Patent ID: 9705602
Date: 2017-07-11
CPC Classifications: H01S,H04B

Claim:
1. An optical transmission module, which is configured to input differential signals comprising a positive-phase signal and a negative-phase signal, the optical transmission module comprising: a laser oscillator configured to output laser light; an optical modulator configured to modulate the laser light based on the positive-phase signal; a negative-phase terminating resistor configured to terminate the negative-phase signal; a Peltier device comprising a first region and a second region in which heat is exchanged; a substrate mounted to the first region so that heat is conducted to the first region; and a package which is hermetically sealed and in which at least the laser oscillator, the optical modulator, the negative-phase terminating resistor, the Peltier device, and the substrate are arranged, wherein the laser oscillator and the optical modulator are mounted on the substrate so that heat is conducted to the first region, and wherein the negative-phase terminating resistor is arranged outside of the substrate so as to avoid conduction of heat to the first region.