Optical transmission device based on high-speed coherence

Abstract

The utility model discloses an optical transmission device based on high-speed coherence. The optical transmission device comprises a white light conversion module, a coherent light conversion module, a multiplexing / demultiplexing module, an optical power control module and an optical path selection module, a white light conversion module, a coherent light conversion module and a wave combining and dividing module are arranged, the white light conversion module converts multiple paths of 400G white light optical signals of a client side into multiple paths of electric signals, the coherent light conversion module converts the multiple paths of electric signals into multiple paths of 400G coherent light signals, and the wave combining and dividing module combines the multiple paths of 400G coherent light signals into one path of new 400G coherent light signals. The multi-path white light of the client side can be converted into one path of synthesized coherent light, and the capacity is greatly improved, so that the defect of low capacity caused by the fact that one path of white light of the client side can only be converted and output one path of coherent light in the prior art is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of optical transmission, in particular to an optical transmission device based on high-speed coherence. Background Art

[0002] With the rapid development of optical communications, the number of Internet users, types of applications, network bandwidth, etc. have shown explosive growth. The development of point-to-point (P2P) technology, online video, social networking, and mobile Internet is constantly consuming network bandwidth. At the same time, the rapid development of cloud computing, big data and other technologies, and cloud networks with super data centers as the core, have more urgent bandwidth requirements. Carriers and service providers are applying and deploying 400G high-speed optical transmission devices on a large scale. However, the existing 400G high-speed optical transmission devices can only realize the conversion of one client-side white light output to one coherent light, resulting in relatively low capacity and affecting optical transmission efficiency. Utility Model Content

[0003] In view of this, the utility model proposes an optical transmission device based on high-speed coherence, which can solve the defect of the prior art that one channel of white light on the client side can only be converted and output into one channel of coherent light, resulting in low capacity.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A high-speed coherent optical transmission device includes a white light conversion module, a coherent optical conversion module, a wavelength combining and demultiplexing module, an optical power control module and an optical path selection module, wherein the white light conversion module is used to receive multiple 400G white light optical signals from a client side, and convert the multiple 400G white light optical signals from the client side into multiple electrical signals, the coherent optical conversion module is used to receive multiple electrical signals, and convert the multiple electrical signals into multiple 400G coherent optical signals, the wavelength combining and demultiplexing module is used to receive multiple 400G coherent optical signals, and synthesize the multiple 400G coherent optical signals into a new 400G coherent optical signal, the optical power control module is used to receive the new 400G coherent optical signal, and enhance or attenuate the optical power of the new 400G coherent optical signal, and the optical path selection module is used to select the new 400G coherent optical signal after the transmission port in a normal working state outputs the enhanced or attenuated optical power.

[0006] As a further optional solution of the high-speed coherent optical transmission device, the white light conversion module QSFP28-DD chip and its peripheral circuits.

[0007] As a further optional solution of the high-speed coherent optical transmission device, the coherent optical conversion module includes a QSFP28-DD-1X4 chip and its peripheral circuits.

[0008] As a further optional solution of the high-speed coherent optical transmission device, the optical power control module adopts an EDFA module.

[0009] As a further optional solution of the high-speed coherent optical transmission device, the optical path selection module HEADER2x16 chip and its peripheral circuits.

[0010] As a further optional solution for the high-speed coherent optical transmission device, the device also includes a monitoring module, which is used to monitor the working status of the white light conversion module, coherent light conversion module, wavelength combination and decomposition module, optical power control module and optical path selection module.

[0011] As a further optional solution of the high-speed coherent optical transmission device, the monitoring module includes an MCU chip and its peripheral circuits.

[0012] The beneficial effects of the present invention are as follows: by setting a white light conversion module, a coherent light conversion module and a wavelength combining and demultiplexing module, the white light conversion module converts multiple 400G white light signals on the client side into multiple electrical signals, the coherent light conversion module converts multiple electrical signals into multiple 400G coherent optical signals, and the wavelength combining and demultiplexing module synthesizes multiple 400G coherent optical signals into one new 400G coherent optical signal, which can convert multiple white lights on the client side into one synthesized coherent light, greatly improving the capacity, thereby effectively solving the defect of the prior art that one channel of white light on the client side can only be converted and output as one channel of coherent light, resulting in low capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the composition of a high-speed coherent optical transmission device of the utility model;

[0015] Figure 2 This is a circuit diagram of the white light conversion module in the utility model;

[0016] Figure 3 This is a circuit diagram of the coherent light conversion module in the utility model;

[0017] Figure 4 This is a circuit diagram of the optical power control module in the utility model;

[0018] Figure 5This is a circuit diagram of the optical path selection module in the utility model;

[0019] Figure 6 It is a circuit diagram of the monitoring module in the utility model. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] refer to Figure 1-6 , a high-speed coherent optical transmission device, including a white light conversion module, a coherent optical conversion module, a wavelength combining and demultiplexing module, an optical power control module and an optical path selection module, wherein the white light conversion module is used to receive multiple 400G white light optical signals from a client side, and convert the multiple 400G white light optical signals from the client side into multiple electrical signals, the coherent optical conversion module is used to receive multiple electrical signals, and convert the multiple electrical signals into multiple 400G coherent optical signals, the wavelength combining and demultiplexing module is used to receive multiple 400G coherent optical signals, and synthesize the multiple 400G coherent optical signals into a new 400G coherent optical signal, the optical power control module is used to receive the new 400G coherent optical signal, and enhance or attenuate the optical power of the new 400G coherent optical signal, and the optical path selection module is used to select the new 400G coherent optical signal after the transmission port in a normal working state outputs the enhanced or attenuated optical power.

[0022] In this embodiment, by setting a white light conversion module, a coherent light conversion module and a wavelength combining and demultiplexing module, the white light conversion module converts multiple 400G white light signals on the client side into multiple electrical signals, the coherent light conversion module converts multiple electrical signals into multiple 400G coherent optical signals, and the wavelength combining and demultiplexing module synthesizes multiple 400G coherent optical signals into a new 400G coherent optical signal, which can convert multiple white lights on the client side into one synthesized coherent light, greatly improving the capacity, thereby effectively solving the defect of the prior art that one channel of white light on the client side can only be converted and output as one channel of coherent light, resulting in low capacity.

[0023] It should be noted that the wave combining and decomposing module is a prior art and will not be described in detail in this patent.

[0024] Preferably, the white light conversion module is a QSFP28-DD chip and its peripheral circuits.

[0025] Preferably, the coherent optical conversion module includes a QSFP28-DD-1X4 chip and its peripheral circuits.

[0026] Preferably, the optical power control module adopts an EDFA module.

[0027] Preferably, the optical path selection module is a HEADER2x16 chip and its peripheral circuits.

[0028] Specifically, the 400G white light signal on the client side is converted into eight 56G electrical signals through the 400G_QDD white light conversion module. The eight electrical signals are directly connected to the 400G_QDD coherent optical conversion module on the line side. The 400G_QDD coherent optical conversion module converts the eight electrical signals into multiple 400G coherent lights. The 400G coherent lights (sending and receiving) are connected to the wavelength combination and demultiplexing module. The wavelength combination and demultiplexing module can combine the light of up to 12 channels. The combined coherent light is connected to the EDFA optical power control module, and the optical power can be enhanced or attenuated through the EDFA optical power control module. The enhanced or attenuated 400G coherent optical path is connected to the OLP optical path selection module. The OLP optical path selection module splits one coherent light into a main and backup path to play a protective role. When there is a problem with the main path, it can switch to the backup path to continue working. Finally, the OLP main and backup path ports output one coherent light, and the 12 white lights on the client side are finally converted into one 12-wavelength synthetic coherent light, which greatly improves the capacity.

[0029] Preferably, the device further comprises a monitoring module, and the monitoring module is used to monitor the working status of the white light conversion module, the coherent light conversion module, the wavelength combining and decomposing module, the optical power control module and the optical path selection module.

[0030] Preferably, the monitoring module includes an MCU chip and its peripheral circuits.

[0031] In this embodiment, by setting up a monitoring module, the monitoring module can read and access relevant data of the white light conversion module, the coherent light conversion module, the wavelength combining and splitting module, the optical power control module and the optical path selection module. By reading these data through the network management, the performance of the business communication can be monitored in real time and corrections can be made in time.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed coherent optical transmission device, characterized in that: It includes a white light conversion module, a coherent light conversion module, a wavelength combining and decomposing module, an optical power control module and an optical path selection module. The white light conversion module is used to receive multiple 400G white light signals from the client side and convert the multiple 400G white light signals from the client side into multiple electrical signals. The coherent light conversion module is used to receive multiple electrical signals and convert the multiple electrical signals into multiple 400G coherent optical signals. The wavelength combining and decomposing module is used to receive multiple 400G coherent optical signals and synthesize the multiple 400G coherent optical signals into a new 400G coherent optical signal. The optical power control module is used to receive the new 400G coherent optical signal and enhance or attenuate the optical power of the new 400G coherent optical signal. The optical path selection module is used to select the new 400G coherent optical signal after the transmission port in normal working state outputs the enhanced or attenuated optical power.

2. The high-speed coherent optical transmission device according to claim 1, characterized in that: The white light conversion module QSFP28-DD chip and its peripheral circuits.

3. The high-speed coherent optical transmission device according to claim 2, characterized in that: The coherent optical conversion module includes a QSFP28-DD-1X4 chip and its peripheral circuits.

4. The high-speed coherent optical transmission device according to claim 3, characterized in that: The optical power control module adopts an EDFA module.

5. The high-speed coherent optical transmission device according to claim 4, characterized in that: The optical path selection module HEADER2x16 chip and its peripheral circuits.

6. The high-speed coherent optical transmission device according to claim 1 or 5, characterized in that: The device also includes a monitoring module, which is used to monitor the working states of the white light conversion module, the coherent light conversion module, the wavelength combining and decomposing module, the optical power control module and the optical path selection module.

7. The high-speed coherent optical transmission device according to claim 6, characterized in that: The monitoring module includes an MCU chip and its peripheral circuits.

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