High-speed receiving and transmitting integrated multi-channel optical engine

Abstract

The utility model relates to the technical field of optical communication, and provides a high-speed transmit-receive integrated multichannel optical engine, which comprises a shell and an LC optical fiber adapter, a light transmitting assembly and a light receiving assembly are arranged in the shell, the LC optical fiber adapter is provided with an optical interface with both a light inlet and a light outlet, and the LC optical fiber adapter is provided with a light inlet and a light outlet. A first light beam emitted by the light emitting assembly enters the light interface, and a second light beam entering from the light interface enters the light receiving assembly. According to the high-speed receiving and transmitting integrated multichannel optical engine, the optical transmitting assembly and the optical receiving assembly are arranged in the shell, and the LC optical fiber adapter is provided with a transmitting port and a receiving port, so that the wiring cost of optical fibers and cables is reduced, the size of an optical module is reduced, the number of optical devices and the packaging process are reduced, and the production efficiency is improved. And the reliability is higher.

Description

Technical Field

[0001] This utility model relates to the field of optical communication technology, specifically a high-speed transceiver integrated multi-channel optical engine. Background Technology

[0002] With the rapid development of technologies such as cloud computing, big data, and artificial intelligence, the demand for high-speed networks in data centers is increasing daily. Multi-channel high-speed optical modules can provide high-speed data transmission capabilities, meeting the connectivity needs between servers and storage devices within data centers, as well as the communication needs between data centers in different geographical locations. With the transition from 5G to 6G, multi-channel high-speed optical modules will provide high-speed data connections between mobile network base stations.

[0003] Most existing high-speed multi-channel optical modules have two optical interfaces (one for transmission and one for reception). First, this increases the cost of fiber optic cable cabling. Second, the overall size of the optical module is larger, and the number of optical components and packaging processes are more numerous, increasing reliability risks. Utility Model Content

[0004] The purpose of this invention is to provide a high-speed transceiver integrated multi-channel optical engine, which can at least solve some of the defects in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-speed transceiver integrated multi-channel optical engine, including a housing and an LC fiber optic adapter. The housing is provided with an optical emitting component and an optical receiving component. The LC fiber optic adapter has an optical interface that serves as both an input and output light source. A first light beam emitted by the optical emitting component enters the optical interface, and a second light beam entering through the optical interface enters the optical receiving component.

[0006] Furthermore, the housing is also equipped with an optical circulator. The first beam enters the optical interface after passing through the optical circulator, and the second beam enters the optical receiving component after being deflected by 90 degrees by the optical circulator.

[0007] Furthermore, a first focusing lens for focusing the first beam is provided between the optical circulator and the optical interface.

[0008] Furthermore, the optical emitting component includes a laser array for emitting multiple first beams, a collimating lens array for collimating each first beam, and a Z-Block for combining each first beam, wherein the laser array, the collimating lens array, and the Z-Block are arranged sequentially along the optical path direction.

[0009] Furthermore, the light emitting component also includes a deflection prism, and the laser array has eight lasers. The eight first beams are combined into two beams by the Z-Block, and one of the beams is deflected and converged into a single beam by the deflection prism.

[0010] Furthermore, both the laser array and the collimating lens array are disposed on a ceramic substrate.

[0011] Furthermore, the laser array is electrically connected to the pads on the PCB board.

[0012] Furthermore, the optical receiving component includes a reflector for deflecting the second beam, a second focusing lens for focusing the second beam, an AWG chip for converting the optical signal into an electrical signal, and a TIA chip for receiving the electrical signal. The AWG chip integrates a PD, and the reflector, the second focusing lens, the AWG chip, and the TIA chip are arranged sequentially along the optical path direction.

[0013] Furthermore, the TIA chip is mounted on a ceramic pad.

[0014] Furthermore, the TIA chip is electrically connected to the pads on the PCB board.

[0015] Compared with the prior art, the beneficial effects of this utility model are: a high-speed transceiver integrated multi-channel optical engine, by setting optical transmitting and receiving components in the housing, and using an LC fiber optic adapter that serves as both a transmitting port and a receiving port, not only reduces the cost of fiber optic cable wiring, but also reduces the size of the optical module, and also reduces the number of optical devices and packaging processes, resulting in higher reliability. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a high-speed transceiver integrated multi-channel optical engine provided for an embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the optical path of a high-speed transceiver integrated multi-channel optical engine provided for an embodiment of this utility model (solid line is the first beam, dashed line is the second beam);

[0018] Figure 3 A power-on schematic diagram of a high-speed transceiver integrated multi-channel optical engine provided for an embodiment of this utility model;

[0019] In the attached diagram, the following labels are used: 1-LC fiber optic adapter; 2-housing; 3-first focusing lens; 4-optical circulator; 5-conversion prism; 6-Z-block; 7-ceramic substrate; 8-collimating lens; 9-laser array; 10-ceramic pad; 11-TIA chip; 12-AWG chip; 13-second focusing lens; 14-reflector; 15-PCB board. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1 and Figure 2 This utility model provides a high-speed transceiver integrated multi-channel optical engine, including a housing 2 and an LC fiber optic adapter 1. The housing 2 houses an optical transmitting component and an optical receiving component. The LC fiber optic adapter 1 has an optical interface that serves as both an input and output light source. A first light beam emitted by the optical transmitting component enters the optical interface, and a second light beam entering through the optical interface enters the optical receiving component. In this embodiment, by housing the optical transmitting and receiving components within the housing 2, and using a single LC fiber optic adapter 1 serving as both a transmitting and receiving port, the cost of fiber optic cable cabling is reduced, the size of the optical module is decreased, and the number of optical devices and packaging processes are also reduced, resulting in higher reliability. Preferably, the housing 2 also houses an optical circulator 4. The first light beam enters the optical interface after passing through the optical circulator 4, and the second light beam enters the optical receiving component after being deflected 90 degrees by the optical circulator 4. This optical circulator 4 is an existing device. Preferably, a first focusing lens 3 for focusing the first light beam is also provided between the optical circulator 4 and the optical interface. Specifically, the LC fiber optic adapter 1 serves as an optical interface, functioning as both a transmitter and receiver. This means that both received and transmitted light must pass through this optical interface, thus reducing the number of optical ports and making the device smaller. The housing 2 is a metal tubular shell that encapsulates the internal components.

[0022] Please see Figure 1 , Figure 2 and Figure 3The aforementioned optical emitting component further comprises a laser array 9 for emitting multiple first beams, a collimating lens array 8 for collimating each first beam, and a Z-Block 6 for combining the first beams. The laser array 9, the collimating lens array 8, and the Z-Block 6 are arranged sequentially along the optical path. The optical emitting component can be considered the emitting end. After the laser array 9 is electrically connected to the pads on the PCB board, an external PCB interface can load an electrical signal onto the laser array 9. The laser array 9 converts the electrical signal into an optical signal and outputs it. The collimating lens array 8 then collimates the diverging light, and the Z-Block 6 combines the beams. In this embodiment, eight lasers are used, therefore the Z-Block 6 has eight channels. The Z-Block 6 can combine eight beams of different wavelengths into two. One of these beams is refracted by a turning prism 5, converging the two beams into one. This then passes through an optical circulator 4 and is output to the optical fiber of the LC fiber optic adapter 1 by the first focusing lens 3. The turning prism 5 can be coated with a filter film (selecting transmission or reflection for different wavelengths). Using eight channels allows for a greater number of channels and a higher overall speed for the optical engine.

[0023] For further optimization of the above solution, please refer to [link / reference]. Figure 1 and Figure 2 Both the laser array 9 and the collimating lens array 8 are disposed on the ceramic substrate 7. In this embodiment, being disposed on the ceramic substrate 7 is beneficial for heat dissipation.

[0024] Please see Figure 1 , Figure 2 and Figure 3The optical receiving component includes a reflector 14 for deflecting the second light beam, a second focusing lens 13 for focusing the second light beam, an AWG chip 12 for converting the optical signal into an electrical signal, and a TIA chip 11 for receiving the electrical signal. The AWG chip 12 integrates a photodiode (PD). The reflector 14, the second focusing lens 13, the AWG chip 12, and the TIA chip 11 are arranged sequentially along the optical path. In this embodiment, the optical receiving component can typically be implemented using a wavelength division multiplexer, an array lens, a reflecting prism, and a PD. However, this would involve a large number of such components. This embodiment uses an AWG chip 12 with an integrated PD, plus a second focusing lens 13, which can still achieve the function of receiving light, while also reducing the number of components, simplifying the process, and reducing the device size. The TIA chip 11, AWG chip 12, and PD in this embodiment are all existing devices and will not be described in detail here. Specifically, at the optical receiver, the light emitted from the optical fiber passes through the LC fiber optic adapter 1, is collimated by the first focusing lens 3, then deflected by 90 degrees by the optical circulator 4, and then deflected again by 90 degrees by the reflector 14. Next, the beam is focused and coupled to the AWG chip 12 by the second focusing lens 13. The AWG chip 12 converts the optical signal into an electrical signal, which is then input to the TIA chip 11. The TIA chip 11 amplifies and processes the electrical signal before outputting it to the external PCB interface. The TIA chip 11 is mounted on a ceramic pad 10 for heat dissipation and is electrically connected to the pads on the PCB board for power application.

[0025] This completes the refinement of the optical engine, achieving technical benefits such as more channels, higher transmission rates, fewer optical ports, smaller size, fewer components, simpler manufacturing process, lower costs, and higher reliability.

[0026] During the assembly of the optical engine, the optical circulator 4, the deflection prism 5, the Z-Block 6, the ceramic substrate 7, the ceramic pad 10, the AWG chip 12, and the reflector 14 are attached. Then, the metal housing, the laser array 9, and the TIA chip 11 are attached. Next, the TIA chip 11 and the AWG chip 12 are connected by gold wire bonding, and the laser of the laser array 9 is connected by gold wire bonding to the ceramic substrate 7. Then, the LC fiber adapter 1 is welded to the metal housing. Then, the laser array 9 and the TIA chip 11 are powered by probes respectively. After being accommodated, the first focusing lens 3 and the second focusing lens 13 are coupled simultaneously to ensure that the receiver responsivity and the transmitter low optical power meet the requirements. Then, the collimating lens 8 is coupled to ensure that the transmitter optical power meets the requirements. Finally, after baking, initial testing, temperature cycling, and final testing, the assembly is completed.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed transceiver integrated multi-channel optical engine, characterized in that: The device includes a housing and an LC fiber optic adapter. The housing contains an optical emitting component and an optical receiving component. The LC fiber optic adapter has an optical interface that serves as both an input and output light source. A first light beam emitted by the optical emitting component enters the optical interface, and a second light beam entering through the optical interface enters the optical receiving component.

2. The high-speed transceiver integrated multi-channel optical engine as described in claim 1, characterized in that: The housing is also equipped with an optical circulator. The first beam enters the optical interface after passing through the optical circulator, and the second beam enters the optical receiving component after being deflected by 90 degrees by the optical circulator.

3. The high-speed transceiver integrated multi-channel optical engine as described in claim 2, characterized in that: A first focusing lens for focusing the first beam is also provided between the optical circulator and the optical interface.

4. The high-speed transceiver integrated multi-channel optical engine as described in claim 1, characterized in that: The optical emitting component includes a laser array for emitting multiple first beams, a collimating lens array for collimating each first beam, and a Z-Block for combining each first beam. The laser array, the collimating lens array, and the Z-Block are arranged sequentially along the optical path.

5. A high-speed transceiver integrated multi-channel optical engine as described in claim 4, characterized in that: The light emitting component also includes a deflection prism. The laser array has eight lasers. The eight first beams are combined into two beams by the Z-Block. One of the beams is deflected by the deflection prism and converged into a single beam.

6. A high-speed transceiver integrated multi-channel optical engine as described in claim 4, characterized in that: Both the laser array and the collimating lens array are mounted on a ceramic substrate.

7. A high-speed transceiver integrated multi-channel optical engine as described in claim 4, characterized in that: The laser array is electrically connected to the pads on the PCB board.

8. A high-speed transceiver integrated multi-channel optical engine as described in claim 1, characterized in that: The optical receiving component includes a reflector for deflecting the second beam, a second focusing lens for focusing the second beam, an AWG chip for converting optical signals into electrical signals, and a TIA chip for receiving the electrical signals. The AWG chip integrates a PD. The reflector, the second focusing lens, the AWG chip, and the TIA chip are arranged sequentially along the optical path.

9. A high-speed transceiver integrated multi-channel optical engine as described in claim 8, characterized in that: The TIA chip is mounted on a ceramic pad.

10. A high-speed transceiver integrated multi-channel optical engine as described in claim 8, characterized in that: The TIA chip is electrically connected to the pads on the PCB board.

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