and the second array element mounting block 1302, the external optical element Can be arranged on both sides of the module, so that the mounting space can be effectively used and the mounting flexibility can be improved.
[0106]
<Fifth embodiment>
FIG. 14 is a schematic configuration diagram of a light control module 1400 according to the fifth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0107]
The members indicated by reference numerals 1401 and 1402 are array element mounting blocks, the members indicated by reference numerals 1403 to 1406 are light reflecting and condensing elements, the members indicated by reference numerals 1407 and 1408 are wavelength selection elements, and reference numerals 1409 and 1410 are The member shown is a plane mirror, and reference numeral 1411 is an optical transmission window.
[0108]
The first array element mounting block 1401 is provided with a transmission window 1411 and a plurality of light reflecting and condensing elements 1403 to 1406, and the second array element mounting block 1402 includes a plurality of wavelength selection elements. 1407, 1408 and a plurality of plane mirrors 1409, 1410 are installed at equal intervals. The light reflecting / condensing elements 1403 to 1406 are concave mirrors formed integrally with the first array element mounting block 1401. The first array element mounting block 1401 and the second array element mounting block 1402 are opposed to each other in parallel through a space.
[0109]
In the fifth embodiment, in particular, the wavelength selection elements 1407 and 1408 and the plane mirrors 1409 and 1410 that are formed at equal intervals in the second array element mounting block 1402 are alternately installed, so that the external light element It is possible to double the installation interval of. In addition, it is possible to reduce the angle at which the light beam propagating through the module enters and reflects each light control element without increasing the installation interval of the external light elements.
[0110]
<Sixth and seventh embodiments>
FIGS. 15A and 15B are schematic configuration diagrams of light control modules 1500 and 1510 according to the sixth and seventh embodiments of the present invention, and are applied to the fifth embodiment shown in FIG. It is an example. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0111]
A light control module 1500 according to the sixth embodiment shown in FIG. 15A will be described below.
The members indicated by reference numerals 1501 and 1502 are array element mounting blocks, the members indicated by reference numerals 1503 to 1505 are light reflecting and condensing elements, and the members indicated by reference numerals 1506 and 1507 are wavelength selection elements.
[0112]
The first array element mounting block 1501 is provided with a plurality of light reflecting and condensing elements 1503 and 1505 at equal intervals, and the second array element mounting block 1502 includes a plurality of wavelength selection elements 1506 and 1507. Light reflection condensing elements 1504 are installed at equal intervals. The light reflecting / condensing elements 1503 to 1505 are concave mirrors formed integrally with the array element mounting blocks 1501 and 1502. The first array element mounting block 1501 and the second array element mounting block 1502 are opposed to each other in parallel through a space.
[0113]
A light control module 1510 according to the seventh embodiment shown in FIG. 15B will be described below.
The members indicated by reference numerals 1511 and 1512 are array element mounting blocks, the members indicated by reference numerals 1513 and 1514 are light reflecting / condensing elements, the members indicated by reference numerals 1515 and 1516 are wavelength selection elements, and the members indicated by reference numeral 1517. Is a plane mirror.
[0114]
The first array element mounting block 1511 is provided with light reflecting / condensing elements 1514 and flat mirrors 1517 at equal intervals, and the second array element mounting block 1512 includes a plurality of wavelength selection elements 1515, 1516, Light reflection condensing elements 1513 are provided at equal intervals. The light reflecting / condensing elements 1513 and 1514 and the plane mirror 1517 are integrally formed with the array element mounting blocks 1511 and 1512. The first array element mounting block 1511 and the second array element mounting block 1512 are opposed to each other in parallel through a space.
[0115]
In the sixth and seventh embodiments, in particular, as in the above two examples, both the first array element mounting blocks 1501 and 1511 and the second array element mounting blocks 1502 and 1512 have light reflecting and condensing elements. By forming 1503, 1504, 1505, 1513, and 1514, it is possible to focus on the position of the wavelength selection elements 1506, 1507, 1515, and 1516 by combining a plurality of light reflecting and condensing elements. It is possible to improve the optical design freedom of the beam propagating inside the module.
[0116]
<Eighth Embodiment>
FIG. 16 is a schematic configuration diagram of a light control module 1600 according to the eighth embodiment of the present invention, which is an application example of the light control module shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0117]
The members indicated by reference numerals 1601 and 1602 are array element mounting blocks, the members indicated by reference numerals 1603 to 1606 are light reflecting / condensing elements, the members indicated by reference numerals 1607 to 1610 are wavelength selection elements, and reference numerals 1611 and 1612 denote The member shown is a plane mirror, and the members indicated by reference numerals 1613 and 1614 are optical transmission windows.
[0118]
In the first array element mounting block 1601, a plurality of transmission windows 1613 and 1614 and a plurality of light reflecting and condensing elements 1603 to 1606 are installed at equal intervals. Flat mirrors 1611 and 1612 and a plurality of wavelength selection elements 1607 to 1610 are arranged at equal intervals. The first array element mounting block 1601 and the second array element mounting block 1602 are opposed to each other in parallel through a space.
[0119]
In the eighth embodiment, in particular, a plurality of light control modules are mounted on two array elements by periodically repeating the arrangement pattern of transmission windows and light control elements formed on each of the array element mounting blocks 1601 and 1602. Since the blocks can be collectively formed, the light control module can be integrated without significantly increasing the mounting cost and the mounting space.
[0120]
<Ninth embodiment>
FIG. 17 is a schematic configuration diagram of a light control module 1700 according to the ninth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0121]
The members denoted by reference numerals 1701 and 1702 are array element mounting blocks, the members denoted by reference numerals 1703 to 1707 are light reflecting and condensing elements, the members denoted by reference numerals 1708 to 1712 are wavelength selection elements, and the members denoted by reference numeral 1713 Is a plane mirror, and the member denoted by reference numeral 1714 is an optical transmission window.
[0122]
The first array element mounting block 1701 is provided with one transmission window 1714 and a plurality of light reflecting and condensing elements 1703 to 1707. The second array element mounting block 1702 has a plane mirror 1713. A plurality of wavelength selection elements 1708 to 1712 are installed at equal intervals. The first array element mounting block 1701 and the second array element mounting block 1702 are opposed to each other in parallel through a space.
[0123]
A light beam incident on the inside from the transmission window 1714 is demultiplexed by a plurality of wavelength selection elements 1708 and 1709 installed in a region close to the transmission window 1714 and emitted to the outside of the module, and a plurality of light beams installed in a region far from the transmission window 1714. The light rays incident on the inside from the wavelength selection elements 1711 and 1712 are combined inside the module and emitted from the transmission window 1714 to the outside.
[0124]
Between the wavelength selection elements 1708 and 1709 for performing the demultiplexing operation and the wavelength selection elements 1711 and 1712 for performing the multiplexing operation, a wavelength selection element 1710 for preventing the interference of the wavelength of the multiplexing and demultiplexing operation is disposed. In addition, a light beam having an unnecessary wavelength band in the multiplexing / demultiplexing operation can be emitted outside the module. It is also possible to exchange the arrangement positions of the wavelength selection element for performing the multiplexing operation and the wavelength selection element for performing the demultiplexing operation.
[0125]
The ninth embodiment
In particular, with the configuration as described above, it is possible to simultaneously realize both the multiplexing operation and the demultiplexing operation by one light control module having one common port.
[0126]
<Tenth Embodiment>
FIG. 18 is a schematic configuration diagram of a light control module 1800 according to the tenth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0127]
The members indicated by reference numerals 1801 and 1802 are array element mounting blocks, the members indicated by reference numerals 1803 to 1805 are light reflecting and condensing elements, the members indicated by reference numerals 1806 and 1807 are wavelength selection elements, and reference numerals 1808 and 1809 are The member shown is an optical transmission window.
[0128]
The first array element mounting block 1801 has a plurality of light reflecting and condensing elements 1803 to 1805 arranged at equal intervals, and the second array element mounting block 1802 has transmission windows 1808 and 1809 and a plurality of wavelengths. Selection elements 1806 and 1807 are installed at equal intervals. The light reflecting / condensing elements 1803 to 1805 are concave mirrors integrally formed with the first array element mounting block 1801. The first array element mounting block 1801 and the second array element mounting block 1802 are opposed to each other in parallel through a space.
[0129]
In the tenth embodiment, in particular, as described above, ports necessary for light input / output from / to the outside of the module, such as the transmission windows 1808 and 1809 and the wavelength selection elements 1806 and 1807, are provided in the second array element mounting block 1802. By forming only in this manner, it is possible to arrange the arrayed optical elements mounted outside the module or a block combining them on one side of the module, thereby reducing the mounting cost. Furthermore, in this case, it is possible to form the plurality of light reflecting / condensing condensing elements 1803 to 1805 only in the first array element mounting block 1801, and the manufacturing cost can be reduced.
[0130]
<Eleventh embodiment>
FIG. 19 is a schematic configuration diagram of a light control module 1900 according to the eleventh embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0131]
The members denoted by reference numerals 1901 and 1902 are array element mounting blocks, the members denoted by reference numerals 1903 to 1905 are plane mirrors, the members denoted by reference numerals 1906 and 1907 are wavelength selection elements, and the members denoted by reference numerals 1908 and 1909 are It is an optical transmission window.
[0132]
The first array element mounting block 1901 is provided with a plurality of plane mirrors 1903 to 1905 at equal intervals, and the second array element mounting block 1902 has transmission windows 1908 and 1909 and a plurality of wavelength selection elements 1906. , 1907 are installed at equal intervals. The first array element mounting block 1901 and the second array element mounting block 1902 are opposed to each other in parallel through a space.
[0133]
In the eleventh embodiment, in particular, as described above, a part of the element reflection surface such as the plane mirrors 1903 to 1905 is arranged at a position not included in the extension surface of the element reflection surface of another light control element. As a result, it is possible to partially change the optical path length of the light beam propagating through the module, or to partially change the arrangement interval of the transmission window and the wavelength selection element formed in the array element mounting block. In addition, the area | region which forms the said flat mirror and a light reflection condensing element may be the top face of a protruding structure instead of a hollow structure.
[0134]
<Twelfth embodiment>
FIG. 20 is a schematic configuration diagram of a light control module 2000 according to the twelfth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0135]
The members indicated by reference numerals 2001 and 2002 are array element mounting blocks, the members indicated by reference numerals 2003 to 2005 are light reflecting and condensing elements, the members indicated by reference numerals 2006 to 2008 are wavelength selection elements, and the members indicated by reference numeral 2009. Is an optical transmission window, a member indicated by reference numeral 2010 is a plane mirror formed on the inclined surface of the sawtooth structure, and a member indicated by reference numeral 2011 is a package wall surface when the light control module is mounted. A member indicated by 2012 is a holding structure.
[0136]
The first array element mounting block 2001 is provided with a plurality of light reflecting and condensing elements 2003 to 2005 and a plane mirror 2010 at equal intervals. The second array element mounting block 2002 includes a transmission window 2009 and a plurality of transmission windows 2009. Wavelength selection elements 2006 to 2008 are arranged at equal intervals. The light reflecting and condensing elements 2003 to 2005 are concave mirrors integrally formed with the first array element mounting block 2001. The first array element mounting block 2001 and the second array element mounting block 2002 are opposed in parallel through a space.
[0137]
The flat mirror 2010 formed on the inclined surface is formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission window 2009 is orthogonal to the surface of the array element mounting block, and is installed at the common port. Optical elements outside the module can be arranged perpendicular to the module surface.
[0138]
In the twelfth embodiment, in particular, with the configuration as described above, a space is provided on the side surface on the side where the common port of the present light control module is disposed and on the side surface on the array element mounting block side where the wavelength selection element is not formed. Therefore, when the light control module is mounted on a package, it can be mounted at a corner of the package and the mounting space can be used effectively.
[0139]
<Thirteenth embodiment>
FIG. 21 is a schematic configuration diagram of a light control module 2100 according to the thirteenth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0140]
The members indicated by reference numerals 2101 and 2102 are array element mounting blocks, the members indicated by reference numerals 2103 to 2105 are light reflecting / condensing elements, the members indicated by reference numerals 2106 and 2107 are wavelength selection elements, and the member indicated by reference numeral 2108. Is an optical transmission window, a member indicated by reference numeral 2109 is a plane mirror formed on the inclined surface of the sawtooth structure, and a member indicated by reference numeral 2110 is a package wall surface when the light control module is mounted. The members indicated by 2111 and 2112 are light emitting elements or light receiving elements, and the member indicated by reference numeral 2113 is a holding structure.
[0141]
The first array element mounting block 2101 is provided with a plurality of light reflecting / condensing elements 2103 to 2105 and transmission windows 2108 at equal intervals, and the second array element mounting block 2102 includes a plane mirror 2109 and a plurality of light transmission condensing elements. Wavelength selection elements 2106 and 2107 are arranged at equal intervals. The light reflecting / condensing elements 2103 to 2105 are concave mirrors integrally formed with the first array element mounting block 2101. Outside the second array element mounting block 2102, optical elements 2111 and 2112 are mounted for receiving or emitting light rays input / output from / to the wavelength selection element. The first array element mounting block 2101 and the second array element mounting block 2102 are opposed in parallel through a space.
[0142]
The flat mirror 2109 formed on the inclined surface is formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission window 2108 is orthogonal to the surface of the array element mounting block, and is installed at the common port. Optical elements outside the module can be arranged perpendicular to the module surface.
[0143]
In the thirteenth embodiment, in particular, with the above-described configuration, a space can be secured on the side surface on the side where the common port of the light control module is disposed. In addition, when the external optical element disposed on the side surface on the side of the array element mounting block on which the wavelength selection element is formed is an element for performing conversion with an electric signal such as a light emitting element or a light receiving element, an optical fiber or lens The required space can be reduced compared to the case where the system is implemented. Therefore, when the present light control module is mounted on a package, it can be mounted at the corner of the package and the mounting space can be used effectively.
[0144]
Further, the light reflecting and condensing elements 2103 to 2105 may be replaced with a plane mirror that is a simple reflecting surface.
[0145]
<Fourteenth embodiment>
FIG. 22 is a schematic configuration diagram of a light control module 2200 according to the fourteenth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0146]
The members indicated by reference numerals 2201 and 2202 are array element mounting blocks, the members indicated by reference numerals 2203 to 2206 are light reflecting and condensing elements, the members indicated by reference numerals 2207 to 2210 are wavelength selection elements, and reference numerals 2211 and 2122 are The member shown is an optical transmission window, the members indicated by reference numerals 2213 and 2214 are flat mirrors formed on the inclined surface of the sawtooth structure, and the member indicated by reference numeral 2215 is a package wall surface when the light control module is mounted. The members indicated by reference numerals 2216 and 2217 are light emitting elements or light receiving elements of the first group, and the members indicated by reference numerals 2218 and 2219 are light emitting elements or light receiving elements of the second group. The member shown is a holding structure.
[0147]
The first array element mounting block 2201 is provided with a plurality of light reflecting and condensing elements 2203 to 2206 and two transmission windows 2211 and 2122, and the second array element mounting block 2202 includes a plane mirror 2213, 2214 and a plurality of wavelength selection elements 2207 to 2210 are provided. The light reflecting / condensing elements 2203 to 2206 are concave mirrors integrally formed with the first array element mounting block 2201. Outside the second array element mounting block 2202, optical elements 2216 to 2219 for receiving or emitting light input / output from the wavelength selection element are mounted. The first array element mounting block 2201 and the second array element mounting block 2202 are opposed to each other in parallel through a space.
[0148]
The flat mirrors 2213 and 2214 formed on the inclined surface are formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission windows 2211 and 2122 is orthogonal to the surface of the array element mounting block. Optical elements outside the module installed in the port can be arranged perpendicular to the module surface.
[0149]
Consider a case where the first group of optical elements 2216 and 2217 are all light emitting elements, and the second group of optical elements 2218 and 2219 are all light receiving elements. A plurality of light beams emitted from the light emitting elements 2216 and 2217 enter the module, are combined when propagating through the module, and are emitted from the transmission window 2211 to the outside of the module. In addition, a light beam incident from the outside of the module through the transmission window 2212 is demultiplexed when propagating inside the module, is emitted to the outside from the wavelength selection elements 2209 and 2210, and enters the light receiving elements 2218 and 2219.
[0150]
In the fourteenth embodiment, in particular, with the configuration as described above, it is possible to simultaneously realize both multiplexing and demultiplexing operations by one light control module having two common ports. In addition, it is possible to integrate an optical transmitter and an optical receiver compatible with wavelength multiplexing communication.
[0151]
Further, the light reflecting and condensing elements 2103 to 2106 may be replaced with a plane mirror.
[0152]
<Fifteenth embodiment>
FIG. 23 is a schematic configuration diagram of a light control module 2300 according to the fifteenth embodiment of the present invention, which is an application example of the fourteenth embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0153]
The members indicated by reference numerals 2301 and 2302 are array element mounting blocks, the members indicated by reference numerals 2303 to 2305 are light reflecting and condensing elements, the members indicated by reference numerals 2306 to 2310 are wavelength selection elements, and reference numerals 2311 and 2312 are The member shown is an optical transmission window, the members indicated by reference numerals 2313 and 2314 are flat mirrors formed on the inclined surface of the sawtooth structure, and the member indicated by reference numeral 2315 is a package wall surface when the light control module is mounted. The members indicated by reference numerals 2316 and 2317 are light emitting elements or light receiving elements of the first group, and the members indicated by reference numerals 2318 to 2320 are light emitting elements or light receiving elements of the second group. The member shown is a holding structure.
[0154]
The first array element mounting block 2301 is provided with a plurality of wavelength selection elements 2306 to 2310 and two transmission windows 2311 and 312, and the second array element mounting block 2302 includes plane mirrors 2313 and 2314, and A plurality of light reflecting and condensing elements 2303 to 2305 are provided. The light reflecting and condensing elements 2303 to 2305 are concave mirrors integrally formed with the second array element mounting block 2302. Outside the first array element mounting block 2301, optical elements 2316 to 2320 for receiving or emitting light rays input / output from / to the wavelength selection element are mounted. The first array element mounting block 2301 and the second array element mounting block 2302 are opposed in parallel through a space.
[0155]
The flat mirrors 2313 and 2314 formed on the inclined surface are formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission windows 2311 and 312, is orthogonal to the surface of the array element mounting block. Optical elements outside the module installed in the port can be arranged perpendicular to the module surface.
[0156]
Consider a case where the first group of optical elements 2316 and 2317 are all light emitting elements, and the second group of optical elements 2318 to 2320 are all light receiving elements. A plurality of light beams emitted from the light emitting elements 2316 and 2317 enter the module, are combined when propagating through the module, and are emitted from the transmission window 2311 to the outside of the module. In addition, light rays that are incident from the outside of the module through the transmission window 2312 are demultiplexed when propagating inside the module, are emitted to the outside from the wavelength selection elements 2308 to 2310, and are incident on the light receiving elements 2318 to 2320.
[0157]
In the fifteenth embodiment, in particular, with the configuration as described above, it is possible to simultaneously realize both multiplexing and demultiplexing operations by one light control module having two common ports. In addition, it is possible to integrate an optical transmitter and an optical receiver compatible with wavelength multiplexing communication.
[0158]
Also, in this case, by forming ports necessary for light input / output to / from the outside of the module only in the first array element mounting block 2301, an array of optical elements to be mounted outside the module or a block combining them can be obtained. The module can be disposed on one side surface of the module, and the mounting cost can be reduced. Further, since the light reflecting and condensing elements 2303 to 2305 and the plane mirrors 2313 and 2314 are formed in one array element mounting block 2302, these light control elements can be formed integrally and collectively. The manufacturing cost can be reduced.
[0159]
In the above example, all of the optical elements 2316 to 2320 are light receiving elements or light emitting elements, but all or a part of them may be a module in which an optical fiber and a coupling lens system are combined.
[0160]
<Sixteenth Embodiment>
FIG. 24 is a schematic configuration diagram of a light control module 2400 according to the sixteenth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0161]
The members indicated by reference numerals 2401 and 2402 are array element mounting blocks, the members indicated by reference numerals 2403 to 2407 are light reflecting and condensing elements, the members indicated by reference numerals 2408 to 2411 are wavelength selection elements, and the members indicated by reference numeral 2412 Is the first optical transmission window, the member indicated by reference numeral 2413 is the second optical transmission window, and the members indicated by reference numerals 2414 and 2415 are plane mirrors formed on the slopes of the sawtooth structure. The member indicated by reference numeral 2416 is a holding structure.
[0162]
The first array element mounting block 2401 is provided with a plurality of light reflecting and condensing elements 2403 to 2407 and two transmission windows 2412 and 2413 at equal intervals, and the second array element mounting block 2402 has two Two plane mirrors 2414 and 2415 and a plurality of wavelength selection elements 2408 to 2411 are installed at equal intervals. The light reflecting / condensing elements 2403 to 2407 are concave mirrors integrally formed with the first array element mounting block 2401. The first array element mounting block 2401 and the second array element mounting block 2402 are opposed to each other in parallel through a space.
[0163]
The flat mirrors 2414 and 2415 formed on the slope are formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission windows 2412 and 2413 is orthogonal to the surface of the array element mounting block. Optical elements outside the module installed in the port can be arranged perpendicular to the module surface.
[0164]
Light rays that enter the module from the outside through the first transmission window 2412 are demultiplexed when propagating through the module, and are output to the outside from the wavelength selection elements 2408 to 2411. The light beam including the wavelength reflected by all the wavelength selection elements is reflected by the plane mirror 2415 and emitted as one light beam outside the module by the second transmission window 2413. This light beam can be coupled to an optical fiber by an optical coupling lens system or the like and reused as an optical signal transmitted from the light control module.
[0165]
In the sixteenth embodiment, in particular, with the configuration as described above, both the incident optical axis that is input from the transmission window 2412 to the inside of the module and the output optical axis that is output from the transmission window 2413 to the outside of the module are array elements. Since it can be installed perpendicular to the surface of the mounting block, it is possible to secure a space on both side surfaces on the side where the common port of the present light control module is disposed. Therefore, when mounting the light control module on a package, the mounting space can be used effectively.
In addition, since the multi-port multi-wavelength optical add / drop multiplexer apparatus having only the function of demultiplexing can be realized by one main optical control module, the manufacturing cost and the apparatus size can be greatly reduced.
[0166]
Also, when converting the light emitted from the wavelength selection elements 2408 to 2411 to an electrical signal by an array-shaped light receiving element mounted outside, the light is coupled to an arrayed optical fiber or lens system. Since the optical system can be simplified compared to the above, the space required for mounting can be reduced. Therefore, when the present light control module is mounted on a package, it can be mounted at the corner of the package and the mounting space can be used effectively.
[0167]
Further, even when the light beams emitted from the wavelength selection elements 2408 to 2411 are not converted into electric signals, and the light beams are coupled to an arrayed optical fiber or a lens system, their light emission axes are parallel to each other. The angles formed by the outgoing optical axis and the surface of the array element mounting block are all the same. Therefore, as in the eighth embodiment shown in FIG. 16, even when a plurality of light control modules are collectively formed in a set of array element mounting blocks, there is a possibility that a plurality of input / output optical axes will collide. Can be eliminated.
[0168]
<Seventeenth embodiment>
FIG. 25 is a schematic configuration diagram of a light control module 2500 according to the seventeenth embodiment of the present invention, which is an application example of the first and sixteenth embodiments shown in FIG. 1 and FIG. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0169]
The members indicated by reference numerals 2501 and 2502 are array element mounting blocks, the members indicated by reference numerals 2503 to 2507 are light reflecting and condensing elements, the members indicated by reference numerals 2508 to 2511 are wavelength selection elements, and the members indicated by reference numeral 2512. Is the first optical transmission window, the member indicated by reference numeral 2513 is the second optical transmission window, and the members indicated by reference numerals 2514 and 2515 are plane mirrors formed on the inclined surface of the sawtooth structure. The member indicated by reference numeral 2516 is a holding structure.
[0170]
The first array element mounting block 2501 is provided with a plurality of light reflecting and condensing elements 2503 to 2507 and two transmission windows 2512 and 2513 at equal intervals, and the second array element mounting block 2502 has two Two plane mirrors 2514 and 2515 and a plurality of wavelength selection elements 2508 to 2511 are installed at equal intervals. The light reflecting / condensing elements 2503 to 2507 are concave mirrors integrally formed with the first array element mounting block 2501. The first array element mounting block 2501 and the second array element mounting block 2502 are opposed to each other in parallel through a space.
[0171]
The flat mirrors 2514 and 2515 formed on the inclined surface are formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission windows 2512 and 2513 is orthogonal to the surface of the array element mounting block. Optical elements outside the module installed in the port can be arranged perpendicular to the module surface.
[0172]
Consider a case in which the first group 2508, 2509 is used for the multiplexing operation and the second group 2510, 2511 is used for the demultiplexing operation among the plurality of wavelength selection elements.
[0173]
Light rays that enter the module from the outside through the first transmission window 2512 are demultiplexed when propagating inside the module, and are emitted to the outside from the second group of wavelength selection elements 2510 and 2511. A light beam including a wavelength reflected by all the wavelength selection elements 2508 to 2511 is reflected by the plane mirror 2515 and emitted as a single light beam to the outside of the module by the second transmission window 2513. A plurality of light beams transmitted through the first group of wavelength selection elements 2508 and 2509 and incident on the inside of the module are combined when propagating inside the module, reflected by the plane mirror 2515, and the second transmission window 2513. Is emitted as one light beam outside the module.
[0174]
Of the wavelength selection elements formed in the second array element mounting block 2502, positions where the first group of wavelength selection elements 2508 and 2509 used for the multiplexing operation are formed are used for the demultiplexing operation. When compared with the position where the second group of wavelength selection elements 2510 and 2511 is formed, the light beam is formed in a region close to the first transmission window 2512 that guides an external light beam for demultiplexing operation to the inside of the module. Thus, it is possible to prevent collision of optical axes input / output from the wavelength selection element by the multiplexing / demultiplexing operation.
[0175]
In the seventeenth embodiment, in particular, with the configuration as described above, a multi-port multi-wavelength optical add / drop multiplexer device can be realized with a single optical control module, so that the manufacturing cost and device size can be greatly reduced. .
[0176]
<Eighteenth embodiment>
FIG. 26 is a schematic configuration diagram of a light control module 2600 according to the eighteenth embodiment of the present invention, and shows the first embodiment shown in FIG. 1 and the seventeenth embodiment shown in FIG. This is an application example. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0177]
The members indicated by reference numerals 2601 and 2602 are array element mounting blocks, the members indicated by reference numerals 2603 and 2604 are flat mirrors, the members indicated by reference numerals 2605 and 2606 are wavelength selection elements, and the members indicated by reference numerals 2607 are light receiving elements. The member indicated by reference numeral 2608 is a light emitting element.
[0178]
The first array element mounting block 2601 is provided with a plurality of plane mirrors 2603 and 2604 at equal intervals, and the second array element mounting block 2602 is provided with a plurality of wavelength selection elements 2605 and 2606 at equal intervals. is set up. The first array element mounting block 2601 and the second array element mounting block 2602 are opposed in parallel through a space.
[0179]
Regarding the plurality of wavelength selection elements 2605 and 2606, wavelength selection elements 2606 used for multiplexing operation and wavelength selection elements 2605 used for demultiplexing operation are alternately installed. A light receiving element 2607 is mounted outside the wavelength selection element 2605 used for the demultiplexing operation, and a light emitting element 2608 is mounted outside the wavelength selection element 2606 used for the multiplexing operation.
[0180]
In the eighteenth embodiment, a transmitter / receiver can be configured outside the module by combining the light emitting element 2608 and the light receiving element 2607, and a plurality of transmitters / receivers can be installed in the module. Yes, it can be attached or removed as needed.
[0181]
<Nineteenth embodiment>
FIG. 27 is a schematic configuration diagram of a light control module 2700 according to the nineteenth embodiment of the present invention, which is an application example of the first and seventeenth embodiments shown in FIGS. In the figure, light rays that propagate inside the module and are emitted to the outside of the module are conceptually shown.
[0182]
The members indicated by reference numerals 2701 and 2702 are array element mounting blocks, the members indicated by reference numerals 2703 to 2706 are light reflecting and condensing elements, the members indicated by reference numerals 2707 to 2711 are wavelength selection elements, and the members indicated by reference numeral 2712. Is the first optical transmission window, the member indicated by reference numeral 2713 is the second optical transmission window, and the members indicated by reference numerals 2714 and 2715 are plane mirrors formed on the inclined surface of the sawtooth structure. A member indicated by reference numeral 2716 is a holding structure.
[0183]
In the first array element mounting block 2701, a plurality of light reflecting and condensing elements 2703 and 2704 and wavelength selection elements 2709 to 2711 are installed at equal intervals, and two transmission windows 2712 and 2713 are installed. In the second array element mounting block 2702, two plane mirrors 2714 and 2715 are installed, and a plurality of wavelength selection elements 2707 and 2708 and light reflection condensing elements 2705 and 2706 are installed at equal intervals. The light reflecting / condensing elements 2703 to 2706 are concave mirrors formed integrally with the array element mounting blocks 2701 and 2702. The first array element mounting block 2701 and the second array element mounting block 2702 are opposed in parallel through a space.
[0184]
The plane mirrors 2714 and 2715 formed on the inclined surface are formed at an angle such that the optical axis of the light beam input / output inside the module through the transmission windows 2712 and 2713 is orthogonal to the surface of the array element mounting block. Optical elements outside the module installed in the port can be arranged perpendicular to the module surface.
[0185]
Consider a case in which the first groups 2709 to 2711 are used for the multiplexing operation and the second groups 2707 and 2708 are used for the demultiplexing operation among the plurality of wavelength selection elements.
[0186]
Light rays incident on the inside of the module through the first transmission window 2712 are demultiplexed when propagating inside the module, and are emitted to the outside from the second group of wavelength selection elements 2707 and 2708. The light beam including the wavelength reflected by all the wavelength selection elements 2707 to 2711 is reflected by the plane mirror 2715 and emitted as a single light beam to the outside of the module by the second transmission window 2713. A plurality of light beams transmitted through the first group of wavelength selection elements 2709 to 2711 and incident on the inside of the module are combined when propagating through the inside of the module, reflected by the plane mirror 2715, and the second transmission window 2713. Is emitted as one light beam outside the module.
[0187]
The positions of the optical axes of the light beams input and output from the first group of wavelength selection elements 2709 to 2711 and the positions of the optical axes of the light beams input and output from the second group of wavelength selection elements 2707 and 2708 are respectively transmitted. It is desirable to install it at a position where it does not collide with the optical axis of the light beam input / output from the windows 2712 and 2713.
[0188]
In the nineteenth embodiment, in particular, the wavelength selection elements 2707 and 2708 formed in the second array element mounting block 2702 are all used for the demultiplexing operation by the configuration as described above, and the first array element mounting is performed. All of the wavelength selection elements 2709 to 2711 formed in the block 2701 can be used for the multiplexing operation.
[0189]
Therefore, it is possible to prevent collision of optical axes input and output from the wavelength selection element by the multiplexing / demultiplexing operation, and the first group of wavelength selection elements 2707 and 2708 and the second group of wavelength selection elements 2709 to 2711. It is possible to select the type and mounting method of the external optical element that is optimal for each of the above.
[0190]
<20th Embodiment>
FIG. 28 is a schematic configuration diagram of a light control module 2800 according to the twentieth embodiment of the present invention, which is an application example of the first embodiment shown in FIG. In the figure, light rays input / output outside the module are conceptually shown.
[0191]
The members indicated by reference numerals 2801 and 2802 are array element mounting blocks in which light control elements, transmission windows, and the like are formed. The member indicated by reference numeral 2803 is a holding member for making a plurality of array element mounting blocks face each other through a space. Structure.
[0192]
In the twentieth embodiment, particularly when both the first array element mounting block 2801 and the second array element mounting block 2802 have a flat plate structure, the shape of the holding structure 2803 can be simplified. Manufacturing cost can be reduced.
[0193]
<Twenty-first embodiment>
FIG. 29 is a detailed explanatory diagram of the twentieth embodiment and the twentieth embodiment shown in FIG.
A member indicated by reference numeral 2901 is an array element mounting block, a member indicated by reference numeral 2902 is a part of a holding structure for opposing a plurality of array element mounting blocks in space, and a member indicated by reference numeral 2903 is a holding member. It is a protruding structure formed in a part of the structure with high positional accuracy.
[0194]
With the above configuration, when the plurality of array element mounting blocks are opposed to each other in the space, the gap can be easily and accurately positioned, and the mounting cost and the manufacturing cost can be reduced.
[0195]
<Twenty-second embodiment>
FIG. 30 is a schematic configuration diagram of a light control module 3000 according to the twenty-second embodiment of the present invention, which is an application example of the twentieth embodiment shown in FIG. In the figure, light rays input / output outside the module are conceptually shown.
[0196]
A member indicated by reference numeral 3001 is a waveguide block in which a holding structure for opposing a plurality of array element mounting blocks in space and a first array element mounting block are integrally formed. A second array element mounting block in which a plurality of light control elements, transmission windows, and the like are formed, and members denoted by reference numerals 3003 to 3005 are light reflecting and condensing elements integrally formed with the waveguide block 3001.
[0197]
In addition to the light reflecting / condensing element, the waveguide block 3001 can have a complicated structure such as a slope, a depression, a protrusion, or a curved surface. Further, a physical through hole can be formed so that a light beam can enter the module from the waveguide block 3001.
[0198]
In the above example, the first array element mounting block and the holding structure for making the array element mounting block face each other in space are integrally formed. However, the second array element mounting block and the array element mounting block The holding structure for making it oppose in space may be integrally formed.
[0199]
In the twenty-second embodiment, the gap between two array element mounting blocks can be accurately positioned only by placing the array element mounting block 3002 on the waveguide block 3001 with the above configuration. This is possible, and the alignment cost can be reduced, so that the manufacturing cost can be reduced.
[0200]
<Twenty-third Embodiment>
FIG. 31 is a schematic configuration diagram of a light control module 3100 according to the twenty-third embodiment of the present invention, which is an application example of the twenty-second embodiment shown in FIG. In the figure, light rays input / output outside the module are conceptually shown.
[0201]
A member indicated by reference numeral 3101 is a waveguide block in which a holding structure for opposing a plurality of array element mounting blocks in space and a first array element mounting block are integrally formed, and a member indicated by reference numeral 3102 is A second array element mounting block in which a plurality of light control elements, transmission windows, and the like are formed, and members denoted by reference numerals 3103 to 3106 are optical fibers or the like mounted outside the second array element mounting block 3102 An electrically conductive wiring, a lens system, a light receiving element, a light emitting element, and a cylindrical module characterized by combining them. A member indicated by reference numeral 3107 is provided outside the second array element mounting block 3102. External module support structure for positioning and fixing the installation position and installation angle of cylindrical modules 3103 to 3106 to be mounted A. A member indicated by reference numerals 3108 to 3110 is a light reflecting / condensing element integrally formed with the waveguide block 3101.
[0202]
In the waveguide block 3101, a step-like structure for accurately positioning the relative installation position of the second array element mounting block 3102 and the external element support structure 3107 is formed. Since each of the waveguide block 3101 and the external module support structure 3107 has a different shape, size, and accuracy required for processing and molding, an optimum material selected from materials such as resin, metal, and silicon is manufactured. It is desirable.
[0203]
In the twenty-third embodiment, the plane mirror and light control element formed in the first array element mounting block, and the plane mirror and light control element formed in the second array element mounting block, in particular, with the above configuration. With respect to a plurality of cylindrical modules mounted outside the second array element mounting block, it is possible to easily and accurately position the relative installation positions and installation angles of these components, thereby reducing the mounting cost. It is possible to reduce.
[0204]
<Twenty-fourth embodiment>
FIG. 32 is a detailed explanatory diagram of the twenty-third embodiment shown in FIG.
Reference numeral 3201 denotes a holding structure for making a plurality of array element mounting blocks face each other in a space and a part of a waveguide block in which the first array element mounting block is integrally formed. A part of the array element mounting block, reference numeral 3203 denotes an external module support structure for positioning and fixing the installation position and installation angle of the cylindrical module mounted outside the second array element mounting block. Reference numeral 3204 denotes a protruding structure formed on a part of the waveguide block 3201 with high positional accuracy.
[0205]
With the above configuration, the relative installation positions of these components can be easily and accurately positioned with respect to the waveguide block 3201, the second array element mounting block 3202, and the external module support structure 3203. Costs can be reduced.
[0206]
<Twenty-fifth embodiment>
FIG. 33 is a detailed explanatory diagram of the twenty-second embodiment shown in FIG.
When manufacturing a waveguide block 3001a in which a plurality of array element mounting blocks are opposed to each other in a space and a first array element mounting block are integrally formed, a light control element formed in the array element mounting block The case where the side wall perpendicular | vertical with respect to this reflective surface is formed in three surfaces can be considered.
[0207]
With the above configuration, the depth of the waveguide block can be reduced by one side wall while maintaining the strength of the waveguide block. Further, since the surface area of the array element mounting surface can be ensured, the smoothness and flatness of the surface of the array element mounting surface when manufacturing the array element mounting block can be improved.
[0208]
<Twenty-sixth embodiment>
FIG. 34 is a detailed explanatory diagram of the twenty-second embodiment shown in FIG.
When manufacturing a waveguide block 3001b in which a plurality of array element mounting blocks are opposed to each other in space and a waveguide block 3001b in which the first array element mounting block is integrally formed, a light control element formed in the array element mounting block The case where the side wall perpendicular | vertical with respect to this reflective surface is formed in four surfaces can be considered.
[0209]
With the configuration as described above, it is possible to seal the gap between the two array element mounting blocks, so that foreign matter can be prevented from entering from the outside of the light control module. In some cases, the gap between the two array element mounting blocks can be filled with a medium other than air or can be in a vacuum state.
[0210]
<Twenty-seventh embodiment>
FIG. 35 is a detailed explanatory diagram of the twenty-second embodiment shown in FIG.
When manufacturing a waveguide block 3001c in which a plurality of array element mounting blocks are opposed to each other in a space and a first array element mounting block are integrally formed, a light control element formed in the array element mounting block The case where the side wall perpendicular | vertical with respect to this reflective surface is formed in two surfaces which oppose is considered.
[0211]
With the above configuration, the depth of the waveguide block can be reduced by two side walls, and the light control module can be miniaturized while ensuring the surface area of the array element mounting surface.
[0212]
<Twenty-eighth embodiment>
36 (a) and 36 (b) are other examples of the application examples shown in FIGS.
36A shows a case where the element reflection surface is formed as a hollow structure of the array element mounting block, and FIG. 36B shows a case where the element reflection surface is formed as a protrusion structure of the array element mounting block. It is a conceptual diagram.
[0213]
When the plane including the optical axis of the light beam propagating inside the module is defined as the propagation plane, the array element is configured such that the propagating light beam is incident on the slope of the sawtooth and the reflected optical axis of the reflected light beam is perpendicular to the propagation plane. A slope structure is formed on the surface of the mounting block.
[0214]
With the configuration as described above, it is possible to design the optical axis of the reflected light so as to be parallel to the surface of the array element mounting block, and the arrangement of external optical elements corresponding to the common port of the light control module is free. The degree can be greatly improved.
[0215]
<Twenty-ninth embodiment>
FIG. 37 is another example of the application example indicated by reference numeral 8-3 in FIG. 8, and is a conceptual diagram in the case where the light reflecting and condensing element integrally formed with the array element mounting block 3701 is a spherical concave mirror. .
[0216]
In the case where the light reflecting / condensing element integrally formed with the array element mounting block 3701 is a spherical concave mirror, if the light beam enters the center of the spherical mirror, the incident light is incident on the surface (plane) of the array element mounting block 3701. The incident angle of the light beam 3702 and the reflection angle of the reflected light beam are the same.
[0217]
Here, when the incident light beam is translated and incident at a position shifted from the center of the spherical mirror, the incident angle of the incident light beam 3703 and reflection of the reflected light beam are reflected on the surface (plane) of the array element mounting block. The angles do not coincide, and the optical axis of the reflected light and the surface (plane) of the array element mounting block can be made orthogonal by design.
[0218]
<Thirty Embodiment>
FIG. 38 is a schematic configuration diagram of a light control module according to the thirtieth embodiment of the present invention. In the figure, light rays input / output outside the module are conceptually shown.
[0219]
The members indicated by reference numerals 3901 and 3902 are array element mounting blocks, the members indicated by reference numerals 3903, 3904, and 3905 are light reflecting / condensing elements, the members indicated by reference numerals 3906 and 3907 are wavelength selection elements, and reference numeral 3908 is Reference numerals 3909 and 3910 are optical transmission windows.
[0220]
In the first array element mounting block 3901, a transmission window 3909 and a plurality of light reflecting and condensing elements 3903 to 3905 are installed at equal intervals. The wavelength selection elements 3906 and 3907 and the transmission windows 3910 are arranged at equal intervals. The light reflecting / condensing elements 3903, 3904, 3905 are concave mirrors integrally formed with the first array element mounting block 3901.
[0221]
The first array element mounting block 3901 and the second array element mounting block 3902 are opposed to each other in the space, and the light incident from the optical transmission window 3909 enters the first array element mounting block 3901. When reflected, the optical axis of the reflected light beam is designed to be orthogonal to the second array element mounting block 3902.
[0222]
In the thirtieth embodiment, in particular, with the above-described configuration, the optical axis of the array element mounting surface and the external optical element outside the module are orthogonal to each other without forming the light reflecting / condensing element on the sawtooth slope. The installation angle of the optical axis of the external optical element can be simplified and the mounting cost can be reduced.
[0223]
Further, the light reflecting / condensing elements 3903, 3904, and 3905 may be replaced with flat mirrors. In that case, the manufacturing cost of the array element mounting block can be reduced.
[0224]
<Thirty-first embodiment>
FIG. 39 is a schematic configuration diagram of a light control module 4000 according to the thirty-first embodiment of the present invention. In the figure, light rays input / output outside the module are conceptually shown.
[0225]
The members indicated by reference numerals 4001 and 4002 are array element mounting blocks, the members indicated by reference numerals 4003, 4004, and 4005 are light reflecting / condensing elements, the members indicated by reference numerals 4006 to 4008 are wavelength selection elements, and reference numeral 4009 is It is an optical transmission window.
[0226]
The first array element mounting block 4001 is provided with a transmission window 4009 and a plurality of light reflecting and condensing elements 4003 to 4005, and the second array element mounting block 4002 has a plurality of wavelength selection elements 4006 to 4008. Are installed at equal intervals. The light reflecting and condensing elements 4003, 4004, and 4005 are concave mirrors that are integrally formed with the first array element mounting block 4001. The second array element mounting block 4002 is a flat structure manufactured of an optically transparent material, and flat wavelength selection elements 4006 to 4008 are attached to the surface thereof.
[0227]
The first array element mounting block 4001 and the second array element mounting block 4002 are opposed to each other in the space, and the light incident from the optical transmission window 4009 enters the first array element mounting block 4001. When reflected, the optical axis of the reflected light beam is designed to be orthogonal to the first array element mounting block 4001.
[0228]
In the thirty-first embodiment, in particular, with the configuration as described above, the optical axis of the external optical element outside the module corresponding to the array element mounting surface and the common port is orthogonal, and the installation angle of the optical axis of the external optical element is In the case of simplifying and reducing the mounting cost, it is not necessary to form the wavelength selection element on the sawtooth slope. Therefore, the module manufacturing cost can be reduced.
[0229]
Further, the light reflecting / condensing elements 4003 to 4005 may be replaced with a plane mirror formed on a slope. In that case, the manufacturing cost of the array element mounting block can be reduced.
[0230]
<Thirty-second embodiment>
FIG. 40 is a schematic configuration diagram of a light control module 4100 according to the thirty-second embodiment of the invention. In the figure, light rays input / output outside the module are conceptually shown.
[0231]
The members indicated by reference numerals 4101 and 4102 are array element mounting blocks, the members indicated by reference numerals 4103, 4104 and 4105 are light reflecting / condensing elements, the members indicated by reference numerals 4106 and 4107 are wavelength selection elements, and reference numeral 4108 is Reference numerals 4109 and 4110 denote optical transmission windows.
[0232]
In the first array element mounting block 4101, a transmission window 4109 and a plurality of light reflecting and condensing elements 4103 to 4105 are installed at equal intervals. In the second array element mounting block 4102, a plane mirror 4108, a plurality of The wavelength selection elements 4106 and 4107 and the transmission windows 4110 are arranged at equal intervals. The light reflecting / condensing elements 4103, 4104, and 4105 are concave mirrors integrally formed with the first array element mounting block 4101. The first array element mounting block 4101 and the second array element mounting block 4102 are opposed in parallel through a space.
[0233]
The plane mirror 4108, the light reflecting and condensing elements 4103 to 4105, and the wavelength selecting elements 4106 and 4107 are formed in a sawtooth shape on the array element mounting surface. In addition, both the incident optical axis and the reflected optical axis that enter and reflect the array element mounting blocks 4101 and 4102 are designed so that the angle formed with the array element mounting surface is smaller than 90 degrees.
[0234]
In the thirty-second embodiment, in particular, the wavelength selection elements 4106 and 4107 are maintained while maintaining the arrangement interval of the wavelength selection elements 4106 and 4107 formed in the second array element mounting block 4102 with the above-described configuration. In addition, it is possible to reduce the incident angle of the light rays that enter and reflect the light reflecting / condensing elements 4103 to 4105. Therefore, it is possible to improve the filter characteristics of the transmitted light of the wavelength selection elements 4106 and 4107 and reduce the coma aberration of the light reflection condensing elements 4103 to 4105.
[0235]
Further, the light reflecting and condensing elements 4103 to 4105 may be replaced with a plane mirror formed on a slope. In that case, the manufacturing cost of the array element mounting block can be reduced.
[0236]
<Thirty-third embodiment>
FIG. 41 is a schematic configuration diagram of a light control module according to the thirty-third embodiment of the present invention. In the figure, light rays input / output outside the module are conceptually shown.
[0237]
The members indicated by reference numerals 4201 and 4202 are array element mounting blocks, the members indicated by reference numerals 4203 and 4204 are planar mirrors having a mountain structure, the members indicated by reference numerals 4205 and 4206 are wavelength selection elements, and reference numerals 4207 to 4209. Is a light reflection condensing element.
[0238]
The first array element mounting block 4201 is provided with mountain-shaped planar mirrors 4203 and 4204 at equal intervals, and the second array element mounting block 4202 includes a plurality of wavelength selection elements 4205 and 4206 and light. The reflective condensing elements 4207 to 4209 are alternately arranged at equal intervals. The light reflecting / condensing elements 4207, 4208, and 4209 are concave mirrors integrally formed with the second array element mounting block 4202. The first array element mounting block 4201 and the second array element mounting block 4202 are opposed to each other in parallel through a space.
[0239]
The light beam reflected from the light reflecting / condensing element 4207 formed on the second array element mounting block 4202 is incident on the first inclined surface of the flat mirror 4203 having a mountain structure formed on the first array element mounting block 4201. Incident light is incident on a wavelength selection element 4205 formed in the second array element mounting block 4202. The light beam reflected from the wavelength selection element 4205 is incident on the second inclined surface of the flat mirror 4203 having a mountain structure, and is incident on another light reflecting / condensing element 4208 formed in the second array element mounting block 4202. . The above operation is repeated, and the light beam propagates inside the light control module. At that time, when the propagating light is incident on and reflected from the array element mounting surface, the incident angle of the light incident on the wavelength selecting element is small, and the incident angle of the light incident on the light reflecting condensing element is large. Propagate while alternately modulating the angle.
[0240]
In the thirty-third embodiment, in particular, with the above-described configuration, the wavelength selection element 4205 is increased while increasing the arrangement interval of the external optical elements that receive the light beams emitted from the wavelength selection elements 4205 and 4206 to the outside of the module. , 4206 can reduce the incident angle of the light rays entering and reflected.
[0241]
Moreover, since the planar mirrors 4203 and 4204 having a mountain structure include two element reflection points and an element reflection surface, many light control elements can be formed at once and with high accuracy. Therefore, while improving the filter characteristics of the transmitted light of the wavelength selection elements 4205 and 4206, the degree of freedom of arrangement of the external optical elements can be greatly improved, and the module manufacturing cost can be reduced.
[0242]
Further, the light reflecting / condensing elements 4207 to 4209 may be replaced with a plane mirror. In that case, the manufacturing cost of the array element mounting block can be reduced.
[0243]
【The invention's effect】
As described above, according to the light control module of the present invention, a module having a plurality of optical transmission paths (ports) has a specific wavelength or a specific light amount by a method of multiple reflection of propagating light rays inside the module. It is possible to solve a problem that occurs when a light beam is extracted or inserted into a plurality of optical transmission lines,
1) Reduction of module manufacturing costs
2) Reduction of propagation loss
3) Reduction of reflection loss
4) Increased pitch between ports
5) Reduction in mounting costs for optical components outside the module placed at each port
6) Improving the degree of freedom in placing optical components outside the module placed at each port
7) Broadening the wavelength band of propagating light inside the module
8) Improvement of the degree of freedom in designing the optical axis of the propagating light beam inside the module
9) Improvement of filter characteristics
Etc. can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a light control module according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a specific operation example and installation example of the wavelength selection element used in the first embodiment shown in FIG. 1;
FIG. 3 is an explanatory diagram showing a specific example in the case where a light beam propagating through the module of the first embodiment shown in FIG. 1 is reflected on the surface of the array element mounting block;
4 is an explanatory diagram showing a specific example in the case where light is transmitted through a specific region of the array element mounting block according to the first embodiment shown in FIG. 1; FIG.
FIG. 5 is an application example of the first embodiment shown in FIG. 1, and a sawtooth-like structure is formed in a specific region of the array element mounting block with respect to the surface of the array element mounting block. It is explanatory drawing which shows the specific example in the case of forming the surface.
FIG. 6 is an application example of the first embodiment shown in FIG. 1, and a sawtooth-like structure is formed in a specific region of the array element mounting block by forming a protruding structure with respect to the surface of the array element mounting block; It is explanatory drawing which shows the specific example in the case of forming the surface.
FIG. 7 is an application example of the first embodiment shown in FIG. 1, and is a specific example in the case where a plane mirror is formed obliquely and a sawtooth reflecting surface is formed in a specific region of an array element mounting block. It is explanatory drawing which shows an example.
8 is an application example of the first embodiment shown in FIG. 1, and is an explanatory view showing a specific example in the case of forming a light reflecting and condensing element in a specific region of an array element mounting block. FIG.
FIG. 9 is an application example of the first embodiment shown in FIG. 1, and a plurality of structures such as slopes and spherical surfaces are used in a specific region of the array element mounting block using protrusions or depressions. It is explanatory drawing which shows the specific example in the case of forming integrally and then forming a reflective film on the surface by a metal or a multilayer film.
FIG. 10 is a schematic configuration diagram showing a modification of the light control module according to the first embodiment of the present invention.
FIG. 11 is a schematic configuration diagram showing a light control module according to a second embodiment of the present invention.
FIG. 12 is a schematic configuration diagram showing a light control module according to a third embodiment of the present invention.
FIG. 13 is a schematic configuration diagram showing a light control module according to a fourth embodiment of the present invention.
FIG. 14 is a schematic configuration diagram showing a light control module according to a fifth embodiment of the present invention.
FIGS. 15A and 15B are schematic configuration diagrams showing light control modules according to sixth and seventh embodiments of the present invention, in which FIG. 15A is a sixth embodiment and FIG. 15B is a seventh embodiment; Is shown.
FIG. 16 is a schematic configuration diagram showing a light control module according to an eighth embodiment of the present invention.
FIG. 17 is a schematic configuration diagram showing a light control module according to a ninth embodiment of the present invention.
FIG. 18 is a schematic configuration diagram showing a light control module according to a tenth embodiment of the present invention.
FIG. 19 is a schematic configuration diagram showing a light control module according to an eleventh embodiment of the present invention.
FIG. 20 is a schematic configuration diagram showing a light control module according to a twelfth embodiment of the present invention.
FIG. 21 is a schematic configuration diagram showing a light control module according to a thirteenth embodiment of the present invention.
FIG. 22 is a schematic configuration diagram showing a light control module according to a fourteenth embodiment of the present invention.
FIG. 23 is a schematic configuration diagram showing a light control module according to a fifteenth embodiment of the present invention.
FIG. 24 is a schematic configuration diagram showing a light control module according to a sixteenth embodiment of the present invention.
FIG. 25 is a schematic configuration diagram showing a light control module according to a seventeenth embodiment of the present invention.
FIG. 26 is a schematic configuration diagram showing a light control module according to an eighteenth embodiment of the present invention.
FIG. 27 is a schematic configuration diagram showing a light control module according to a nineteenth embodiment of the present invention.
FIG. 28 is a schematic configuration diagram showing a light control module according to a twentieth embodiment of the present invention.
FIG. 29 is an explanatory diagram showing a twenty-first embodiment which is a detailed part of the twentieth embodiment.
FIG. 30 is a schematic configuration diagram showing a light control module according to a twenty-second embodiment of the present invention.
FIG. 31 is a schematic configuration diagram showing a light control module according to a twenty-third embodiment of the present invention.
FIG. 32 is an explanatory diagram showing a twenty-fourth embodiment which is a detailed part of the twenty-third embodiment.
FIG. 33 is an explanatory diagram showing a twenty-fifth embodiment which is a detailed part of the twenty-second embodiment;
FIG. 34 is an explanatory diagram showing a twenty-sixth embodiment which is a detailed part of the twenty-second embodiment;
FIG. 35 is an explanatory diagram showing a twenty-seventh embodiment which is a detailed part of the twenty-second embodiment;
FIG. 36 is an explanatory diagram showing a twenty-eighth embodiment of the present invention.
FIG. 37 is a conceptual diagram showing a twenty-ninth embodiment in which the light reflecting / condensing element integrally formed with the array element mounting block is a spherical concave mirror;
FIG. 38 is a schematic configuration diagram showing a light control module according to a thirtieth embodiment of the present invention.
FIG. 39 is a schematic configuration diagram showing a light control module according to a thirty-first embodiment of the present invention.
FIG. 40 is a schematic configuration diagram showing a light control module according to a thirty-second embodiment of the present invention.
FIG. 41 is a schematic configuration diagram showing a light control module according to a thirty-third embodiment of the present invention.
FIG. 42 is a block diagram showing a first conventional technique.
FIG. 43 is a block diagram showing a second conventional technique.
FIG. 44 is a block diagram showing a third conventional technique.
[Explanation of symbols]
100, 100A, 1000, 1100, 1300, 1400, 1500, 1510, 1600, 1700, 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700, 2800, 3000, 3100, 3900, 4000, 4100, 4200 Light control module
101,102,1001,1002,1101,1102,1301,1302,1401,1402,1501,1502,1511,1512,1601,1602,1701,1702,1801,1802,1901,1902,2000,2001,2002 2101, 2102, 2201, 2022, 2301, 2302, 2401, 402, 2501, 502, 2601, 2602, 2701, 2702, 2801, 2802, 2901, 3002, 3102, 3202, 3701, 3901, 3902, 4001, 4002, 4101, 4102, 4201, 4202 Array element mounting block
101a, 102a Array element mounting surface
103, 104, 105, 1003, 1004, 1103, 1104, 1105, 1303, 1304, 1305, 1306, 1307, 1308, 1403, 1405, 1406, 1503, 1504, 1505, 1513, 1514, 1603, 1604, 1605 1606, 1703, 1704, 1705, 1705, 1707, 1803, 1804, 1805, 2003, 2004, 2005, 2103, 2104, 2105, 2203, 2204, 2205, 2206, 2303, 2304, 2305, 2403, 2404, 2405 2406, 2407, 2503, 2504, 2505, 2506, 2507, 2703, 2704, 2705, 2706, 3003, 3004, 3005, 3108, 3109, 3110, 3 03,3904,3905,4003,4004,4005,4103,4104,4105,4207,4208,4209 light-reflecting light-collecting device
106, 107, 1005, 1006, 1007, 1106, 1107, 1309, 1310, 1407, 1408, 1506, 1507, 1515, 1516, 1607, 1608, 1609, 1610, 1708, 1709, 1710, 1711, 1712, 1806 1807, 1906, 1907, 2006, 2007, 2008, 2106, 2107, 2207, 2208, 2209, 2210, 2306, 2307, 2308, 2309, 2310, 2408, 2409, 2410, 2411, 2508, 2509, 2510, 2511, 2605, 2606, 2707, 2708, 2709, 2710, 2711, 3906, 3907, 4006, 4007, 4008, 4106, 4107, 4205, 4206
108, 1108, 1409, 1410, 1517, 1611, 1612, 1713, 1903, 1904, 1905, 2010, 2109, 2213, 2214, 2313, 2314, 2414, 2415, 2514, 2515, 2603, 2604, 2714, 2715, 3908, 4108, 4203, 4204 plane mirror
109, 110, 1109, 1110, 1311, 1411, 1613, 1614, 1714, 1808, 1809, 1908, 1909, 2009, 2108, 2211, 2122, 2311, 2312, 2412, 2413, 2512, 2513, 2712, 2713, 3909, 3910, 4009, 41094110 Transmission window
2011, 2110, 2215, 2315 package wall surface
2111, 2112, 2216, 2217, 2218, 2219, 2316, 2317, 2318, 2319, 2320, 2607, 2608 Light emitting element or light receiving element
112, 2012, 2113, 2220, 231, 2416, 2516, 2716, 2803, 2902
2903, 3204 Protrusion structure
3001, 3101, 3201, 3001a, 3001b, 3001c Waveguide block
3103, 3104, 3105, 3106 Tubular module
3107, 3203 External module support structure
3702, 3703 Incident light

Claims (10)

It has a plurality of beam branching elements that transmit a part of incident light and reflect the rest,
Having at least one transmission window for inputting and outputting propagating light between the outside and inside of the light control module;
The light beam splitting element and the transmission window are formed on an array element mounting surface which is a predetermined surface of the array element mounting block,
A light control module in which a reflection surface for reflecting incident light is formed on a part of the array element mounting surface,
A plurality of array element mounting blocks are arranged by a holding structure so that the two array element mounting surfaces are spaced apart from each other,
The internal propagating light beam is alternately reflected by the reflecting surface of the first array element mounting block and the second array element mounting block or the beam branching element alternately, and along the zigzag optical path between the opposing array element mounting surfaces. An optical control module characterized in that an arrangement position / angle of each array element mounting block and an arrangement position / angle of each beam splitter and reflecting surface are set so as to propagate. In claim 1,
A first virtual plane including a plurality of contacts between the holding structure and the first array element mounting block;
The light control module, wherein a second virtual plane including a plurality of contacts between the holding structure and the second array element mounting block is parallel. In claim 1 or claim 2,
The light control module, wherein the reflective surface of the array element mounting surface is formed integrally with the array element mounting block. In any one of Claims 1 to 3,
The light control module, wherein the holding structure is integrally formed with at least one array element mounting block. In any one of Claims 1 thru | or 4,
The light beam splitting element transmits a light beam having a specific wavelength among incident light beams and reflects a light beam having a wavelength other than that, or transmits a light beam having a specific light amount among incident light beams and transmits a light beam having the remaining light amount. A light control module that is a light quantity dividing element that reflects light. In any one of Claims 1 thru | or 5,
A part of the reflection surface of the array element mounting surface is a flat surface. In any one of Claims 1 thru | or 6,
A part of the reflective surface of the array element mounting surface has a sawtooth shape. In any one of Claims 1 thru | or 7,
A part of the reflective surface of the array element mounting surface is a concave surface. In claim 8,
A part of the reflection surface of the array element mounting surface is a spherical surface. In any one of Claims 1 thru | or 9,
The portion between the array element mounting surface of the first array element mounting block and the array element mounting surface of the second array element mounting block is filled with an optically transparent waveguide member. Light control module.

Images