Dual-rate DML device with built-in signal calibration circuit, module and signal calibration method

Abstract

The invention relates to a dual-rate DML device, a module and a calibration method, which belongs to the technical field of optical communication. The invention particularly relates to the dual-rate DML device with a built-in signal calibration circuit, the module and the calibration method. According to the invention, the signal calibration circuit is added into the device; PD pre-configuration is realized through a novel spectral structure; the control structure of a sequence-sharing multi-channel serial signal is used to feed back a monitoring signal to an electric drive to adjust drive current; the problem of crosstalk between backlight monitoring is reduced; and high-quality signal output under 25Gbps and 28Gbps dual modulation frequency is realized.

Description

technical field [0001] The invention relates to a dual-rate DML device, a module and a calibration method, belonging to the technical field of optical communication, and in particular to a dual-rate DML device, a module and a calibration method with a built-in signal calibration circuit. Background technique [0002] With the continuous improvement of global bandwidth demand, the continuous expansion of optical communication industry applications such as data centers and security monitoring, and the large-scale construction of backbone networks and access networks, the optical module industry has ushered in new market opportunities. Especially in recent years, with the rise of cloud computing, video applications, Internet games, social networking and other applications, Internet traffic has doubled exponentially, and routers for the "100G platform" are gradually replacing the original 10G status and becoming a new Core Network. This has become an important driving force for...

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Problems solved by technology

[0004] However, since the modulation signal of the DML laser is directly applied to the laser chip, the changing input current will cause the output characteristics of the laser chip to deteriorate. The higher the frequency of the change, the more obvious the deterioration. In the era before 40G and 40G, this Degradation does not affect the transmission and extraction of signals, but in the era of 100G, the impact of this degradation on signal transmission and extraction cannot be ignored

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