Optical transceiver capable of controlling self-heating according to temperature

摘要

Disclosed is an optical transceiver capable of controlling self-heating according to temperature, more particularly, an optical transceiver which uses a PTC heater suitable for temperature characteristics to easily control self-heating. A PTC heater of which the self-resistance changes depending on the ambient temperature of uncooled laser diodes of an optical transceiver so as to adjust heating volume of the heater, is applied to a TO CAN, thus making it possible to significantly reduce power consumption while expanding an available temperature range of existing optical modules, even without a separate controller or using a minimum number of control circuits.

主权项

1. An optical transceiver for controlling self-heating according to temperature, comprising:
a receiver optical sub-assembly; a transmitter optical sub-assembly, including:
a laser diode;a plurality of lead pins;a stem body which is coupled with the laser diode and between the laser diode and the lead pins; a positive temperature co-efficient (PTC) heater which is coupled with the stem body to be self-heated; a laser driving unit which drives the laser diode, and an input/output port coupled to the receiver optical sub-assembly and the transmitter optical sub-assembly; wherein the stem body and the PTC heater are coupled with each other by means of a plurality of holes provided in the PTC heater and the lead pins inserted into the holes of the PTC heater.