CN110651212B - Multichannel parallel bidirectional device coupling device - Google Patents
Multichannel parallel bidirectional device coupling device Download PDFInfo
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- CN110651212B CN110651212B CN201980001401.XA CN201980001401A CN110651212B CN 110651212 B CN110651212 B CN 110651212B CN 201980001401 A CN201980001401 A CN 201980001401A CN 110651212 B CN110651212 B CN 110651212B
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- optical signal
- lens array
- end device
- beam splitter
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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
Abstract
The invention relates to a multichannel parallel bidirectional device coupling device which comprises a first lens array and a second lens array, wherein the first lens array is used for arranging a transmitting end device and a receiving end device of a first optical signal, the second lens array is used for arranging a transmitting end device and a receiving end device of a second optical signal, and the wavelengths of the first optical signal and the second optical signal are different. In the scheme of the invention, through arranging the two lens arrays, only one lens array needs to realize the alignment of the optical signal with one wavelength, the alignment difficulty is greatly reduced, and the alignment efficiency is further improved.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a coupling device of a multichannel parallel bidirectional device.
Background
The optical transceiver module (optical module for short) mainly functions to convert a received optical signal into an electrical signal and convert the electrical signal into an optical signal for transmission, so as to realize data transmission. For short-range high-speed optical modules, the standard SR4.2 employs dual wavelengths 850nm and 910 nm. The current low cost design is to use chip on board, as shown in fig. 1, and arrange the transmitting end and receiving end of two wavelength optical signals on one lens array at the same time. Because multiple channels are required to be aligned simultaneously, the combination precision of the lens array is required to be high, and the implementation difficulty is high. As shown in fig. 1, for 8-channel transceiving, it is necessary to simultaneously achieve alignment of 4 transceiving/transmitting end devices, which is difficult to implement and inefficient in alignment.
Disclosure of Invention
The invention aims to provide a coupling device of a multi-channel parallel bidirectional device, which can reduce the combination precision of a lens array and improve the alignment efficiency.
In order to achieve the purpose of the present invention, the embodiment of the present invention provides the following technical solutions:
a multichannel parallel bidirectional device coupling device comprises a first lens array and a second lens array, wherein the first lens array is used for arranging a transmitting end device and a receiving end device of a first optical signal, the second lens array is used for arranging a transmitting end device and a receiving end device of a second optical signal, and the wavelengths of the first optical signal and the second optical signal are different.
Among the above-mentioned coupling device, through setting up two lens arrays, be used for arranging the transmitting terminal device and the receiving terminal device of the light signal of a wavelength respectively, compare in the prior art and realize the alignment of two kinds of light signals through a lens array, aim at degree of difficulty greatly reduced, and then improved and aimed at efficiency.
In a further preferred embodiment, the multichannel parallel bidirectional device coupling apparatus further includes a beam splitter for reflecting the first optical signal and transmitting the second optical signal. Through setting up the spectroscope, realized the differentiation of the light signal of two kinds of wavelength for two kinds of light signals can be through an optical fiber transmission, simplify the structure of device.
In a further optimized scheme, the first lens array is an L-shaped structure, the beam splitter is obliquely arranged on the first lens array and is bridged across two surfaces of the first lens array, so that the two surfaces face the beam splitter, the first optical signal is incident to the beam splitter through one surface, and is incident to the other surface after being reflected by the beam splitter. The angle of the first optical signal incident to the two surfaces is not 90 degrees. The angle of the first optical signal incident to the two surfaces is not 90 degrees, so that reflection caused by vertical incidence can be avoided, and further reflected light interference can be avoided.
Compared with the prior art, the coupling device provided by the invention has the advantages that the two lens arrays are arranged, and the transmitting end device and the receiving end device which are respectively used for arranging the optical signals with one wavelength are respectively arranged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an 8-channel parallel bidirectional device coupling apparatus in the prior art.
Fig. 2 is a schematic structural diagram of a coupling device of a multi-channel parallel bidirectional device in an embodiment of the invention.
In the drawings, reference numerals
A substrate 10; a first lens array 20; a first face 21; a second face 22; a first cavity 23; a second lens array 30; a reflection surface 31; an incident surface 32, a second cavity 33; a beam splitter 40; a laser driver 51; a laser diode 52; a photodiode 61; a transimpedance amplifier 62; an optical fiber 70.
Detailed Description
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, the present embodiment schematically provides a multi-channel parallel bidirectional device coupling apparatus, which includes a first lens array 20 and a second lens array 30, wherein the first lens array 20 is used to arrange a transmitting end device and a receiving end device of a first optical signal, and the second lens array 30 is used to arrange a transmitting end device and a receiving end device of a second optical signal. The first optical signal and the second optical signal have different wavelengths, and generally, the wavelength of the first optical signal is 850nm, and the wavelength of the second optical signal is 910 nm; or the first optical signal has a wavelength of 910nm and the second optical signal has a wavelength of 850 nm. As shown in fig. 2, the first lens array 20 and the second lens array 30 include not only lenses (indicated by thick curves in the drawing) but also a support body supporting the lenses. In this embodiment, the support and the lens are made of the same material and are integrally formed by a mold, and therefore, the thick curve shown in fig. 2 can be understood as a lens curved surface.
More specifically, as shown in fig. 2, the first lens array 20 is an L-shaped structure, and the beam splitter 40 is obliquely disposed on the first lens array 20 and spans two surfaces of the first lens array 20. For convenience of description, the two surfaces are referred to as a first surface 21 and a second surface 22, the first surface 21 and the second surface 22 both face the beam splitter 40, and the first optical signal is incident to the beam splitter 40 through the first surface 21 and is incident to the second surface 22 after being reflected by the beam splitter 40. The second lens array 30 is a triangular (cube) structure, the second lens array 30 provides a reflection surface 31 and an incident surface 32, the second optical signal transmitted by the beam splitter 40 is incident on the incident surface 32, and the reflection surface 31 is used for reflecting the second optical signal, so that the second optical signal is received by the receiving end device.
In a preferred design, the angles of the first optical signal incident on the first surface 21 and the second surface 22 are both different from 90 degrees, so as to avoid the interference caused by the reflection of the first optical signal. Generally, the first optical signal is horizontally incident, and therefore, in order to realize that the first optical signal is not vertically incident to the first surface 21 and the second surface 22, both the first surface 21 and the second surface 22 are inclined surfaces. Similarly, the second optical signal transmitted from the beam splitter 40 enters the entrance surface 32 of the second lens array 30 in a state of not 90 degrees, and is reflected by the reflection surface 31 of the second lens array 30, and then is received by the receiving device of the second optical signal in a state of not 90 degrees.
The first lens array 20 and the second lens array 30 are both arranged on the substrate 10, a first cavity 23 is formed between the first lens array 20 and the substrate 10, the transmitting end device and the receiving end device of the first optical signal are both arranged in the first cavity 23, a second cavity 33 is formed between the second lens array 30 and the substrate 10, and the transmitting end device and the receiving end device of the second optical signal are both arranged in the second cavity 33. The transmitting-side device of the first optical signal includes a laser diode 52 and a laser driver 51, and the receiving-side device of the first optical signal includes a photodiode 61 and a transimpedance amplifier 62. The transmitting-side device of the second optical signal includes a laser diode 52 and a laser driver 51, and the receiving-side device of the second optical signal includes a photodiode 61 and a transimpedance amplifier 62. The number of channels is determined by the application and the number of LD/PDs, for example, if a lens array has only one LD and PD, it is called two channels. In addition, the first lens array 20 can be used alone in single-mode long parallel transmission applications.
The first lens array 20 is provided with a connection port, the connection port aligns with the optical fiber 70 and the lens, the connection port is connected with the optical fiber 70, and the first optical signal and the second optical signal are both input and output to the first lens array 20 through the optical fiber 70.
In the coupling device of the multichannel parallel bidirectional device, the optical signal transmission process is as follows:
the transmission process of the first optical signal: the first optical signal is emitted by the first optical signal emitting end device, and after being collimated by the lens (indicated by the second thick curve from left to right in fig. 2), the first optical signal is transmitted by the second surface 22, then enters the beam splitter 40, is reflected by the beam splitter 40, then enters the first surface 21, is converged by the lens (indicated by the first thick curve from left to right in fig. 2), enters the optical fiber 70, and is transmitted by the optical fiber 70.
The receiving process of the first optical signal: the first optical signal is incident on the first surface 21 through the optical fiber 70, is incident on the beam splitter 40 after being transmitted through the first surface 21, is incident on the second surface 22 after being reflected by the beam splitter 40, and is received by the receiving end device of the second optical signal after being transmitted through the second surface 22.
And the transmission process of the second optical signal: the second optical signal is emitted by the second optical signal emitting end device, and after being collimated by a lens (represented by a third thick curve from left to right in fig. 2), the second optical signal is reflected by the reflection surface 31 of the second lens array 30 to the incident surface 32 of the second lens array 30, transmitted by the incident surface 32, then incident to the beam splitter 40, transmitted by the beam splitter 40, then incident to the first surface 21 of the first lens array 20, and then transmitted out by the optical fiber 70.
The receiving process of the second optical signal: the second optical signal is incident on the first surface 21 through the optical fiber 70, is incident on the beam splitter 40 after being transmitted through the first surface 21, is incident on the incident surface 32 of the second lens array 30 after being transmitted through the beam splitter 40, is incident on the reflective surface 31 of the second lens array 30 after being transmitted through the incident surface 32, and is received by the receiving end device of the second optical signal after being reflected through the reflective surface 31.
In the above-mentioned multichannel parallel bidirectional device coupling device, the first lens array 20 only needs to realize the alignment between the transmitting end device and the receiving end device of the first optical signal, and the second lens array 30 only needs to realize the alignment between the transmitting end device and the receiving end device of the second optical signal, therefore, compared with a lens array which must realize the receiving and transmitting alignment of two optical signals, the alignment difficulty in the scheme is greatly reduced, and then the alignment process is simpler, the efficiency is lower, thereby the assembling speed of the multichannel parallel bidirectional device coupling device can be greatly improved, and the production efficiency is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (12)
1. A multi-channel parallel bidirectional device coupling device is characterized by comprising a first lens array and a second lens array, wherein the first lens array is used for arranging a transmitting end device and a receiving end device of a first optical signal, the second lens array is used for arranging a transmitting end device and a receiving end device of a second optical signal, and the wavelengths of the first optical signal and the second optical signal are different; the first lens array and the second lens array comprise lenses and a support body for supporting the lenses, and the support body and the lenses are made of the same material and are integrally formed.
2. The multi-channel parallel bi-directional device coupling apparatus of claim 1, further comprising a beam splitter for reflecting the first optical signal and transmitting the second optical signal.
3. The coupling device of claim 2, wherein the first lens array is an L-shaped structure, the beam splitter is obliquely disposed on the first lens array and spans two surfaces of the first lens array, so that the two surfaces face the beam splitter, the first optical signal is incident on the beam splitter through one surface, and is incident on the other surface after being reflected by the beam splitter.
4. The device of claim 3, wherein the angle at which the first optical signal is incident on both faces is not 90 degrees.
5. The device of claim 4, wherein both surfaces of the first lens array facing the beam splitter are beveled.
6. The multi-channel parallel bi-directional device coupling apparatus of claim 1, wherein the first lens array is provided with a connection port to which an optical fiber is connected for transmitting the first optical signal and the second optical signal.
7. The coupling device of claim 3, wherein the first lens array and the second lens array are both disposed on the substrate, a first cavity is formed between the first lens array and the substrate, the transmitting end device and the receiving end device of the first optical signal are both disposed in the first cavity, a second cavity is formed between the second lens array and the substrate, and the transmitting end device and the receiving end device of the second optical signal are both disposed in the second cavity.
8. The multi-channel parallel bi-directional device coupling apparatus as claimed in claim 2, wherein the second lens array provides a reflective surface for reflecting the second optical signal such that the second optical signal is received by the receiving end device or incident to the beam splitter.
9. The multi-channel parallel bi-directional device coupling apparatus as claimed in claim 8, wherein the second optical signal transmitted from the beam splitter is incident on the incident surface of the second lens array at a state of non-90 degrees.
10. The multi-channel parallel bi-directional device coupling apparatus of claim 1, wherein the first optical signal transmitting side device comprises a laser diode and a laser driver, and the first optical signal receiving side device comprises a photodiode.
11. The multi-channel parallel bidirectional device coupling apparatus of claim 1, wherein the transmitting end device of the second optical signal comprises a laser diode and a laser driver, and the receiving end device of the second optical signal comprises a photodiode and a transimpedance amplifier.
12. The multi-channel parallel bi-directional device coupling apparatus of claim 1, wherein the first optical signal has a wavelength of 850nm and the second optical signal has a wavelength of 910 nm; or the first optical signal has a wavelength of 910nm and the second optical signal has a wavelength of 850 nm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/100401 WO2021026774A1 (en) | 2019-08-13 | 2019-08-13 | Multichannel parallel bidirectional device coupling apparatus |
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| CN110651212A CN110651212A (en) | 2020-01-03 |
| CN110651212B true CN110651212B (en) | 2021-11-30 |
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| CN201980001401.XA Active CN110651212B (en) | 2019-08-13 | 2019-08-13 | Multichannel parallel bidirectional device coupling device |
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| WO (1) | WO2021026774A1 (en) |
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| WO2022267805A1 (en) * | 2021-06-22 | 2022-12-29 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204405900U (en) * | 2014-12-25 | 2015-06-17 | 武汉电信器件有限公司 | A kind of parallel light transceiver component of multi-wavelength multiplex/demultiplexing |
| CN105629404A (en) * | 2016-04-08 | 2016-06-01 | 四川华拓光通信股份有限公司 | Coupling lens device applied to vertical cavity surface emitting laser |
| CN106291834A (en) * | 2015-05-22 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | Optical communication apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201502618A (en) * | 2013-07-09 | 2015-01-16 | Hon Hai Prec Ind Co Ltd | Optical coupling module and photoelectric conversion device |
| CN109828335A (en) * | 2017-11-23 | 2019-05-31 | 海思光电子有限公司 | A kind of optical coupled module and electronic equipment |
| CN208547749U (en) * | 2018-07-29 | 2019-02-26 | 广东瑞谷光网通信股份有限公司 | The double luminous road systems of double receipts of single fiber |
| CN110045468B (en) * | 2019-04-30 | 2021-02-02 | 武汉华工正源光子技术有限公司 | Single-fiber bidirectional optical coupling assembly |
-
2019
- 2019-08-13 WO PCT/CN2019/100401 patent/WO2021026774A1/en active Application Filing
- 2019-08-13 CN CN201980001401.XA patent/CN110651212B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204405900U (en) * | 2014-12-25 | 2015-06-17 | 武汉电信器件有限公司 | A kind of parallel light transceiver component of multi-wavelength multiplex/demultiplexing |
| CN106291834A (en) * | 2015-05-22 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | Optical communication apparatus |
| CN105629404A (en) * | 2016-04-08 | 2016-06-01 | 四川华拓光通信股份有限公司 | Coupling lens device applied to vertical cavity surface emitting laser |
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| CN110651212A (en) | 2020-01-03 |
| WO2021026774A1 (en) | 2021-02-18 |
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