Laser transmitter assembly for the Optical Communication Demonstrator

Details Laser transmitter assembly for the Optical Communication Demonstrator Laser transmitter assembly for the Optical Communication Demonstrator

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2123..283h&link_type=abstract

Proc. SPIE Vol. 2123, p. 283-291, Free-Space Laser Communication Technologies VI, G. Stephen Mecherle; Ed.

Physics

Scientific paper

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.

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