an optical module

Abstract

The embodiment of the invention provides an optical module and relates to the field of optical communication. The optical module comprises a laser device, a driving circuit, a semiconductor amplifier and a fiber adapter. The laser device is used for continuously emitting laser; the driving circuit provides time-sequence forward or reverse current for the semiconductor amplifier; the semiconductor amplifier receives the laser emitted by the laser device and is driven by the time-sequence forward or reverse current to amplify or block the laser emitted by the laser device; the fiber adapter receives the laser output by the semiconductor amplifier. The optical module achieves communication between an optical network unit (ONU) and an optical line terminal (OLT) in a time-division mode, meanwhile, maintains temperature stability of the laser device of the optical network unit and further maintains the wavelength stability of the laser emitted by the laser device.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an optical module. Background technique [0002] Optical fiber network is a broadband connection network commonly used at present. figure 1 It is a schematic diagram of an optical fiber network structure in the prior art. Such as figure 1 As shown, the optical network unit ONU is usually installed at the user end, and the user's computer compute, intelligent device smart device and other Internet access devices are connected to the wide area network through the optical network unit ONU to realize network browsing. [0003] Optical network unit The connection between the optical network unit ONU and the wide area network WAN is realized through the relay of the optical line terminal. The optical network unit has an optical module, and the laser in the optical module sends an optical signal to the optical line terminal, and the communication between the optical network unit ...

AI Technical Summary

Problems solved by technology

The temperature change of the laser itself will cause the wavelength of the light emitted by the laser to change, which is not conducive to the transmission of optical signals.

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