CN113568116A - Photoelectric coupling device - Google Patents
Photoelectric coupling device Download PDFInfo
- Publication number
- CN113568116A CN113568116A CN202110845920.3A CN202110845920A CN113568116A CN 113568116 A CN113568116 A CN 113568116A CN 202110845920 A CN202110845920 A CN 202110845920A CN 113568116 A CN113568116 A CN 113568116A
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- Prior art keywords
- array
- focusing lens
- refraction
- glass substrate
- plc
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- 230000008878 coupling Effects 0.000 title claims abstract description 25
- 238000010168 coupling process Methods 0.000 title claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims description 17
- 239000004568 cement Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims 2
- 238000004049 embossing Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- G02B6/4206—Optical features
-
- 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
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- 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
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Elements Other Than Lenses (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photoelectric coupling device, which comprises an FA or PLC array, a glass substrate, a glass cover plate, a refraction focusing lens, a PD array and a heat sink, wherein the glass substrate is arranged on the glass cover plate; the rear end of the refraction focusing lens is provided with a second abutting surface abutted against the first abutting surface, the refraction focusing lens is provided with a total reflection surface, and the bottom of the refraction focusing lens is provided with a spherical array; the PD array is attached to the heat sink, and PDs in the PD array and focusing spherical surfaces in the spherical surface array are arranged in a one-to-one correspondence manner; light output by the FA or PLC array enters the refraction focusing lens through the second abutting surface, the light entering the refraction focusing lens is reflected to the focusing spherical surface through the total reflection surface, and the focusing spherical surface focuses the light to the photosensitive surface of the PD to realize the coupling with the PD. The invention has the advantages of simple structure, convenient operation, high coupling efficiency and low loss.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a photoelectric coupling device.
Background
With the emergence of intelligent devices, cloud computing and the internet of things, the network demand is continuously rising, the transmission rate of the system is urgently increased, and a transmission system with the rate of 100G and higher is gradually applied. For a high-speed optical module, a multi-pass chip integration mode is generally adopted at present to improve the transmission rate of a device. The high-speed PD photosensitive surface is smaller, in order to improve the coupling efficiency of the PD array, one method is to adopt the PD array etched with a silicon lens, the coupling efficiency and the actual assembly operation are simple, but the manufacturing complexity is high, and the other method is to mount the lens array in front of the PD array and converge incident beams to improve the coupling efficiency, but the light path structure is complex, the assembly steps are more, the consumed time is long, and the operation is difficult. In patent 201310433022.X, a reflector and a focusing lens array are fixed together by a structural member, PLC emergent light is coupled into a PD photosensitive surface, and more structural members are used for fixing and aligning, so that the structural members are complicated, the assembling steps are multiple, and the operation is very complicated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a photoelectric coupling device with simple structure, high coupling efficiency and low loss.
In order to solve the above problems, the present invention provides a photoelectric coupling apparatus, including:
an FA or PLC array;
the FA or PLC array is arranged between the glass substrate and the glass cover plate in a penetrating mode, and first abutting faces are arranged at the front ends of the glass substrate and the glass cover plate;
the rear end of the refraction focusing lens is provided with a second abutting surface abutted against the first abutting surface, the refraction focusing lens is provided with a total reflection surface, and the bottom of the refraction focusing lens is provided with a spherical array;
the PD array is attached to the heat sink, and PDs in the PD array and focusing spherical surfaces in the spherical array are arranged in a one-to-one correspondence manner;
and the light output by the FA or PLC array enters the refraction focusing lens through the second abutting surface, the light entering the refraction focusing lens is reflected to a focusing spherical surface through the total reflection surface, and the focusing spherical surface focuses the light to a photosensitive surface of the PD to realize the coupling with the PD.
As a further improvement of the present invention, the first abutting surface and the second abutting surface are provided with an anti-reflection angle.
As a further improvement of the invention, the anti-reflection angle is 4-6 degrees.
As a further improvement of the invention, the dioptric focusing lens has an imaging ratio of 1: 1.
As a further improvement of the invention, the single-mode laser mode field diameter output by the FA or PLC array is 9 um; the effective area of the photosensitive surface of the PD is 14-20um, the receiving angle is 0-14 degrees, and the diameter of a focusing light spot is 9 um.
As a further improvement of the invention, the glass substrate is provided with a V-shaped groove for accommodating the FA or PLC array, and the glass substrate and the glass cover plate are bonded by optical cement to fix the FA or PLC array.
As a further improvement of the invention, the rear end of the glass substrate extends out of the glass substrate and forms an extension part, and the FA or PLC array is adhered to the bottom of the extension part through optical cement.
As a further improvement of the present invention, the first contact surface and the second contact surface are bonded by an optical adhesive.
As a further improvement of the invention, the refraction angle of the total reflection surface is more than the total reflection angle of the material thereof by +8 degrees, so as to realize total reflection.
As a further improvement of the invention, the dioptric focusing lens is obtained by high-refractive-index glass die pressing, silicon-based etching or PC material thermal processing.
The invention has the beneficial effects that:
the photoelectric coupling device is provided with the refraction focusing lens, and the refraction focusing lens is provided with the total reflection surface and the focusing spherical surface, so that light output by an FA or PLC array directly enters the refraction focusing lens, is reflected to the focusing spherical surface through the total reflection surface, and is focused to the photosensitive surface of a PD through the focusing spherical surface, and the coupling with the PD is realized. The coupling device has the advantages of simple structure, convenience in operation, high coupling efficiency and low loss. Meanwhile, the total reflection angle is utilized, a high reflection film does not need to be plated, and the cost is saved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is an isometric view of a photocoupler in a preferred embodiment of the present invention;
FIG. 2 is a side view of a photocoupling device in a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a refractive focusing lens according to a preferred embodiment of the present invention;
FIG. 4 is an optical path diagram of a dioptric focusing lens and a PD in a preferred embodiment of the invention.
Description of the labeling: 1. optical cement; 10. an FA or PLC array; 20. a glass substrate; 21. an extension portion; 30. a glass cover plate; 40. a dioptric focusing lens; 41. a second abutting surface; 42. a total reflection surface; 43. focusing a spherical surface; 50. PD; 60. a heat sink.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
As shown in fig. 1 to 3, a photocoupling device in a preferred embodiment of the present invention includes: FA or PLC array 10, glass substrate 20, glass cover plate 30, dioptric focusing lens 40, PD50 and heat sink 60.
The glass substrate 20 is arranged on the glass cover plate 30, the FA or PLC array 10 is arranged between the glass substrate 20 and the glass cover plate 30 in a penetrating mode, and first abutting faces are arranged at the front ends of the glass substrate 20 and the glass cover plate 30; a second abutting surface 41 abutting against the first abutting surface is arranged at the rear end of the refraction focusing lens 40, a total reflection surface 42 is arranged on the refraction focusing lens 40, and a spherical array is arranged at the bottom of the refraction focusing lens 40; the PD array is attached to the heat sink 60, and the PDs 50 in the PD array are arranged in one-to-one correspondence with the focusing spheres 43 in the sphere array.
As shown in FIG. 4, the light output by the FA or PLC array 10 enters the refraction focusing lens 40 through the second abutting surface 41, the light entering the refraction focusing lens 40 is reflected to the focusing spherical surface 43 through the total reflection surface 42, and the focusing spherical surface 43 focuses the light to the photosensitive surface of the PD50, so as to realize the coupling with the PD 50.
The photoelectric coupling device is provided with the refraction focusing lens, and the refraction focusing lens is provided with the total reflection surface and the focusing spherical surface, so that light output by an FA or PLC array directly enters the refraction focusing lens, is reflected to the focusing spherical surface through the total reflection surface, and is focused to the photosensitive surface of a PD through the focusing spherical surface, and the coupling with the PD is realized. The coupling device has the advantages of simple structure, convenience in operation, high coupling efficiency and low loss. Meanwhile, the total reflection angle is utilized, a high reflection film does not need to be plated, and the cost is saved.
In some embodiments, the first and second abutment surfaces 41 are provided with an anti-reflection angle, which acts as an anti-reflection. Optionally, the anti-reflection angle is 4-6 degrees. The anti-reflection angle is an angle formed by the abutting surface and the vertical direction of the optical path.
In some embodiments, the imaging ratio of the dioptric focusing lens 40 is 1:1, and the image focal length is about 200um, so that the tolerance of the relative position of the focusing spherical surface 43 and the photosensitive surface of the PD50 during mounting can be ensured to be large, and the mounting operation is facilitated. Optionally, the diameter of the single-mode laser mode field output by the FA or PLC array 10 is 9 um; the effective area of the photosensitive surface of the PD50 is 14-20um, the receiving angle is 0-14 degrees, the diameter of a focusing light spot is 9um, and the PD mounting tolerance is large and is about +/-2.5 um.
Optionally, a V-shaped groove for accommodating the FA or PLC array 10 is formed in the glass substrate 20, and the FA or PLC array 10 is fixed by bonding the glass substrate 20 and the glass cover plate 30 through the optical cement 1. Further, the rear end of the glass substrate 20 extends out of the glass substrate 20 to form an extension portion 21, and the FA or PLC array 10 is bonded to the bottom of the extension portion 21 through the optical adhesive 1, so as to ensure the structural stability of the FA or PLC array 10.
Optionally, the first abutting surface and the second abutting surface 41 are bonded by the optical cement 1, so as to play roles of antireflection and curing.
In some embodiments, the total reflection surface 42 has a refraction angle greater than +8 ° of the total reflection angle of the material, so as to realize the total reflection function.
Optionally, the dioptric focusing lens 40 is obtained by high-refractive-index glass molding, silicon-based etching or thermal processing of a PC material. The method has the advantages of simple preparation, high integration level and high dimensional precision.
When assembling, the FA or PLC array 10 is clamped by the glass substrate 20 and the glass cover plate 30 and is fixed by optical cement to obtain a first structure; then, the first structure and the dioptric focusing lens 40 are attached together, and the first abutting surface and the second abutting surface 41 are bonded through the optical adhesive 1 to form a second structure; then, the PD array is attached to the heat sink 60, the structure two is actively coupled to the PD50, and the glass substrate 20 is bonded to the heat sink 60 by the optical glue 1, completing the assembly.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. An optoelectronic coupling device, comprising:
an FA or PLC array;
the FA or PLC array is arranged between the glass substrate and the glass cover plate in a penetrating mode, and first abutting faces are arranged at the front ends of the glass substrate and the glass cover plate;
the rear end of the refraction focusing lens is provided with a second abutting surface abutted against the first abutting surface, the refraction focusing lens is provided with a total reflection surface, and the bottom of the refraction focusing lens is provided with a spherical array;
the PD array is attached to the heat sink, and PDs in the PD array and focusing spherical surfaces in the spherical array are arranged in a one-to-one correspondence manner;
and the light output by the FA or PLC array enters the refraction focusing lens through the second abutting surface, the light entering the refraction focusing lens is reflected to a focusing spherical surface through the total reflection surface, and the focusing spherical surface focuses the light to a photosensitive surface of the PD to realize the coupling with the PD.
2. The photocoupling device of claim 1, wherein the first and second abutment surfaces are provided with an anti-reflection angle.
3. The photocoupler of claim 2, wherein said anti-reflection angle is 4-6 degrees.
4. The photocoupler of claim 1, wherein said dioptric focusing lens has an imaging ratio of 1: 1.
5. The optoelectronic coupling device of claim 4, wherein the single mode laser mode field diameter of the FA or PLC array output is 9 um; the effective area of the photosensitive surface of the PD is 14-20um, the receiving angle is 0-14 degrees, and the diameter of a focusing light spot is 9 um.
6. The photocoupling device of claim 1, wherein a V-shaped groove is formed on the glass substrate to accommodate the FA or PLC array, and the glass substrate and the glass cover plate are bonded by an optical cement to fix the FA or PLC array.
7. The photocoupling device of claim 6, wherein the back end of the glass substrate extends out of the glass substrate and forms an extension part, and the FA or PLC array is bonded to the bottom of the extension part by an optical cement.
8. The photocoupling device of claim 1, wherein the first and second abutment surfaces are bonded by optical glue.
9. The photocoupler of claim 1, wherein the angle of refraction of said total reflecting surface is greater than the angle of total reflection +8 ° of its material, achieving total reflection.
10. The photocoupler of claim 1, wherein said dioptric focusing lens is obtained by high refractive index glass embossing, silicon-based etching or PC material thermal processing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845920.3A CN113568116A (en) | 2021-07-26 | 2021-07-26 | Photoelectric coupling device |
| NL2031954A NL2031954B1 (en) | 2021-07-26 | 2022-05-20 | Photoelectric coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845920.3A CN113568116A (en) | 2021-07-26 | 2021-07-26 | Photoelectric coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113568116A true CN113568116A (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110845920.3A Pending CN113568116A (en) | 2021-07-26 | 2021-07-26 | Photoelectric coupling device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113568116A (en) |
| NL (1) | NL2031954B1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513348A (en) * | 2013-09-23 | 2014-01-15 | 武汉光迅科技股份有限公司 | Optical waveguide chip and pd array lens coupling device |
| CN105242360A (en) * | 2006-12-22 | 2016-01-13 | 思科技术公司 | Dual-lensed unitary optical receiver assembly |
| CN211426856U (en) * | 2019-10-22 | 2020-09-04 | 上海雍邑光电科技有限公司 | Optical device structure with lens and glue on optical path |
| CN215641959U (en) * | 2021-07-26 | 2022-01-25 | 亨通洛克利科技有限公司 | Photoelectric coupling device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6956995B1 (en) * | 2001-11-09 | 2005-10-18 | Silicon Light Machines Corporation | Optical communication arrangement |
| US9435963B2 (en) * | 2012-03-30 | 2016-09-06 | Corning Cable Systems Llc | Misalignment-tolerant total-internal-reflection fiber optic interface modules and assemblies with high coupling efficiency |
| US9151912B2 (en) * | 2012-06-28 | 2015-10-06 | Corning Cable Systems Llc | Optical fiber segment holders including shielded optical fiber segments, connectors, and methods |
| US9876575B2 (en) * | 2014-04-30 | 2018-01-23 | Infinera Corporation | Hybrid optical transmitter and/or receiver structure |
| US10156688B1 (en) * | 2017-08-17 | 2018-12-18 | Avago Technologies International Sales Pte. Limited | Passive alignment system and an optical communications module that incorporates the passive alignment system |
-
2021
- 2021-07-26 CN CN202110845920.3A patent/CN113568116A/en active Pending
-
2022
- 2022-05-20 NL NL2031954A patent/NL2031954B1/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242360A (en) * | 2006-12-22 | 2016-01-13 | 思科技术公司 | Dual-lensed unitary optical receiver assembly |
| CN103513348A (en) * | 2013-09-23 | 2014-01-15 | 武汉光迅科技股份有限公司 | Optical waveguide chip and pd array lens coupling device |
| CN211426856U (en) * | 2019-10-22 | 2020-09-04 | 上海雍邑光电科技有限公司 | Optical device structure with lens and glue on optical path |
| CN215641959U (en) * | 2021-07-26 | 2022-01-25 | 亨通洛克利科技有限公司 | Photoelectric coupling device |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2031954B1 (en) | 2024-01-08 |
| NL2031954A (en) | 2023-01-31 |
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