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Proceedings Paper

Short-wavelength (1010-1030nm) Yb-fiber-MOPA-based multi-aperture high-power uplink laser beacons for space communication
Author(s): Doruk Engin; Wei Lu; Frank Kimpel; Shantanu Gupta
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Paper Abstract

KW level fiber based MOPA laser system at 1018-1024nm for uplink deep space communication is developed and characterized. System achieves 5kW peak power (300W average power) with >75% optical conversion efficiency at 1024nm. Experiments with 9-ary PPM pulse format at 500 kHz are presented. Pattern dependent pulse energy variation <10% is achieved using pulse pre-shaping algorithm. Lower PRF performance of the system where ASE accumulation along MOPA chain results in reduction in efficiency is characterized. Excellent agreement is established between dynamic fiber MOPA simulation tool and experimental results in predicting pulse shapes and ASE accumulation. Using the simulation tool robust MOPA performance is predicted at 500W, 500 kHz (16-ary PPM ) for the current system with minor component improvements. Simulation tool is also shown to be well suited for quantifying statistical performance of open loop pulse shape correction algorithms.

Paper Details

Date Published: 22 February 2012
PDF: 9 pages
Proc. SPIE 8246, Free-Space Laser Communication Technologies XXIV, 82460K (22 February 2012); doi: 10.1117/12.909656
Show Author Affiliations
Doruk Engin, Fibertek, Inc. (United States)
Wei Lu, Fibertek, Inc. (United States)
Frank Kimpel, Fibertek, Inc. (United States)
Shantanu Gupta, Fibertek, Inc. (United States)

Published in SPIE Proceedings Vol. 8246:
Free-Space Laser Communication Technologies XXIV
Hamid Hemmati; Don M. Boroson, Editor(s)

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