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Proceedings Paper

Fiber-MOPA based multi-kW uplink laser beacons for deep-space communication links
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Paper Abstract

KW level fiber based MOPA laser system at 1064nm for uplink deep space communication is developed and characterized. System achieves 11.5 kW peak power (600W average power) at 500 kHz (5% duty cycle) with >70% optical conversion efficiency. Experiments using 16-ary PPM format are presented where without pre-pulse shaping >±60% pulse energy variation is observed. Gain dynamics is identified as main source of pulse to pulse energy fluctuation. Novel, FPGA implementable open loop pulse shaping algorithm is developed and demonstrated. Resulting pulse energy statistics are reported, where <±7% pulse energy variation is achieved for 90% of pulses.

Paper Details

Date Published: 21 February 2011
PDF: 10 pages
Proc. SPIE 7923, Free-Space Laser Communication Technologies XXIII, 79230D (21 February 2011); doi: 10.1117/12.875784
Show Author Affiliations
Doruk Engin, Fibertek, Inc. (United States)
Wei Lu, Fibertek, Inc. (United States)
Frank Kimpel, Fibertek, Inc. (United States)
Youming Chen, Fibertek, Inc. (United States)
Mehmetcan Akbulut, Fibertek, Inc. (United States)
Shantanu Gupta, Fibertek, Inc. (United States)

Published in SPIE Proceedings Vol. 7923:
Free-Space Laser Communication Technologies XXIII
Hamid Hemmati, Editor(s)

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