Laser transceiving device, manufacturing method thereof and method for improving temperature operation range thereof

Abstract

The invention discloses a laser transceiving device, a manufacturing method thereof and a method for improving temperature operation range thereof. A low-cost laser transmitter module TOSA (transmitter optical subassembly) is utilized to broaden the temperature operation range of laser transceiving integration modules of a small form-factor pluggable transceiver (SFP) or an SFP+ and the like, and a heater and a laser diode are packaged and integrated in the TOSA of a TO-CAN. Operation temperature of the SFP+ laser transceiving module is monitored by integrating a temperature sensor on a circuit board of the SFP+, or operation temperature of a TOSA laser is calculated by detecting bias current and output power of the laser, the heater in the TOSA positioned on the laser transceiving module is controlled through a heat control circuit and software, the software starts the control circuit and supplies power to the heater to heat the laser diode if the detected temperature is lower than a set threshold, and the software switches off the control circuit to stop heating the laser diode if the detected temperature is higher than the set threshold.

Description

technical field [0001] The invention relates to optical fiber communication technology, in particular to a small laser transceiver device, its manufacturing method and a method for improving its temperature operating range. The small laser transceiver device is specifically a small form-factor pluggable transceiver (SFP) and SFP+ with temperature monitoring function and temperature control of a laser diode packaged in a Transmitter Optical Subassembly (TOSA). and other optical transceiver integrated modules. Background technique [0002] With the wide application of optical fiber communication technology in backbone network, city area network, local area network, data center and wireless network communication, it conforms to SFP+MSA standard (SFF-8431 Specifications for Enhanced Small Form Factor Pluggable Module SFP+, Revision 4.1, 6th of July 2009 ) Low-cost and relatively easy-to-manufacture Small Pluggable Optical Transceiver Module (SFP+) has become more and more pop...

AI Technical Summary

Problems solved by technology

However, this method requires complex design and requires a very complex manufacturing process to integrate many additional components on the optical base in TO-CAN, thus increasing the cost and power consumption of TOSA and SFP

[0009] However, none of the above methods considered the overall optical transceiver module, and failed to make full use of the existing conditions of the module to design a low-cost, easy-to-manufacture integrated transceiver module that can work in a wider temperature range.

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