Colorless dense wavelength division multiplexing access network optical line terminal optical module

Abstract

The invention discloses a colorless dense wavelength division multiplexing access network optical line terminal optical module, comprising eight optical modules, wherein a miniature QSFP+ or CFP4 package form is employed, and four-channel transmission and four-channel receiving are integrated in a single optical module. The colorless dense wavelength division multiplexing access network optical line terminal optical module comprises an MCU main control unit, and a downlink channel laser array unit, a downlink channel laser array drive unit, an uplink channel photoelectric detector array unit, an uplink channel limiting amplifier unit and an optical fiber ribbon unit which are connected with the MCU main control unit. The colorless dense wavelength division multiplexing access network optical line terminal optical module belongs to a new type miniature WDM OLT optical module. The module package form is the miniature QSFP+ or CFP4 package form. Only one kind of modules is employed. Four-channel transmission and four-channel receiving are integrated in the single optical module. Eight wavelengths can be configured in each channel. 32-channel coverage can be realized through the eight optical modules. The module miniaturization and standard package are realized. The colorless dense wavelength division multiplexing access network optical line terminal optical module is simple and is easy to maintain. The cost is low.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a colorless optical module method applied to an optical module of a WDM PON optical line terminal. Background technique [0002] At present, in the WDM PON system, the DWDM wavelength will be used between the OLT and the ONU to realize multi-channel parallel point-to-point transmission. For the traditional WDM PON OLT optical module, its emission wavelength will be fixed wavelength. If you want to achieve full-band coverage, you will need 32 different lasers. If you consider the 4-channel integrated CFP4 package or QSFP+ package, you need at least 8 different optical modules, OLT with fixed wavelength will result in a wide variety of laser chips and modules, and high operation and maintenance costs. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a colorles...

AI Technical Summary

Problems solved by technology

For traditional WDM PON OLT optical modules, the emission wavelength will be fixed. If full-band coverage is to be achieved, 32 different lasers will be required. If the 4-channel integrated CFP4 package or QSFP+ package is considered, at least 8 different optical modules, OLT with a fixed wavelength will result in a wide variety of laser chips, a wide variety of modules, and high operation and maintenance costs

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