A transmitter of a multi-channel coherent optical communication device and the multi-channel coherent optical communication device

Abstract

The invention provides a transmitting terminal of a multi-channel coherent light communication device and a multi-channel coherent light communication device. The transmitting terminal comprises a substrate, a multi-channel light digital signal processor, and a multi-channel modulator module, wherein the multi-channel light digital signal processor is arranged on the substrate, and the multi-channel modulator module is arranged on the substrate; the transmitting terminal further comprises a packaging layer which packages the multi-channel light digital signal processor and the multi-channel modulator module on the substrate, wherein the multi-channel modulator module comprises a modulator which is connected with each channel of the multi-channel light digital signal processor in a one-to-one correspondence mode. According to the technical scheme, the transmitting terminal in the multi-channel coherent light communication device is used as a whole device; compared with the prior art ofadopting one transmitting terminal and one transmitting terminal to form a device, the size of the module can be greatly reduced under the condition of obtaining the same bit rate, so that the transmission capacity of the single board is improved; moreover, the transmitting terminal is independently packaged, the optical crosstalk and the radio frequency crosstalk between the transmitting terminals are reduced compared with the mixed packaging with transmitting and receiving together.

Description

technical field [0001] The present application relates to the field of information technology, and in particular, to a transmitter of a multi-channel coherent optical communication device and a multi-channel coherent optical communication device. Background technique [0002] With the increase of network system traffic, the communication system needs to increase the transmission capacity of the system under the condition that the rack volume remains unchanged, thereby realizing high-density transmission. By reducing the size of the module, such as the use of CFP (C form-factor pluggable, 100G-shaped pluggable), CFP2 and CFP4 into optical modules, the data rate per unit volume can be improved. For line-side optical modules, modules using coherent technology can support longer transmission distances due to the use of DSP (digital signal processing, optical digital signal processing) algorithm chips to compensate for dispersion, etc. Typically 100Gbits per second. [0003] Th...

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Problems solved by technology

[0004] However, in the above solution, in order to meet the Tbit rate requirements of a single line card in the future, multiple modules can be placed on a single line card. If the data rate of each module is 100G bits, only 10 modules can meet the Tbit rate of a single board. need

Since each coherent optical module (DCO, Digital coherent optics) needs to use a DSP chip, the overall power consumption of the module is increased compared with the non-coherent client-side module. Therefore, when the number of modules increases, the heat dissipation capacity of the single board is difficult to meet need

At the same time, the power consumption cost of the computer room is also an important part of the operator's operating cost, so it will further increase the operator's cost

At the same time, most of the existing coherent modules use single-channel optical devices and electrical devices, and the device itself and the DSP chip are not packaged together, so it is difficult to achieve multi-channel small size and low power consumption

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