McDermott Will & Emery LLP
Optical transmitting module having a can type package and providing a temperature sensor therein
The present invention provides an optical transmitting module capable of outputting a signal for precisely controlling bias and modulation current, and a transmitting optical sub-assembly using the same. The optical transmitting module of the invention builds a semiconductor laser diode 5 and a temperature sensor within a CAN type package. The CAN type package includes a base, a block provided on the base and mounting the laser diode on a side thereof, and a plurality of leads secured to the base. The laser diode is supplied current signal SDRV through one of leads, while the temperature sensor outputs a signal STEMP through the other of leads. The temperature sensor is mounted immediately close to the laser diode, accordingly, capable of monitoring the temperature of the laser diode.
Sumitomo Electric Industries, Ltd.
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Hisao Akihiro Toshiaki Eiji Kiyoshi
Go Moto Kihara Tsumura Kato