CN113376765B - System and method for multipath parallel receiving optical device - Google Patents
System and method for multipath parallel receiving optical device Download PDFInfo
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- CN113376765B CN113376765B CN202110548886.3A CN202110548886A CN113376765B CN 113376765 B CN113376765 B CN 113376765B CN 202110548886 A CN202110548886 A CN 202110548886A CN 113376765 B CN113376765 B CN 113376765B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
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Abstract
The invention discloses a system and a method for receiving a light device in a multipath and parallel mode, which belong to the technical field of optical fiber communication and comprise a light splitting component and lens groups with the same quantity as N paths of incident light, wherein the light splitting component is configured to split the received incident light with M wavelengths into N paths of incident light and split each path of incident light into a plurality of wavelengths, M is a positive integer, N is a positive integer, and N is smaller than M; the lens groups are configured to receive the plurality of wavelengths from the light splitting assembly, each group of the lens groups is distributed towards a vertical direction relative to a substrate, and each group of the lens groups refracts a corresponding path of the plurality of wavelengths towards a direction close to the substrate. The invention can increase the number of channels in a smaller limited space of the optical module and provide a larger transmission bandwidth.
Description
Technical Field
The invention belongs to the technical field of optical fiber communication, and particularly relates to a system and a method for a multi-path parallel receiving optical device.
Background
With the increasing demand of people for search services and video services, global digitization is rapidly developing, and rapid development of processing, storing and transmitting big data is stimulated. And the processing, storage and transmission of big data need to be realized by a supercomputer and a storage-based data center. The data transmission of the data center is realized by adopting 40G/100G/200G/400G/800G or even higher speed optical modules as core components. As data centers have developed, the capacity requirements for data transmission have become higher and higher, and the demand for optical modules with smaller size, lower cost and larger transmission capacity has become more apparent.
Currently, in the existing optical fiber communication technology, a high-speed optical module used for data center transmission increases the capacity of data transmission by increasing the transmission rate of a single channel. However, since the transmission rate of a single channel is limited by the bandwidth of the chip itself, under the condition of utilizing the chip bandwidth to the maximum extent, the number of channels needs to be increased if the capacity of the module is to be increased, however, the increase of the number of channels in the parallel receiving optical device may cause a plurality of optical ports to increase the packaging volume, which is not favorable for packaging the high-speed optical module. Therefore, the number of channels is difficult to increase in the small limited space of the optical module, and a larger transmission bandwidth cannot be provided.
As described above, in the conventional optical fiber communication technology, it is difficult to increase the number of channels in a limited space where an optical module is small, and a larger transmission bandwidth cannot be provided.
Disclosure of Invention
The invention aims to solve the technical problems that the number of channels is difficult to increase in a small limited space of an optical module, and a larger transmission bandwidth cannot be provided.
In order to solve the above technical problem, the present invention provides a system for multiple parallel receiving optical devices, the system comprising: a splitting component configured to split received incident light of M wavelengths into N incident lights and to split each incident light into a plurality of wavelengths, M being a positive integer, N being less than M; the lens groups are configured to receive the plurality of wavelengths from the light splitting component, each group of the lens groups is distributed towards the vertical direction relative to a substrate, and each group of the lens groups refracts a corresponding path of the plurality of wavelengths towards the direction close to the substrate.
Further, the light splitting assembly includes: an optical splitter configured to split received incident light of M wavelengths into N incident lights; and N optical demultiplexers having the same number of incident light beams, each of the optical demultiplexers being coupled to the substrate, each of the optical demultiplexers being configured to receive a corresponding one of the incident light beams from the optical splitter, wherein the optical demultiplexers divide the corresponding one of the incident light beams into a plurality of wavelengths.
Further, each of the optical demultiplexers is distributed toward a vertical direction with respect to the substrate.
Further, the lens group is provided with a reflection surface and a spherical lens group with the same number as the N incident lights, each spherical lens group is configured to receive the plurality of wavelengths from the light splitting mechanism, and the reflection surface is configured to refract the plurality of wavelengths in a direction approaching the substrate.
Further, the spherical transparent surface groups with the same quantity of incident light in the path N equal to 2,2 include a first spherical transparent surface group and a second spherical transparent surface group, the first spherical transparent surface group and the second spherical transparent surface group are sequentially distributed in the vertical direction close to the substrate, the first spherical transparent surface group is provided with first spherical transparent surfaces with the same quantity as the plurality of corresponding wavelengths, the second spherical transparent surface group is provided with second spherical transparent surfaces with the same quantity as the plurality of corresponding wavelengths, the curvature radius of each first spherical transparent surface is the same, and the curvature radius of each second spherical transparent surface is the same.
Further, the radius of curvature of the first spherical lens surface is greater than the curvature of the second spherical lens surface.
Further, the radius of curvature of the first spherical lens surface is smaller than the curvature of the second spherical lens surface.
Further, an array of photoelectric converters configured to receive the plurality of wavelengths after refraction.
Further, the photoelectric converter array converts the received plurality of refracted wavelengths into an electrical signal; the system also includes a transimpedance amplifier array coupled to the substrate that amplifies electrical signals from the array of optoelectronic transducers.
According to another aspect of the present invention, the received incident light with M wavelengths is divided into N incident lights by the light splitting component, and each incident light is divided into a plurality of wavelengths, where M is a positive integer, N is a positive integer, and N is smaller than M; receiving the plurality of wavelengths from the light splitting assembly through a lens group, wherein the lens group refracts the plurality of wavelengths towards the substrate.
Has the advantages that:
the invention provides a system for a multi-path parallel receiving optical device, which is configured to divide received incident light with M wavelengths into N paths of incident light through an optical splitting component, and divide each path of incident light into a plurality of wavelengths, wherein M is a positive integer, N is a positive integer, and N is smaller than M. And the lens groups are configured to receive the plurality of wavelengths from the light splitting component, each group of lens groups is distributed towards the vertical direction relative to the substrate, and each group of lens groups refracts one or more corresponding wavelengths towards the direction close to the substrate. Thus, after the incident light with the M wavelengths is divided into N paths of incident light in the process of passing through the light splitting assembly, the incident light is refracted in the lens group, so that the number of channels can be increased without increasing the number of optical ports, the number of channels can be increased in a smaller limited space of the optical module, and a larger transmission bandwidth is provided. Therefore, the technical effects that the number of channels can be increased in a small limited space of the optical module and a larger transmission bandwidth can be provided are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a first schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention;
fig. 2 is a second schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention;
fig. 3 is a third schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention;
fig. 4 is a fourth schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a lens assembly in a system for multiple parallel light-receiving devices according to an embodiment of the present invention;
fig. 6 is a fifth schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for a multiple parallel receiving optical device according to an embodiment of the present invention.
Detailed Description
The invention discloses a system for a multipath parallel receiving optical device, which is configured to divide received incident light with M wavelengths into N paths of incident light through an optical splitting component, and divide each path of incident light into a plurality of wavelengths, wherein M is a positive integer, N is a positive integer, and N is smaller than M. And the lens groups 4 are configured to receive the plurality of wavelengths from the light splitting assembly, each group of lens groups 4 being distributed towards a vertical direction with respect to the substrate 2, wherein each group of lens groups 4 refracts a corresponding one of the plurality of wavelengths towards a direction approaching the substrate 2. Thus, after the incident light with the M wavelengths is divided into N paths of incident light in the process of passing through the light splitting assembly, the incident light is refracted in the lens group, so that the number of channels can be increased without increasing the number of optical ports, the number of channels can be increased in a smaller limited space of the optical module, and a larger transmission bandwidth is provided. Therefore, the technical effects that the number of channels can be increased in a small limited space of the optical module and a larger transmission bandwidth can be provided are achieved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by one skilled in the art based on the embodiments of the present invention, belong to the protection scope of the present invention; the "and/or" keyword referred to in this embodiment represents sum or two cases, in other words, a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, representing: only A does not include B; only B does not include A; including A and B.
Also, in embodiments of the invention where an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected/coupled" to another element, it can be directly connected/coupled to the other element or intervening elements may also be present. The term "connected/coupled" as used herein may include electrical and/or mechanical physical connections/couplings. The term "comprises/comprising" as used herein refers to the presence of features, steps or elements, but does not preclude the presence or addition of one or more other features, steps or elements. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "vertical," "horizontal," "up," "down," and the like as used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.
Example one
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, fig. 1 is a first schematic diagram of a system for a multi-path parallel receiving optical device according to an embodiment of the present invention; fig. 2 is a second schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention; fig. 3 is a third schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention; fig. 4 is a fourth schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention; fig. 5 is a schematic diagram of a lens group 4 in a system for multiple parallel light receiving devices according to an embodiment of the present invention;
fig. 6 is a fifth schematic diagram of a system for multiple parallel receiving optical devices according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for a multiple parallel receiving optical device according to an embodiment of the present invention. The system for receiving a multipath parallel light device provided by the embodiment of the present invention comprises a light splitting component and lens groups with the same number as that of the N paths of incident light, and the following detailed description is respectively performed on the light splitting component and the lens groups 4 with the same number as that of the N paths of incident light:
for the light splitting assembly:
the optical splitting assembly comprises an optical splitter 1, an optical demultiplexer 3 with the same number of N incident lights, and an optical splitting assembly configured to split the received M wavelengths of incident lights into N incident lights and split each incident light into a plurality of wavelengths, M being a positive integer, N being a positive integer, and N being smaller than M. The optical splitter 1 is configured to split the received incident light of M wavelengths into N incident lights, N being a positive integer, N being smaller than M. The beam splitter 1 may be a beam splitter prism. Each optical demultiplexer 3 of the same number of N optical demultiplexers 3 (i.e., DEMUX) is coupled to the substrate 2, and each optical demultiplexer 3 is configured to receive a corresponding one of the incident light from the optical splitter 1, wherein the optical demultiplexer 3 separates the corresponding one of the incident light into a plurality of wavelengths, and each optical demultiplexer 3 is disposed toward a direction perpendicular to the substrate 2.
Specifically, the beam splitter prism is a transparent object surrounded by planes which intersect each other two by two but are not parallel to each other, and can split or disperse a light beam. The beam splitting prism can be passively fixed on the substrate 2 by using glue. In the present invention, M wavelengths are preferably 8 wavelengths, and N incident lights are preferably 2 incident lights, i.e., M =8, as shown in 2,2, incident lights may refer to incident light located in an upper path and incident light located in a lower path, respectively. Each of the 8 wavelengths may be different from each other. After the incident lights with the 8 wavelengths which are combined together are emitted into the light splitting prism, the light with the 8 wavelengths which are combined together can be divided into two paths of incident lights of an upper path and a lower path through the light splitting prism. The upper and lower incident lights from the beam splitting prism are incident on the corresponding optical demultiplexer 3 described below, so as to provide the optical demultiplexer 3 described below with incident light that can be divided into a plurality of wavelengths. As shown in fig. 2, for example, the upstream incident light from the splitting prism may be incident on one optical demultiplexer 3 located upstream, and the downstream incident light from the splitting prism may be incident on one optical demultiplexer 3 located downstream.
Meanwhile, continuing to take the example that the M wavelengths are 8 wavelengths and the N incident lights are 2 incident lights, the N incident lights may refer to the incident light on the upper path and the incident light on the lower path. In this case, the first optical demultiplexer 3 corresponds to the upper incident light, and after the upper incident light from the optical splitter 1 enters the first optical demultiplexer 3, the light divided into 4 wavelengths by the first optical demultiplexer 3 enters the group of spherical transparent surfaces 41 in the lens group 4 (hereinafter, referred to as the first incident light). The second optical demultiplexer 3 corresponds to the next incident light, and after the next incident light from the optical splitter 1 enters the second optical demultiplexer 3, the light divided into 4 wavelengths by the second optical demultiplexer 3 enters the group of spherical transparent surfaces 41 in the lens group 4 (hereinafter referred to as the second incident light). The first optical demultiplexer 3 and the second optical demultiplexer 3 may be passively fixed on the support by making a support on the substrate 2 and then using glue. The 4 wavelengths of light in the first incident light may be parallel to each other and located in the same plane. The 4 wavelengths of light in the second path of incident light may also be parallel to each other and located in the same plane. The first optical demultiplexer 3 is mounted on the second optical demultiplexer 3, the second optical demultiplexer 3 is mounted on the substrate 2, and the second optical demultiplexer 3 is located between the first optical demultiplexer 3 and the substrate 2, that is, the first optical demultiplexer 3 and the second optical demultiplexer 3 are disposed along a vertical direction relative to the substrate 2, so that the first path of incident light and the second path of incident light are also distributed in the vertical direction relative to the substrate 2, and then the first path of incident light and the second path of incident light can be incident into the lens group 4 in the vertical direction as described below.
For the substrate 2:
the substrate 2 is a ceramic circuit board or a metal circuit board.
Specifically, the substrate 2 may be a ceramic circuit board, or the substrate 2 may be a metal circuit board. The ceramic circuit board is a circuit board manufactured by using heat-conducting ceramic powder and an organic binder, and the metal circuit board is a circuit board manufactured by using metal materials such as copper. The substrate 2 may be provided with a first side surface and a second side surface which are both upper and lower side surfaces of the substrate 2, and a space for accommodating the optical splitter 1, the substrate 2 described below, the optical demultiplexer 3 described below, the lens group 4 described below, and the photoelectric converter array 5 described below is provided on the first side surface of the substrate 2, and the optical splitter 1, the substrate 2, the optical demultiplexer 3, the lens group 4, and the photoelectric converter array 5 may be mounted on the first side surface of the substrate 2, respectively.
For the lens group 4:
the lens groups 4 are configured to receive the plurality of wavelengths from the light splitting assembly, and each group of lens groups 4 is distributed towards a vertical direction relative to the substrate 2, wherein each group of lens groups 4 refracts a corresponding one of the plurality of wavelengths towards a direction close to the substrate 2. The lens assembly 4 may be configured to receive the plurality of wavelengths from the optical demultiplexer 3 by coupling the lens assembly 4 to the substrate 2, wherein the lens assembly 4 refracts the plurality of wavelengths toward the substrate 2. The lens group 4 is provided with a reflective surface 42 and groups of spherical transparent surfaces 41 having the same number of N incident lights, each group of spherical transparent surfaces 41 being configured to receive the plurality of wavelengths from the optical demultiplexer 3, the reflective surface 42 being configured to refract the plurality of wavelengths toward the substrate 2. Each set of spherical transparent surfaces 41 is provided with the same number of spherical transparent surfaces 41 as the corresponding plurality of wavelengths, each spherical transparent surface 41 being configured to receive a corresponding one of the wavelengths. The surface of the reflecting surface 42 is coated with a total reflection film, and the total reflection film can enable the reflecting surface 42 to have high reflectivity; the surface of the spherical transmitting surface 41 is coated with an antireflection film, which can reduce or eliminate the reflected light from optical surfaces such as lenses, prisms, mirrors, etc., thereby increasing the light transmission of these elements and reducing or eliminating the stray light of the system.
Specifically, the lens group 4 may be fixed to the substrate 2 by glue, and the lens group 4 may be an integrally molded lens or a combination of two lens groups 4. The lens group 4 includes two effective surfaces of a reflection surface 42 and a spherical lens surface 41, the spherical lens surface 41 is used for converging the first path of incident light and the second path of incident light, 2 groups of spherical lens surfaces 41 can be distributed on the spherical lens surface 41, the 2 groups of spherical lens surfaces 41 are parallel to each other in the vertical direction relative to the substrate 2, a group of spherical lens surfaces 41 above is referred to as a first group of spherical lens surfaces, a group of spherical lens surfaces 41 below is referred to as a second group of spherical lens surfaces, the first group of spherical lens surfaces includes 4 spherical lens surfaces 41, the second group of spherical lens surfaces also includes 4 spherical lens surfaces 41, namely, 8 channels for light transmission are formed in the lens group 4 at the moment. The curvature radius of the spherical transparent surface 41 can be adjusted according to actual needs, so as to form different lens focal length systems to match the optical path design of the whole optical path. Since the surface of the spherical transparent surface 41 is coated with an antireflection film, the light with 4 wavelengths in the first path of incident light can be incident into the 4 spherical transparent surfaces 41 in the first group of spherical transparent surface groups respectively, and the light with each wavelength is incident onto the reflective surface 42 in the lens group 4 after being converged by the spherical transparent surfaces 41. Since the surface of the reflecting surface 42 is coated with the total reflection film, after the light with 4 wavelengths in the first path of incident light enters the reflecting surface 42, the light with 4 wavelengths horizontally entering through the total reflection film is turned by 90 degrees and enters the photoelectric converter array 5. The light with 4 wavelengths in the second incident light can be incident on the 4 spherical transparent surfaces 41 in the second group of spherical transparent surfaces, and the light with each wavelength is incident on the reflecting surface 42 in the lens group 4 after being converged by the spherical transparent surfaces 41. Since the surface of the reflecting surface 42 is coated with the total reflection film, after the light with 4 wavelengths in the second path of incident light enters the reflecting surface 42, the horizontally entered light with 4 wavelengths is turned by 90 ° through the total reflection film and is also incident on the photoelectric converter array 5.
It should be noted that, when N is equal to 2, the first path of incident light is incident to a first spherical lens group, the second path of incident light is incident to a second spherical lens group, the first spherical lens group and the second spherical lens group are sequentially distributed in a vertical direction close to the substrate, the first spherical lens group is provided with first spherical lenses having the same number as the corresponding plurality of wavelengths, the second spherical lens group is provided with second spherical lenses having the same number as the corresponding plurality of wavelengths, the radius of curvature of each first spherical lens is the same, and the radius of curvature of each second spherical lens is the same. Assuming that the curvature radius of the first spherical transparent surface is a, and the curvature radius of the second spherical transparent surface is B, the first embodiment is that the curvature radius of the first spherical transparent surface is greater than the curvature of the second spherical transparent surface, that is, when a is greater than B, a distance between the first path of incident light after being refracted and the second path of incident light after being refracted is smaller, and the smaller distance makes a distance between the first photoelectric converter receiving the refracted first path of incident light and the second photoelectric converter receiving the refracted second path of incident light smaller, so that the positions of the first photoelectric converter and the second photoelectric converter on the substrate 2 are more compact, which is beneficial to reducing the occupied space of the first photoelectric converter and the second photoelectric converter, and can save the packaging space.
Meanwhile, in the second embodiment, the curvature radius of the first spherical transparent surface is smaller than that of the second spherical transparent surface, that is, when a is smaller than B, the distance between the first path of incident light after refraction and the second path of incident light after refraction is larger, and the larger distance makes the distance between the first photoelectric converter receiving the first path of incident light after refraction and the second photoelectric converter receiving the second path of incident light after refraction larger, so that a larger spatial position between the first photoelectric converter and the second photoelectric converter on the substrate 2 is realized, which is beneficial to heat exchange between the first photoelectric converter and the second photoelectric converter and the outside air, and rapid discharge of heat generated by the first photoelectric converter and the second photoelectric converter is realized, thereby avoiding heat accumulation from being detrimental to normal operation of the first photoelectric converter and the second photoelectric converter. Then, the positions of the first photoelectric converter and the second photoelectric converter can be flexibly adjusted through the first implementation mode and the second implementation mode, and the technical effect of packaging the optical module is more facilitated.
For the photoelectric converter array 5:
a photoelectric converter array 5 (i.e., a PD array) is coupled to the substrate 2, the photoelectric converter array 5 being configured to receive the refracted plurality of wavelengths. The photoelectric converter array 5 converts the received refracted plurality of wavelengths into an electrical signal. In order to amplify the electrical signal converted in the photoelectric converter array 5, the system for the multiple parallel receiving optical devices according to the embodiment of the present invention may further include a transimpedance amplifier array 6 (i.e., TIA), where the transimpedance amplifier array 6 is coupled to the substrate 2, and the transimpedance amplifier array 6 amplifies the electrical signal from the photoelectric converter array 5.
Specifically, the photoelectric converter array 5 may be attached to the substrate 2, and the photoelectric converter array 5 may include a first photoelectric converter and a second photoelectric converter, both of which are mounted on the substrate 2, the first photoelectric converter and the second photoelectric converter being arranged in parallel with each other, and the first photoelectric converter and the second photoelectric converter being located between the lens group 4 and the substrate 2. In this way, the light with 4 wavelengths in the first path of incident light refracted by the total reflection film on the reflection surface 42 is incident into the first photoelectric converter, and the light with 4 wavelengths in the first path of incident light is subjected to photoelectric conversion by the first photoelectric converter, that is, the received optical signal is converted into an electrical signal. Meanwhile, the light with 4 wavelengths in the second path of incident light refracted by the total reflection film on the reflection surface 42 is incident into the second photoelectric converter, and the light with 4 wavelengths in the second path of incident light is subjected to photoelectric conversion by the second photoelectric converter, that is, the received optical signal is converted into an electrical signal.
As shown in fig. 1, the transimpedance amplifier array 6 includes two transimpedance amplifiers, the two transimpedance amplifiers can be respectively installed on two sides of the first photoelectric converter and the second photoelectric converter, the transimpedance amplifier array 6 on the left side can be connected to the first photoelectric converter, and after the first photoelectric converter converts an optical signal into an electrical signal, the electrical signal in the first photoelectric converter is amplified and shaped by the transimpedance amplifier array 6 for output. The transimpedance amplifier on the right side can be connected with the second photoelectric converter, and after the second photoelectric converter converts the optical signal into the electric signal, the electric signal in the second photoelectric converter is amplified and shaped through the transimpedance amplifier for output. Thus, only one optical port is needed to realize that incident light with multiple wavelengths can be divided into multiple paths of incident light in the vertical direction after sequentially passing through the optical splitter 1 and the optical demultiplexer 3, the multiple paths of incident light in the vertical direction can enter the photoelectric converter array 5 after being converged and refracted in the process of passing through the lens group 4, received optical signals are converted into electric signals through the photoelectric converter array 5, and the converted electric signals are amplified and shaped through the transimpedance amplifier array 6. And then, by the design of the laminated optical path system, the limited space can be better utilized, and the number of channels can be increased by utilizing the longitudinal space, so that the effect of increasing the transmission capacity can be realized under the condition of not increasing the volume.
The invention provides a system for a multi-path parallel receiving optical device, which is configured to divide received incident light with M wavelengths into N paths of incident light through an optical splitting component, and divide each path of incident light into a plurality of wavelengths, wherein M is a positive integer, N is a positive integer, and N is smaller than M. And the lens groups 4 are configured to receive the plurality of wavelengths from the light splitting assembly, each group of lens groups 4 being distributed towards a vertical direction relative to the substrate 2, wherein each group of lens groups 4 refracts a corresponding one of the plurality of wavelengths towards a direction approaching the substrate 2. Thus, after the incident light with the M wavelengths is divided into N paths of incident light in the process of passing through the light splitting assembly, the incident light is refracted in the lens group, so that the number of channels can be increased without increasing the number of optical ports, the number of channels can be increased in a smaller limited space of the optical module, and a larger transmission bandwidth is provided. Therefore, the technical effects that the number of channels can be increased in a small limited space of the optical module and a larger transmission bandwidth can be provided are achieved.
In order to describe the method for the multi-path parallel receiving optical device in detail, the above embodiment describes a system for the multi-path parallel receiving optical device in detail, and based on the same inventive concept, the present application also provides a method for the multi-path parallel receiving optical device, which is described in detail in embodiment two.
Example two
The second embodiment of the invention provides a method for a multi-path parallel receiving optical device, which comprises the following steps:
step S100, dividing the received incident light with M wavelengths into N paths of incident light through a light splitting component, and dividing each path of incident light into a plurality of wavelengths, wherein M is a positive integer, N is a positive integer, and N is smaller than M;
step S200, receiving the plurality of wavelengths from the light splitting assembly through a lens group, wherein the lens group refracts the plurality of wavelengths toward a substrate.
Specifically, the received incident light with M wavelengths is split into N paths of incident light by the optical splitter 1, where N is a positive integer and is smaller than M; then, each optical demultiplexer 3 receives a corresponding path of incident light from the optical splitter 1, where the optical demultiplexer 3 divides the corresponding path of incident light into multiple wavelengths; receiving the plurality of wavelengths from the optical demultiplexer 3 through the lens group 4, wherein the lens group 4 refracts the plurality of wavelengths toward the substrate 2; receiving the refracted plurality of wavelengths by the photoelectric converter array 5; the received refracted multiple wavelengths are converted into electric signals through the photoelectric converter array 5; the electric signal from the photoelectric converter array 5 is amplified by the transimpedance amplifier array 6.
The invention provides a method for a multipath parallel receiving optical device, which divides received incident light with M wavelengths into N paths of incident light through a light splitting component, and divides each path of incident light into a plurality of wavelengths, wherein M is a positive integer, N is a positive integer, and N is smaller than M; the plurality of wavelengths from the light splitting assembly are received by a lens group 4, wherein the lens group refracts the plurality of wavelengths towards the substrate. Thus, after the incident light with the M wavelengths is divided into N paths of incident light in the process of passing through the light splitting assembly, the incident light is refracted in the lens group, so that the number of channels can be increased without increasing the number of optical ports, the number of channels can be increased in a smaller limited space of the optical module, and a larger transmission bandwidth is provided. Therefore, the technical effects that the number of channels can be increased in a small limited space of the optical module and a larger transmission bandwidth can be provided are achieved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A system for multiple parallel receiving optics, the system comprising:
a splitting component configured to split received incident light of M wavelengths into N incident lights and to split each incident light into a plurality of wavelengths, M being a positive integer, N being less than M;
a plurality of lens groups, the number of the lens groups being the same as the number of the N incident lights, the lens groups being configured to receive the plurality of wavelengths from the light splitting assembly, each group of the lens groups being distributed in a vertical direction with respect to a substrate, wherein each group of the lens groups refracts a corresponding one of the plurality of wavelengths in a direction approaching the substrate;
the lens group is provided with a reflecting surface and spherical lens groups with the same number as that of the N paths of incident light, each spherical lens group is configured to receive the plurality of wavelengths from the light splitting component, and the reflecting surface is configured to refract the plurality of wavelengths towards the direction close to the substrate;
the spherical transparent surface groups with the same quantity of the incident light in the N-equal 2,2 path comprise a first spherical transparent surface group and a second spherical transparent surface group, the first spherical transparent surface group and the second spherical transparent surface group are sequentially distributed in the vertical direction close to the substrate, the first spherical transparent surface group is provided with first spherical transparent surfaces with the same quantity with the corresponding multiple wavelengths, the second spherical transparent surface group is provided with second spherical transparent surfaces with the same quantity with the corresponding multiple wavelengths, the curvature radius of each first spherical transparent surface is the same, and the curvature radius of each second spherical transparent surface is the same;
the curvature radius of the first spherical lens surface is larger than that of the second spherical lens surface, or the curvature radius of the first spherical lens surface is smaller than that of the second spherical lens surface.
2. The system for multiple parallel receiving optics of claim 1, wherein said optical splitting assembly comprises:
an optical splitter configured to split received incident light of M wavelengths into N incident lights;
and N optical demultiplexers having the same number of incident light beams, each of the optical demultiplexers being coupled to the substrate, each of the optical demultiplexers being configured to receive a corresponding one of the incident light beams from the optical splitter, wherein the optical demultiplexers divide the corresponding one of the incident light beams into a plurality of wavelengths.
3. A system for multiple parallel receiving optics as claimed in claim 2, wherein:
each of the optical demultiplexers is distributed toward a vertical direction with respect to the substrate.
4. A system for multiple parallel receiving optics as claimed in claim 1, wherein:
an array of photoelectric converters configured to receive the plurality of wavelengths after refraction.
5. The system for multiple parallel receiving optics of claim 4 wherein:
the photoelectric converter array converts the received plurality of refracted wavelengths into an electrical signal;
the system also includes a transimpedance amplifier array coupled to the substrate that amplifies electrical signals from the array of optoelectronic transducers.
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| JP2006259772A (en) * | 2002-11-01 | 2006-09-28 | Omron Corp | Optical multiplexer/demultiplexer |
| CN104597575A (en) * | 2014-12-25 | 2015-05-06 | 武汉电信器件有限公司 | Multi-wavelength multiplexing/demultiplexing parallel light receiving/emitting component |
| CN108873195A (en) * | 2018-08-01 | 2018-11-23 | 青岛海信宽带多媒体技术有限公司 | Optical module and its light emitting devices |
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| US9348091B2 (en) * | 2013-12-20 | 2016-05-24 | Finisar Corporation | Multiplexer/demultiplexer based on diffraction and reflection |
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| CN211905785U (en) * | 2020-01-20 | 2020-11-10 | 武汉联特科技有限公司 | Packaging structure for multipath parallel light receiving device |
| CN212379610U (en) * | 2020-08-31 | 2021-01-19 | 福州高意光学有限公司 | Miniaturized multichannel wavelength division demultiplexing light receiving component |
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| JP2006259772A (en) * | 2002-11-01 | 2006-09-28 | Omron Corp | Optical multiplexer/demultiplexer |
| CN104597575A (en) * | 2014-12-25 | 2015-05-06 | 武汉电信器件有限公司 | Multi-wavelength multiplexing/demultiplexing parallel light receiving/emitting component |
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