A kind of multifunctional ld drive circuit, module and method

Abstract

The invention relates to the field of optical communication, and specifically relates to a multifunctional LD driving circuit, module and method. In optical communication, a second signal is loaded to a first signal to form a compound signal, and the first signal, second signal or compound signal transmission functions are switched by controlling LD drives of the second signal and the first signal respectively. The signal transmission of multiple functions can be realized through different functions of the first signal and the second signal, and three functions can be realized in an optical module: converting a normal communication electrical signal into an optical signal; converting a line monitoring electrical signal into an optical signal, loading the optical signal to a communication signal and synchronously transmitting the optical signal and the communication signal to an optical fiber; and realizing the function of an OTDR (Optical Time Domain Reflectometry). Compared with the line detection realized via an external professional OTDR tool in the prior art, the multifunctional LD driving circuit, module and method have the advantages that the line connection is simple, the implementation cost is low, the detection is timelier and the like, and thus have a broad application prospect in optical communication.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a multifunctional LD ​​driving circuit, module and method. Background technique [0002] At present, the development of communication technology has provided a steady stream of impetus and acceleration for the development of society and people's living standards, and information technology has provided a lasting source of energy for people's life and social progress. Communication technology has always been developing towards higher speed, larger capacity and smaller size. [0003] Optical communication, with its unparalleled advantages: strong anti-interference, high confidentiality, long relay distance, large communication capacity, rich raw material resources, low cost, small size and light weight, has become the key to the application and development of the entire communication technology. . At present, the application of optical communication technology has reached an ...

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Problems solved by technology

[0006] However, at present, the fault diagnosis method is realized through a special OTDR tool. The OTDR equipment used is expensive, and the circuit structure is complicated when used, and it is impossible to monitor and detect the fault in real time, so it cannot be detected in the shortest time when the fault occurs. Internal judgment and positioning, and then take maintenance measures in time to troubleshoot and restore normal communication

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