Laser transmitter assembly for the Optical Communication Demonstrator

Hamid Hemmati; David J. Copeland

doi:10.1117/12.184654

16 August 1994 Laser transmitter assembly for the Optical Communication Demonstrator

Hamid Hemmati, David J. Copeland

Proceedings Volume 2123, Free-Space Laser Communication Technologies VI; (1994) https://doi.org/10.1117/12.184654
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

A modulated fiber-coupled diode laser assembly has been developed. This module will serve as the laser transmitter assembly for the Optical Communication Demonstrator (OCD) system. The laser is capable of greater than 20 mW of output at 100 Mbps Q-PPM modulation. It consists of a high-speed driver, a controller to maintain output amplitude under varying duty cycles, and a temperature controller to control output wavelength. The driver provides over 280 mA of peak modulation current with an optical pulse risetime of approximately 1 ns. The switching speed is limited by the inductance of the laser mount and the cable connecting the driver to the mount. The laser is coupled to a single-mode polarization preserving fiber that can feed directly into the telescope assembly of OCD.

Citation Download Citation

Hamid Hemmati and David J. Copeland "Laser transmitter assembly for the Optical Communication Demonstrator", Proc. SPIE 2123, Free-Space Laser Communication Technologies VI, (16 August 1994); https://doi.org/10.1117/12.184654

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