Optical module and adjusting method of working temperature of laser thereof

Abstract

The invention discloses an optical module and an adjusting method of a working temperature of a laser thereof. The method comprises determining a current environment temperature according to an obtained temperature value after a micro controller unit (MCU) in the optical module obtains the temperature value detected by a temperature sensor; determining a working temperature set value corresponding to the current environment temperature and a BIAS current set value; controlling a driving circuit to output corresponding BIAS current according to the determined working temperature set value; and controlling a thermoelectric cooler (TEC) control circuit to adjust the working temperature of the laser to be a corresponding temperature according to the determined working temperature set value. Due to the facts that the working temperature of the laser is allowed to be changed correspondingly along with the environment temperature within a certain range and BIAS current adjustment is simultaneously adopted to serve as a compensation means to enable optical power and extinction ratio to be constant, the difference between the working temperature of the laser and the environment temperature is reduced, heating or refrigeration current provided for a TEC is reduced, and the goal of reducing power consumption is achieved.

Description

technical field [0001] The invention relates to optical fiber communication technology, in particular to an optical module and a method for adjusting the working temperature of a laser. Background technique [0002] In recent years, with the rapid development of enhanced 8.5G Fiber Channel and 10G Ethernet high-speed optical network protocols, the demand for ultra-high-speed optical transceiver modules is increasing, and the requirements for module port density and power consumption are also increasing . [0003] In the past few years, the 10Gbit / s optical transceiver module has experienced from 300pin MSA, XENPAK (10 Gigabit Ethernet), XPAK, X2, XFP (10 Gigabit Ethernet optical transceiver module) to SFP (Gigabit Ethernet optical transceiver module) + transformation. As an upgraded version of SFP, SFP+ conforms to IEEE 802.3AE / AQ and 8G / 10G Fiber Channel protocol specifications. Compared with XFP, the module size is reduced by 40%, and it has higher port density and lower...

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Problems solved by technology

[0007] However, the inventors of the present invention have found that the optical module of the prior art needs to supply the TEC built in the laser for cooling or heating when it is in a high temperature or low temperature environment, for example, in a high temperature environment above 60°C or a low temperature environment below 5°C. The current is very large, resulting in a large power consumption of the optical module in the full temperature range

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