1 April 1988 Wideband Laser Diode Transmitter For Free-Space Communication
Author Affiliations +
An AIGaAs laser transmitter has been developed that dichroically combines six single-mode 830 nm laser diodes in a 100 A total band-pass. Single-mode operation of each diode is necessitated by the 20 A diode-to-diode channel spacing. An external etalon is utilized for each laser diode to maintain single-mode operation (greater than 25 dB side mode suppression) in the presence of wideband modulation [1000 mega-pulses per second (Mpps)]. A universal header accommodates diodes from various manufacturers and includes an impedance-matching net-work as well as a thermistor and heater for diode closed-loop temperature control. Diffraction-limited optics are used to maximize the combined beam far-field irradiance for free-space applications. A 218 urad output beam with less than 1.05:1 ellipticity was measured for the combined output.
Robert J. Smith, William L. Casey, David L. Begley, "Wideband Laser Diode Transmitter For Free-Space Communication," Optical Engineering 27(4), 274344 (1 April 1988). https://doi.org/10.1117/12.7976679


Diode lasers for interferometric length measurements
Proceedings of SPIE (January 31 2013)
Laser drivers for free-space optical communication
Proceedings of SPIE (July 01 1990)
Commercial applications of high-powered laser diodes
Proceedings of SPIE (April 28 1995)
Wideband Lasercom Transmitter Performance
Proceedings of SPIE (May 15 1986)
Semiconductor laser transmitters for WDM
Proceedings of SPIE (May 01 1996)

Back to Top