CN210605101U - Multipath wavelength demultiplexing light receiving component based on optical waveguide - Google Patents
Multipath wavelength demultiplexing light receiving component based on optical waveguide Download PDFInfo
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- CN210605101U CN210605101U CN201921554367.2U CN201921554367U CN210605101U CN 210605101 U CN210605101 U CN 210605101U CN 201921554367 U CN201921554367 U CN 201921554367U CN 210605101 U CN210605101 U CN 210605101U
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Abstract
The utility model discloses a multichannel wavelength demultiplexing light receiving component based on optical waveguide, including light emission unit, light demultiplexing unit, speculum and convergent lens, light emission unit is arranged in sending the light that has a plurality of wavelengths to light demultiplexing unit; the optical demultiplexing unit is used for demultiplexing the multi-wavelength light emitted by the light emitting unit into at least two paths of single-wavelength light; the reflector is used for reflecting the light emitted by the optical demultiplexing unit to realize the bending of the light path; the converging lens is used for converging the light emitted by the optical demultiplexing unit; the convergent lens is located on an emergent light path of the reflector, or the reflector is located on the emergent light path of the convergent lens. The receiving component can solve the problem that the responsivity is lost under the condition that the photosensitive surface of the PD is reduced.
Description
Technical Field
The utility model relates to an optical communication technical field specifically is a multichannel wavelength demultiplexing light receiving assembly based on optical waveguide.
Background
With the rapid development of data centers and Ethernet, the high speed, high integration, small size and low cost become the iteration trend of the optical module industry; at present, wavelength division multiplexing/demultiplexing optical modules such as QSFP, QSFP +, QSFP28 and the like corresponding to 40G and 100G rates have been applied in the market in large batches, and next-generation optical modules with 200G and 400G rates, for example: the packaging modes such as OSFP, QSFP-DD and the like also enter the commercialization stage, and the optical module with TB level rate follows the packaging modes.
At present, the wavelength division multiplexing/demultiplexing schemes commonly used in the industry can be roughly divided into two types, and the two schemes are a filter scheme and an optical waveguide scheme, and the advantages and the disadvantages of the two schemes are very prominent.
Referring to fig. 1, the implementation principle of the filter sheet type wavelength division multiplexing/demultiplexing scheme is to use a filter sheet set plated with a transmission/reflection film related to wavelength to complete the multiplexing and demultiplexing of light, and the filter sheet type wavelength division multiplexing/demultiplexing scheme has the advantages of small insertion loss, large coupling tolerance and the like; however, the filter sheet type wavelength division multiplexing/demultiplexing scheme has a long optical path, a conventional divergent light source cannot be directly used, divergent light must be collimated, a collimated light beam passes through the filter sheet type wavelength division multiplexing/demultiplexing device and then is converged by a lens to be coupled and aligned with a receiving chip, and the spacing between channels of the filter sheet type wavelength division multiplexing/demultiplexing scheme is limited to the minimum, so that the size of an optical device using the scheme is large, the optical device directly occupies a board distribution space of a PCB inside a module, and the problem of solving the problem is a great challenge for a traditional module packaging company.
The optical waveguide type wavelength division multiplexing/demultiplexing scheme is implemented by using interference or diffraction phenomenon to complete optical multiplexing/demultiplexing when light propagates in a planar optical waveguide, and the current common practice in the industry is to grow the planar optical waveguide of MZI scheme or AWG scheme on a wafer of silicon, glass or other base materials, then to cleave, polish and the like the wafer to form an independent chip, then to couple the chip by using FA (fiber array) to form an independent wavelength division multiplexing/demultiplexing device, and finally to optically align with a transmitting/receiving device at a module end.
The scheme has the advantages of strong applicability, low process difficulty, small volume, low cost and the like; however, in the wavelength division demultiplexing scheme of the optical waveguide, because the exit end of the wavelength division demultiplexing scheme is divergent and the optical path needs to be bent downwards when the wavelength division demultiplexing scheme is coupled with the PD end, referring to fig. 2 to 5, the optical path bending is realized by grinding the optical waveguide to form a total reflection surface or externally connecting an FA with a total reflection angle, and the two schemes are acceptable for the loss of the responsivity when being applied to a scene with a large photosensitive surface of a receiving end (such as 60um and 36 umPD); however, as the speed of the optical module increases, the photosensitive surface of the PD has to be reduced (e.g., 20um, 16um PD) to increase the PD bandwidth, in which case if the current divergent light mode is still used for coupling, the responsivity is greatly lost, which results in unqualified parameters.
Disclosure of Invention
An object of the utility model is to provide a multichannel wavelength decomposition multiplexing light receiving component based on optical waveguide, this receiving component can solve the problem that the loss takes place for the responsivity under the condition that the photosensitive surface of PD reduces.
The utility model discloses a realize like this: the utility model discloses a multichannel wavelength demultiplexing light receiving component based on optical waveguide, including light emission unit, light demultiplexing unit, speculum and convergent lens, light emission unit is arranged in sending the light that has a plurality of wavelengths to light demultiplexing unit; the optical demultiplexing unit is used for demultiplexing the multi-wavelength light emitted by the light emitting unit into at least two paths of single-wavelength light; the reflector is used for reflecting the light emitted by the optical demultiplexing unit to realize the bending of the light path; the converging lens is used for converging the light emitted by the optical demultiplexing unit; the convergent lens is located on an emergent light path of the reflector, or the reflector is located on the emergent light path of the convergent lens.
Further, an optical waveguide element is disposed in the optical demultiplexing unit, and is configured to demultiplex the optical beam having the optical signals with multiple wavelengths into at least two single-wavelength lights.
The optical waveguide element comprises a light inlet end optical waveguide and at least two light outlet end optical waveguides, wherein the light outlet end optical waveguides are connected with the light inlet end optical waveguide, and light beams transmitted in the light inlet end optical waveguides are divided into at least two beams.
The end face of the light-incoming end optical waveguide and the light-incoming face of the optical demultiplexing unit are located on the same plane, and the end face of the light-outgoing end optical waveguide and the light-outgoing face of the optical demultiplexing unit are located on the same plane.
The light beam with a plurality of wavelength optical signals enters from the light-entering end optical waveguide of the light-entering surface of the optical demultiplexing unit, and the corresponding optical signals with different wavelengths are respectively emitted from a plurality of light-emitting end optical waveguides of the light-emitting surface of the optical demultiplexing unit.
Further, the reflector comprises a reflecting surface, a first transmitting surface and a second transmitting surface; the first transmission surface of the reflector is positioned on the incident light path of the reflection surface of the reflector, and the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; the first transmission surface of the reflector is fixedly attached to the light-emitting surface of the optical demultiplexing unit; and the second transmission surface of the reflector is fixedly attached to the transmission surface of the converging lens.
Further, the reflector and the converging lens are integrally formed into an integral optical element; the optical element comprises a transmission surface, a reflection surface and a light-gathering surface; the transmission surface of the optical element is positioned on the incident light path of the reflection surface of the optical element; the light-gathering surface of the optical element is positioned on the emergent light path of the reflecting surface of the optical element; the reflecting surface of the optical element is used for reflecting the light entering from the transmitting surface of the optical element to the light-gathering surface of the optical element, and the light-gathering surface of the optical element is used for gathering the light reflected by the reflecting surface of the optical element and then transmitting the light to the light receiving unit; the transmission surface of the optical element is fixedly attached to the light-emitting surface of the optical demultiplexing unit.
Furthermore, the inclined end face of the light-emitting face of the optical demultiplexing unit forms an included angle α of 0-15 degrees with the vertical direction, and the inclined direction of the light-emitting face of the optical demultiplexing unit can be set according to actual needs, and can be inclined along the light transmission direction or inclined towards the direction opposite to the light transmission direction.
Further, the converging lens comprises a transmission surface and a light-gathering surface; the light-gathering surface of the converging lens is positioned on the emergent light path of the light-emitting surface of the optical demultiplexing unit; the transmission surface of the convergent lens is positioned on an emergent light path of the light-gathering surface of the convergent lens; the light condensing surface of the condensing lens is used for condensing the light emitted from the optical demultiplexing unit and then emitting the light through the transmission surface of the condensing lens; the reflector comprises a reflecting surface, a first transmission surface and a second transmission surface; the first transmission surface of the reflector is positioned on an incident light path of the reflection surface of the reflector; the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the reflecting surface of the reflector is used for reflecting light entering from the first transmitting surface of the reflector to the second transmitting surface of the reflector, the light is emitted to the light receiving unit through the second transmitting surface of the reflector, and the first transmitting surface of the reflector is fixedly attached to the transmitting surface of the converging lens.
Furthermore, the converging lens and the optical demultiplexing unit are both fixed on the base; the light-emitting surface of the optical demultiplexing unit is perpendicular to the light transmission direction.
The utility model provides a multipath wavelength division multiplexing light receiving component based on optical waveguide, which comprises an optical division multiplexing unit and a convergent lens, wherein an optical waveguide element is arranged in the optical division multiplexing unit and is used for demultiplexing multi-wavelength light emitted by a light emitting unit into at least two single-wavelength light; the emergent side of the optical demultiplexing unit is provided with a reflecting surface and a transmitting surface; the transmission surface of the optical demultiplexing unit is positioned on the emergent light path of the reflection surface of the optical demultiplexing unit; the reflecting surface of the optical demultiplexing unit is positioned at the emergent end of the optical waveguide element in the optical demultiplexing unit; the reflection surface of the optical demultiplexing unit is used for reflecting the light emitted from the emitting end of the optical waveguide element to the transmission surface of the optical demultiplexing unit so as to realize the bending of the optical path; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; and the transmission surface of the convergent lens is fixedly attached to the transmission surface of the optical demultiplexing unit.
Furthermore, a total reflection surface is arranged at the emergent end of the optical waveguide element; the end face of the optical waveguide and the surface of the optical demultiplexing unit are located on the same plane.
Furthermore, the light inlet surface of the optical demultiplexing unit is an inclined end surface, and the included angle β between the inclined end surface of the light inlet surface of the optical demultiplexing unit and the vertical direction is 0-15 degrees.
Further, the light emission unit is including being used for launching the optic fibre capillary and the optic fibre adapter that have the light signal of a plurality of wavelengths, the optic fibre adapter passes through optic fibre and is connected with the optic fibre capillary, the optic fibre capillary is used for leading the optic fibre adapter to have the light beam conduction of a plurality of wavelength light signals to the optical demultiplexing unit through optic fibre conduction, the optical demultiplexing unit advance the plain noodles and the play plain noodles laminating of optic fibre capillary is fixed.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses carry out the corner with converging lens with the light of diverging of photolysis multiplex unit through the speculum and assemble for originally because the light of diverging and can't use the waveguide type photolysis multiplex subassembly on the high rate can be used on the high rate product, and need not go to use filter plate formula wavelength division demultiplexing scheme, like this greatly reduced the encapsulation cost of device.
Drawings
Fig. 1 is a schematic diagram of an optical path structure of a filter-type multiway wavelength demultiplexing optical receiving assembly commonly used in the industry;
FIG. 2 is a schematic diagram of a wavelength division multiplexed light receiving module of one optical waveguide scheme commonly used in the industry;
FIG. 3 is an enlarged view of the portion P of FIG. 2;
FIG. 4 is a schematic diagram of a wavelength division multiplexed light receiving component of another optical waveguide scheme commonly used in the industry;
FIG. 5 is an enlarged view of the portion P of FIG. 4;
fig. 6 is a schematic structural diagram of a wavelength division multiplexing optical receiving module based on an optical waveguide scheme according to an embodiment of the present invention;
FIG. 7 is an enlarged view of portion P of FIG. 6;
fig. 8 is a schematic structural diagram of a mirror and lens array of a wavelength division multiplexing optical receiving device based on an optical waveguide scheme according to an embodiment of the present invention;
fig. 9 is a side view of an optical demultiplexing unit structure of a multiple wavelength division multiplexing optical receiving module according to an embodiment of the present invention;
fig. 10 is a structural bottom view of an optical demultiplexing unit of a multiple wavelength division multiplexing optical receiving module according to an embodiment of the present invention;
fig. 11 is a diagram illustrating another implementation of a wavelength division multiplexing optical receiving module according to an embodiment of the present invention;
FIG. 12 is an enlarged view of portion P of FIG. 11;
fig. 13 is a diagram illustrating another implementation of a wavelength division multiplexing optical receiving module according to an embodiment of the present invention;
FIG. 14 is an enlarged view of portion P of FIG. 13;
fig. 15 is a diagram illustrating another implementation of a wavelength division multiplexing optical receiving module according to an embodiment of the present invention;
fig. 16 is an enlarged view of the portion P of fig. 15.
In the reference symbols: 10 is an optical adapter, 11 is an optical fiber, 12 is a single-channel capillary tube, 2 is an optical demultiplexing unit, 20 is a light inlet surface, 21 is a light outlet surface, 22 is a light inlet end optical waveguide, 23/24/25/26 is a light outlet end optical waveguide, 3 is a reflector, 30 is a first transmission surface, 31 is a reflection surface, 32 is a second transmission surface, 4 is a converging lens array, 40 is a third transmission surface, 41 is a light collecting surface, 5 is a base, and 6 is an optical receiving unit.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
First embodiment referring to fig. 6 to 10, an embodiment of the present invention provides a multiple wavelength division multiplexing optical receiving assembly based on an optical waveguide scheme, including an optical transmitting unit composed of an optical adapter 10, an optical fiber 11, and a single-channel capillary tube (single-channel FA)12, an optical demultiplexing unit (DEMUX)2, a reflecting mirror 3, and a converging lens array 4. The single-channel capillary (single-channel FA)12 of the light emitting unit, the optical demultiplexing unit (DEMUX)2, the mirror 3, and the lens array 4 all fix the units by means of index-matched glue.
Further, an optical waveguide element is arranged in the optical demultiplexing unit and is used for demultiplexing the light beam with the optical signals of a plurality of wavelengths into at least two single-wavelength lights; the optical waveguide element comprises a light inlet end optical waveguide and at least two light outlet end optical waveguides, one end of the light inlet end optical waveguide penetrates through a light inlet surface of the optical demultiplexing unit, the other end of the light inlet end optical waveguide is connected with one end of the light outlet end optical waveguide, the other end of the light outlet end optical waveguide penetrates through a light outlet surface of the optical demultiplexing unit, and light beams transmitted in the light inlet end optical waveguide are divided into at least two beams.
The reflector comprises a reflecting surface, a first transmission surface and a second transmission surface; the first transmission surface of the reflector is positioned on the incident light path of the reflection surface of the reflector, and the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; the first transmission surface of the reflector is fixedly attached to the light-emitting surface of the optical demultiplexing unit; and the second transmission surface of the reflector is fixedly attached to the transmission surface of the converging lens.
Wherein, the single-channel capillary (single-channel FA)12 of the optical transmitting unit is used to transmit the light beam with multiple wavelength optical signals, which is transmitted from the optical adapter 10 through the optical fiber 11, to the optical demultiplexing unit (DEMUX)2 through the single-channel capillary (single-channel FA)12, and then the single-channel capillary (single-channel FA)12 and the two mutually contacting surfaces of the optical demultiplexing unit (DEMUX)2 are glued and fixed by using an index matching glue.
For convenience of detailed description, the optical signals of multiple wavelengths are respectively defined but not limited to λ1、λ2、λ3、λ4The optical adapter 10 transmits the light beam with multiple wavelength optical signals from the optical fiber 11 to the optical demultiplexing unit (DEMUX)2 through the single-channel capillary (single-channel FA)12, and the light beam with multiple wavelength optical signals enters from the light-entering side 20 of the optical demultiplexing unit (DEMUX)2 through the light-entering side waveguide 22 and exits from the 23/24/25/26 exit side optical waveguide of the light-exiting side 21 of the optical demultiplexing unit (DEMUX)2 to correspond to the λ l1、λ2、λ3、λ4Optical signals of different wavelengths.
As the optimization scheme of the embodiment of the utility model, in order to improve the return loss of the product, the light incoming side 20 of the optical demultiplexing unit (DEMUX)2 and the light outgoing side 21 end face can be processed into 0-15 degrees by laser cutting or grinding, as shown in the figures, α and β, and in order to match with the angle of the light incoming side end face of the optical demultiplexing unit (DEMUX)2, the single-channel capillary (or single-channel FA)12 of the light emitting unit can also process the end face into 0-15 degrees by laser cutting or grinding, preferably, the coating film can be selected to increase the transmittance of each end face, and the non-coating film can also be selected.
Further, the light entrance surface of the optical demultiplexing unit is an inclined surface, and the light entrance surface of the optical demultiplexing unit is inclined in a direction opposite to the light propagation direction. The light-emitting surface of the optical demultiplexing unit is an inclined surface, and the light-emitting surface of the optical demultiplexing unit is inclined along the light transmission direction.
The reflector comprises a reflecting surface, a first transmission surface and a second transmission surface; the first transmission surface of the reflector is positioned on the incident light path of the reflection surface of the reflector, and the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; the first transmission surface of the reflector is fixedly attached to the light-emitting surface of the optical demultiplexing unit; and the second transmission surface of the reflector is fixedly attached to the transmission surface of the converging lens.
Further, the corresponding λ is emitted from the 23/24/25/26 emergent end optical waveguide of the light emergent side 21 of the optical Demultiplexer (DEMUX)21、λ2、λ3、λ4The optical signals with different wavelengths pass through the first transmission surface 30 of the reflector 3, and the optical signals lambda with different wavelengths pass through the first reflection surface 31 of the reflector 31、λ2、λ3、λ4Reflected to the second transmission surface 32 of the mirror 3, the optical signal λ of the different wavelength1、λ2、λ3、λ4The optical signals λ of different wavelengths pass through the second transmission surface 32 of the reflector 3 and the third transmission surface 40 of the lens array 41、λ2、λ3、λ4And then the light beams pass through the first emergent surfaces 41 of the lens arrays 4 and are converged below the lens arrays 4.
As an optimization scheme of the embodiment of the present invention, the first transmission surface 30 of the reflector 3 and the light-emitting side 21 of the optical demultiplexing unit (DEMUX)2, the second transmission surface 32 of the reflector 3 and the third transmission surface 40 of the lens array 4 are also fixed by using the refractive index matching glue.
Preferably, the first transmission surface 30 and the second transmission surface 32 of the reflector 3 may be selectively coated to increase the transmittance of the surface, or may be selectively uncoated; the first reflecting surface 31 of the reflector 3 may be selectively coated to increase the reflectivity of the surface, or may be selectively uncoated.
Preferably, an included angle formed between the first reflecting surface 31 of the reflecting mirror 3 and the first and second transmitting surfaces 30 and 32 satisfies a total reflection state.
Preferably, the ROC (radius of curvature) and CA (effective clear aperture) of the third transmission surface 40 of the lens array 4 are adjusted according to the actual situation in the application. In this embodiment, the transmission surface of the converging lens is a plane, and the exit surface of the converging lens is a convex surface, but not limited to a convex surface.
Second embodiment referring to fig. 11 and 12, the reflector and the converging lens are integrally formed as a unitary optical element; the optical element comprises a transmission surface, a reflection surface and a light-gathering surface; the transmission surface of the optical element is positioned on the incident light path of the reflection surface of the optical element; the light-gathering surface of the optical element is positioned on the emergent light path of the reflecting surface of the optical element; the reflecting surface of the optical element is used for reflecting the light entering from the transmitting surface of the optical element to the light-gathering surface of the optical element, and the light-gathering surface of the optical element is used for gathering the light reflected by the reflecting surface of the optical element and then transmitting the light to the light receiving unit; the transmission surface of the optical element is fixedly attached to the light-emitting surface of the optical demultiplexing unit.
Other technical features of the present embodiment are the same as those of the first embodiment.
Third embodiment referring to fig. 13 and 14, the condensing lens includes a transmission surface and a condensing surface; the light-gathering surface of the converging lens is positioned on the emergent light path of the light-emitting surface of the optical demultiplexing unit; the transmission surface of the convergent lens is positioned on an emergent light path of the light-gathering surface of the convergent lens; the light condensing surface of the condensing lens is used for condensing the light emitted from the optical demultiplexing unit and then emitting the light through the transmission surface of the condensing lens; the reflector comprises a reflecting surface, a first transmission surface and a second transmission surface; the first transmission surface of the reflector is positioned on an incident light path of the reflection surface of the reflector; the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the reflecting surface of the reflector is used for reflecting light entering from the first transmitting surface of the reflector to the second transmitting surface of the reflector, the light is emitted to the light receiving unit through the second transmitting surface of the reflector, and the first transmitting surface of the reflector is fixedly attached to the transmitting surface of the converging lens.
Furthermore, the converging lens and the optical demultiplexing unit are both fixed on the base; the light-emitting surface of the optical demultiplexing unit is perpendicular to the light transmission direction.
Other technical features of the present embodiment are the same as those of the first embodiment.
Fourth embodiment referring to fig. 15 and 16, the present invention provides an optical waveguide-based multiple wavelength demultiplexing assembly, including an optical demultiplexing unit and a converging lens, wherein an optical waveguide element is disposed in the optical demultiplexing unit, and is configured to demultiplex multiple wavelengths emitted by the light emitting unit into at least two single wavelengths; the emergent side of the optical demultiplexing unit is provided with a reflecting surface and a transmitting surface; the transmission surface of the optical demultiplexing unit is positioned on the emergent light path of the reflection surface of the optical demultiplexing unit; the reflecting surface of the optical demultiplexing unit is positioned at the emergent end of the optical waveguide element in the optical demultiplexing unit; the reflection surface of the optical demultiplexing unit is used for reflecting the light emitted from the emitting end of the optical waveguide element to the transmission surface of the optical demultiplexing unit so as to realize the bending of the optical path; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; and the transmission surface of the convergent lens is fixedly attached to the transmission surface of the optical demultiplexing unit.
Furthermore, a total reflection surface is arranged at the emergent end of the optical waveguide element; the end face of the optical waveguide and the surface of the optical demultiplexing unit are located on the same plane.
Furthermore, the light inlet surface of the optical demultiplexing unit is an inclined end surface, and the included angle β between the inclined end surface of the light inlet surface of the optical demultiplexing unit and the vertical direction is 0-15 degrees.
Further, the light emission unit is including being used for launching the optic fibre capillary and the optic fibre adapter that have the light signal of a plurality of wavelengths, the optic fibre adapter passes through optic fibre and is connected with the optic fibre capillary, the optic fibre capillary is used for leading the optic fibre adapter to have the light beam conduction of a plurality of wavelength light signals to the optical demultiplexing unit through optic fibre conduction, the optical demultiplexing unit advance the plain noodles and the play plain noodles laminating of optic fibre capillary is fixed.
Other technical features of the present embodiment are the same as those of the first embodiment.
While the embodiments of the present invention have been illustrated and described in considerable detail, the present disclosure is not limited to the foregoing embodiments, and it is apparent that modifications and variations of the present invention are possible in light of the above teachings. Accordingly, other persons skilled in the art can utilize the invention and embodiments with various modifications to adapt it to other uses as intended. I.e., the scope defined by the claims appended hereto and their equivalents.
Claims (11)
1. A multipath wavelength division multiplexing light receiving component based on optical waveguide is characterized by comprising an optical division multiplexing unit, a reflector and a converging lens, wherein the optical division multiplexing unit is used for dividing multi-wavelength light emitted by a light emitting unit into at least two paths of single-wavelength light; the reflector is used for reflecting the light emitted by the optical demultiplexing unit to realize the bending of the light path; the converging lens is used for converging the light emitted by the optical demultiplexing unit; the convergent lens is located on an emergent light path of the reflector, or the reflector is located on the emergent light path of the convergent lens.
2. The wavelength demultiplexing optical receiving module according to claim 1, wherein: the optical demultiplexing unit is internally provided with an optical waveguide element for demultiplexing a light beam having a plurality of wavelength optical signals into at least two single-wavelength lights.
3. The wavelength demultiplexing optical receiving module according to claim 1, wherein: the reflector comprises a reflecting surface, a first transmission surface and a second transmission surface; the first transmission surface of the reflector is positioned on the incident light path of the reflection surface of the reflector, and the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; the first transmission surface of the reflector is fixedly attached to the light-emitting surface of the optical demultiplexing unit; and the second transmission surface of the reflector is fixedly attached to the transmission surface of the converging lens.
4. The wavelength demultiplexing optical receiving module according to claim 1, wherein: the reflector and the converging lens are integrally formed into an integral optical element; the optical element comprises a transmission surface, a reflection surface and a light-gathering surface; the transmission surface of the optical element is positioned on the incident light path of the reflection surface of the optical element; the light-gathering surface of the optical element is positioned on the emergent light path of the reflecting surface of the optical element; the reflecting surface of the optical element is used for reflecting the light entering from the transmitting surface of the optical element to the light-gathering surface of the optical element, and the light-gathering surface of the optical element is used for gathering the light reflected by the reflecting surface of the optical element and then transmitting the light to the light receiving unit; the transmission surface of the optical element is fixedly attached to the light-emitting surface of the optical demultiplexing unit.
5. The wavelength division multiplexing optical receiver assembly according to claim 1, 3 or 4, wherein the light-emitting surface of the optical demultiplexing unit is an inclined surface, and an included angle α between the inclined surface of the light-emitting surface of the optical demultiplexing unit and the vertical direction is 0-15 °.
6. The wavelength demultiplexing optical receiving module according to claim 1, wherein: the converging lens comprises a transmission surface and a light-gathering surface; the light-gathering surface of the converging lens is positioned on the emergent light path of the light-emitting surface of the optical demultiplexing unit; the transmission surface of the convergent lens is positioned on an emergent light path of the light-gathering surface of the convergent lens; the light condensing surface of the condensing lens is used for condensing the light emitted from the optical demultiplexing unit and then emitting the light through the transmission surface of the condensing lens; the reflector comprises a reflecting surface, a first transmission surface and a second transmission surface; the first transmission surface of the reflector is positioned on an incident light path of the reflection surface of the reflector; the second transmission surface of the reflector is positioned on the emergent light path of the reflection surface of the reflector; the reflecting surface of the reflector is used for reflecting light entering from the first transmitting surface of the reflector to the second transmitting surface of the reflector, the light is emitted to the light receiving unit through the second transmitting surface of the reflector, and the first transmitting surface of the reflector is fixedly attached to the transmitting surface of the converging lens.
7. The wavelength demultiplexing optical receiving module according to claim 6, wherein: the convergent lens and the optical demultiplexing unit are fixed on the base; the light-emitting surface of the optical demultiplexing unit is perpendicular to the light transmission direction.
8. A multipath wavelength division multiplexing light receiving component based on optical waveguide is characterized by comprising an optical demultiplexing unit and a converging lens, wherein an optical waveguide element is arranged in the optical demultiplexing unit and is used for demultiplexing multi-wavelength light emitted by a light emitting unit into at least two paths of single-wavelength light; the emergent side of the optical demultiplexing unit is provided with a reflecting surface and a transmitting surface; the transmission surface of the optical demultiplexing unit is positioned on the emergent light path of the reflection surface of the optical demultiplexing unit; the reflecting surface of the optical demultiplexing unit is positioned at the emergent end of the optical waveguide element in the optical demultiplexing unit; the reflection surface of the optical demultiplexing unit is used for reflecting the light emitted from the emitting end of the optical waveguide element to the transmission surface of the optical demultiplexing unit so as to realize the bending of the optical path; the converging lens comprises a transmission surface and a light-gathering surface, and the transmission surface of the converging lens is positioned on an incident light path of the light-gathering surface of the converging lens; the light-gathering surface of the converging lens is used for gathering the light entering from the transmission surface of the converging lens and then transmitting the light to the light receiving unit; and the transmission surface of the convergent lens is fixedly attached to the transmission surface of the optical demultiplexing unit.
9. The wavelength demultiplexing optical receiving module according to claim 8, wherein: arranging a total reflection surface at the emergent end of the optical waveguide element; the end face of the optical waveguide and the surface of the optical demultiplexing unit are located on the same plane.
10. The wavelength division multiplexing optical receiver assembly according to claim 1 or 8, wherein the light entrance surface of the optical demultiplexing unit is an inclined end surface, and an angle β between the inclined end surface of the light entrance surface of the optical demultiplexing unit and a vertical direction is 0 to 15 °.
11. The wavelength demultiplexing optical receiving module according to claim 1 or 8, wherein: the light emission unit is including being used for launching optic fibre capillary and the optic fibre adapter that has the light signal of a plurality of wavelengths, the optic fibre adapter passes through optic fibre and is connected with the optic fibre capillary, the optic fibre capillary is used for conducting the light beam that has a plurality of wavelength light signals that the optic fibre adapter comes through optic fibre to the optical demultiplexing unit, the optical demultiplexing unit advance the plain noodles laminating of light face and optic fibre capillary and fix.
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| CN201921554367.2U CN210605101U (en) | 2019-09-18 | 2019-09-18 | Multipath wavelength demultiplexing light receiving component based on optical waveguide |
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| CN201921554367.2U CN210605101U (en) | 2019-09-18 | 2019-09-18 | Multipath wavelength demultiplexing light receiving component based on optical waveguide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946837A (en) * | 2021-02-04 | 2021-06-11 | 光彩芯辰(浙江)科技有限公司 | Light receiving assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946837A (en) * | 2021-02-04 | 2021-06-11 | 光彩芯辰(浙江)科技有限公司 | Light receiving assembly |
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Address after: 430000 building 12, Block E, 52 Liufang Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: Wuhan Liante Technology Co.,Ltd. Address before: 430000 building 12, Block E, 52 Liufang Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee before: Linktel Technologies Co.,Ltd. |