CN210347999U - Multichannel optical transceiver module - Google Patents
Multichannel optical transceiver module Download PDFInfo
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- CN210347999U CN210347999U CN201921553171.1U CN201921553171U CN210347999U CN 210347999 U CN210347999 U CN 210347999U CN 201921553171 U CN201921553171 U CN 201921553171U CN 210347999 U CN210347999 U CN 210347999U
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Abstract
The utility model relates to an optical communication field, concretely relates to light transceiver module of multichannel. The optical transceiver module comprises an optical transmitting unit; a light receiving unit; the optical signal monitoring unit is used for monitoring the optical power of the optical signal emitted by the optical emission unit; the planar optical waveguide is used for transmitting optical signals and is provided with a plurality of paths of optical waveguides; the light emitting unit, the light receiving unit and the optical signal monitoring unit are respectively coupled with the planar optical waveguide and realize the transmission of optical signals through the corresponding optical waveguides. The utility model discloses a setting up the planar waveguide who is used for transmitting optical signal, with light emission unit, light receiving unit and light signal monitoring unit respectively with planar waveguide coupling connection, realize optical signal's transmission through the optical waveguide, with the transmission of optical signal, receive and the control integration of light power together, reduce light transceiver module's volume and size greatly, make light transceiver module further miniaturized.
Description
Technical Field
The utility model relates to an optical communication field, concretely relates to light transceiver module of multichannel.
Background
With the rapid development of information technology and communication networks, high speed, large bandwidth, low power consumption and low cost are targets for the development of optical communication. The higher the speed requirement of the optical module, the smaller the device size requirement, and the higher the signal transmission requirement.
Optical transceiver modules are important devices in the field of optical communications. The traditional optical path of the transceiver is independent into two parts, and the occupied volume and the size are large, so that the miniaturization design of the optical transceiver module is not facilitated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a light transceiver module of multichannel, it occupies volume and size big to overcome current light transceiver module, is unfavorable for the problem of its miniaturized design.
The utility model provides a technical scheme that its technical problem adopted is: provided is a multi-channel optical transceiver module, including:
a light emitting unit;
a light receiving unit;
the optical signal monitoring unit is used for monitoring the optical power of the optical signal emitted by the optical emission unit; the planar optical waveguide is used for transmitting optical signals and is provided with a plurality of paths of optical waveguides;
the light emitting unit, the light receiving unit and the optical signal monitoring unit are respectively coupled with the planar optical waveguide and realize the transmission of optical signals through the corresponding optical waveguides.
The utility model discloses a further preferred scheme is: the light emitting unit comprises a laser chip, the light receiving unit comprises a PD chip, the light receiving and transmitting module further comprises a base provided with a transmitting driving signal bonding pad and a receiving driving signal bonding pad, the laser chip is welded with the transmitting driving signal bonding pad, and the PD chip is welded with the receiving driving signal bonding pad.
The utility model discloses a further preferred scheme is: the optical transceiver module further comprises an optical fiber array coupled with the planar optical waveguide, wherein the optical fiber array transmits an external optical signal to the optical receiving unit through the planar optical waveguide and outputs an optical signal transmitted by the optical transmitting unit through the planar optical waveguide.
The utility model discloses a further preferred scheme is: the planar optical waveguide comprises two end faces with an angle of 0-8 degrees, a first optical waveguide array and a second optical waveguide array, wherein the two end faces are communicated and used for transmitting optical signals, one end of the first optical waveguide array is connected with a light emitting unit, the other end of the first optical waveguide array is connected with an optical fiber array and an optical signal monitoring unit respectively, and the second optical waveguide array is connected with the light emitting unit and the optical fiber array respectively.
The utility model discloses a further preferred scheme is: the first optical waveguide array is of an N-x-2N waveguide array structure and is respectively connected with the light emitting unit, the optical signal monitoring unit and the optical fiber array, and the second optical waveguide array is of an N-x-N waveguide array structure and is respectively connected with the light receiving unit and the optical fiber array.
The utility model discloses a further preferred scheme is: the base comprises one of a PCB board and a heat dissipation substrate.
The utility model discloses a further preferred scheme is: the optical signal monitoring unit comprises a plurality of monitoring photodiodes which are correspondingly coupled with one waveguide of the second optical waveguide array.
The utility model discloses a further preferred scheme is: the optical fiber array is an array optical fiber connector.
The utility model discloses a further preferred scheme is: the light emitting unit, the light receiving unit and the optical signal monitoring unit are respectively coupled and connected with the planar optical waveguide through glue adhesion.
The beneficial effects of the utility model reside in that, compared with the prior art, through setting up the planar lightwave circuit that is used for transmitting the light signal, it is equipped with multichannel optical waveguide, with light emission unit, light receiving unit and light signal monitoring unit respectively with planar lightwave circuit coupling connection, realize the transmission of light signal through corresponding optical waveguide, with the transmission of light signal, receive and the control of light power integrated together, reduce the volume and the size of light transceiver module greatly, make light transceiver module further miniaturized; and the laser chip is welded with the pad for transmitting the driving signal, and the PD chip is welded with the pad for receiving the driving signal, so that the capacitance introduced by a gold wire is reduced, the influence of the connection mode of the laser chip and the PD chip with the corresponding pads on the signal is reduced, and the quality and the bandwidth of the signal are improved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural diagram of a multi-channel optical transceiver module according to the present invention;
fig. 2 is a schematic diagram of an optical path in the multi-channel optical transceiver module of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides a preferred embodiment of a multi-channel optical transceiver module.
A multi-channel optical transceiver module comprising:
a light emitting unit 10;
a light receiving unit 20;
an optical signal monitoring unit 30 for monitoring the optical power of the optical signal emitted by the optical emission unit 10; and
the planar optical waveguide 40 is used for transmitting optical signals, and the planar optical waveguide 40 is provided with multiple paths of optical waveguides;
the light emitting unit 10, the light receiving unit 20 and the optical signal monitoring unit 30 are respectively coupled with the planar optical waveguide 40 and implement optical signal transmission through the corresponding optical waveguides.
The light emitting unit 10, the light receiving unit 20 and the light signal monitoring unit 30 are respectively coupled with the planar optical waveguide 40 by arranging the planar optical waveguide 40 for transmitting the light signals, the transmission of the light signals is realized by the respective corresponding optical waveguides, and the emission, the reception and the monitoring of the light power of the light signals are integrated together.
The light emitting unit 10, the light receiving unit 20 and the optical signal monitoring unit 30 are coupled to the planar optical waveguide 40 by adhesive bonding.
In this embodiment, the light emitting unit 10 includes a laser chip, the light receiving unit 20 includes a PD chip, the optical transceiver module further includes a base 50 having a transmission driving signal pad 51 and a reception driving signal pad 52, the laser chip is welded to the transmission driving signal pad 51, and the PD chip is welded to the reception driving signal pad 52. Compared with the existing mode that the laser chip and the transmission driving signal bonding pad 51 and the PD chip and the reception driving signal bonding pad 52 are connected through gold wires, the laser chip and the transmission driving signal bonding pad 51 are directly welded, the PD chip and the reception driving signal bonding pad 52 are directly welded, the capacitance introduced by a gold wire is reduced, the influence on signals can be reduced, and the quality and the bandwidth of the signals are improved.
The base 50 is provided with corresponding circuits for generating a transmitting driving signal and a receiving driving signal, and the transmitting driving signal is transmitted to the laser chip through the transmitting driving signal pad 51 to drive the laser chip to transmit a light signal, and the receiving driving signal is transmitted to the PD chip through the receiving driving signal pad 52 to drive the PD chip to receive a light signal.
Further, the optical transceiver module further includes an optical fiber array 60 coupled to the planar optical waveguide 40, where the optical fiber array 60 transmits an external optical signal to the optical receiving unit 20 through the planar optical waveguide 40, and outputs an optical signal transmitted through the planar optical waveguide 40 by the optical transmitting unit 10.
Wherein, the optical signal emitted by the laser chip is transmitted to the optical fiber array 60 through the planar optical waveguide 40, and is output by the optical fiber of the optical fiber array 60; external optical signals are transmitted to the planar optical waveguide 40 through the optical fibers of the optical fiber array 60, and the planar optical waveguide 40 transmits the optical signals to the optical receiving unit 20, so that uploading and downloading of the optical signals are realized.
In this embodiment, the planar optical waveguide 40 includes two end surfaces 41 with an angle of 0-8 °, and a first optical waveguide array 42 and a second optical waveguide array 43 that communicate the two end surfaces 41 and are used for transmitting optical signals, one end of the first optical waveguide array 42 is connected to the light emitting unit 10, the other end is connected to the optical fiber array 60 and the optical signal monitoring unit 30, and the second optical waveguide array 43 is connected to the light emitting unit 10 and the optical fiber array 60. The angles of the two end faces 41 are set to 0-8 degrees, so that light reflection can be prevented. Specifically, both end faces 41 of the planar optical waveguide 40 may be set to be 0 ° or 8 °. Two end faces 41, that is, an end face 41 coupled with the light emitting unit 10 and the light receiving unit 20, and an end face 41 coupled with the optical fiber array 60.
The first optical waveguide array 42 is an N × 2N waveguide array structure and is respectively connected to the light emitting unit 10, the optical signal monitoring unit 30, and the optical fiber array 60, and the second optical waveguide array 43 is an N × N waveguide array structure and is respectively connected to the light receiving unit 20 and the optical fiber array 60. N is a positive integer.
Specifically, the optical signal emitted by the optical transmitting unit 10 is transmitted through the first optical waveguide array 42, and is divided into two optical signals, one of the optical signals is transmitted to the optical fiber array 60 and output by the optical fiber array 60, the other is transmitted to the optical signal monitoring unit 30, and the optical signal monitoring unit 30 monitors the optical power of the input optical signal. The external optical signal is transmitted to the second optical waveguide array 43 through the optical fiber array 60, and is transmitted to the light receiving unit 20 from the second optical waveguide array 43.
In this embodiment, the base 50 includes one of a PCB board and a heat dissipation substrate. Preferably, the base 50 includes a heat-dissipating substrate. Set up transmission drive signal pad 51 and receipt drive signal pad 52 on the radiating basal plate, with laser instrument chip and transmission drive signal pad 51 welding, the PD chip with receive drive signal pad 52 welding, compare with connecting through the gold thread, reduce the electric capacity of gold wire introduction, reduce the influence to the signal, when improving the quality and the bandwidth of signal, light transceiver module's heat conductivility is good, and the radiating effect is good.
Further, the optical signal monitoring unit 30 includes a plurality of monitoring photodiodes 31 coupled to a waveguide of the second optical waveguide array 43. The monitor photodiode 31 receives the optical signal transmitted by the waveguides of the second optical waveguide array 43, and monitors the optical power of the optical signal.
The second optical waveguide array 43 is an N × 2N waveguide array structure, optical signals emitted by the light emitting unit 10 are input from N input ports of the second optical waveguide array 43, after light splitting is performed in the second optical waveguide array 43, a part of the optical signals is transmitted to the monitoring photodiode 31 corresponding to each of the N waveguides through the N waveguides to perform optical power monitoring, and another part of the optical signals is transmitted to the optical fiber array 60 through the N waveguides which are branched separately and then output.
Further, the optical fiber array 60 is an array optical fiber connector. The array optical fiber connector can realize coupling connection with the waveguide array and connection with an external optical device, and is convenient to assemble and operate.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. A multi-channel optical transceiver module, comprising:
a light emitting unit;
a light receiving unit;
the optical signal monitoring unit is used for monitoring the optical power of the optical signal emitted by the optical emission unit; and
the planar optical waveguide is used for transmitting optical signals and is provided with a plurality of paths of optical waveguides;
the light emitting unit, the light receiving unit and the optical signal monitoring unit are respectively coupled with the planar optical waveguide and realize the transmission of optical signals through the corresponding optical waveguides.
2. The optical transceiver module of claim 1, wherein the light emitting unit includes a laser chip, the light receiving unit includes a PD chip, the optical transceiver module further includes a base provided with a transmission driving signal pad and a reception driving signal pad, the laser chip is bonded to the transmission driving signal pad, and the PD chip is bonded to the reception driving signal pad.
3. The optical transceiver module of claim 1 or 2, further comprising an optical fiber array coupled to the planar optical waveguide, wherein the optical fiber array transmits an external optical signal to the optical receiving unit via the planar optical waveguide, and outputs an optical signal transmitted via the planar optical waveguide by the optical transmitting unit.
4. The optical transceiver module of claim 3, wherein the planar optical waveguide comprises two end surfaces with an angle of 0-8 °, and a first optical waveguide array and a second optical waveguide array that communicate the two end surfaces for transmitting optical signals, one end of the first optical waveguide array is connected to the optical transmitter unit, the other end is connected to the optical fiber array and the optical signal monitor unit, and the second optical waveguide array is connected to the optical transmitter unit and the optical fiber array.
5. The optical transceiver module of claim 4, wherein the first optical waveguide array is an N x 2N waveguide array structure and is connected to the optical transmitter unit, the optical signal monitor unit and the optical fiber array, respectively, and the second optical waveguide array is an N x N waveguide array structure and is connected to the optical receiver unit and the optical fiber array, respectively.
6. The optical transceiver module of claim 2, wherein the base comprises one of a PCB board, a heat sink substrate.
7. The optical transceiver module of claim 5, wherein the optical signal monitoring unit comprises a plurality of monitoring photodiodes coupled to a waveguide of the second optical waveguide array.
8. The optical transceiver module of claim 3, wherein the array of optical fibers is an array fiber optic connector.
9. The optical transceiver module of claim 1, wherein the optical transmitter unit, the optical receiver unit and the optical signal monitor unit are coupled to the planar optical waveguide by adhesive bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921553171.1U CN210347999U (en) | 2019-09-18 | 2019-09-18 | Multichannel optical transceiver module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921553171.1U CN210347999U (en) | 2019-09-18 | 2019-09-18 | Multichannel optical transceiver module |
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| CN210347999U true CN210347999U (en) | 2020-04-17 |
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| CN201921553171.1U Active CN210347999U (en) | 2019-09-18 | 2019-09-18 | Multichannel optical transceiver module |
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Cited By (2)
| 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 |
| WO2022123604A1 (en) * | 2020-12-10 | 2022-06-16 | Lightspeedai Labs Private Limited | A system and method for enabling optical channels for high-speed communication |
-
2019
- 2019-09-18 CN CN201921553171.1U patent/CN210347999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022123604A1 (en) * | 2020-12-10 | 2022-06-16 | Lightspeedai Labs Private Limited | A system and method for enabling optical channels for high-speed communication |
| 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: 518000 No. 35, Cuijing Road, Pingshan New District, Shenzhen, Guangdong Patentee after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Patentee before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |