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Proceedings Paper

Highly reliable and efficient 1.5μm-fiber-MOPA-based, high-power laser transmitter for space communication
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Paper Abstract

Fibertek has developed a space qualifiable, highly efficient, high power (<5W), fiber based 1.5um laser optical module (LOM). The transmitter achieves 6W average and <1kW peak power out of a 2m long single mode delivery fiber with 8nsec pulses and <6Ghz linewidth. Stimulated Brillouin Scattering (SBS) is managed by precise linewidth control and by use of LMA gain fiber in the power stage while maintaining the required diffraction limited, and highly polarized (PER<20dB) output. Size and weight of the built LOM are 8”x10”x2.375” and 3 kg, respectively. With improvements in the modulation scheme and component specification, achieved LOM electrical to optical efficiency is over 17.0%. Highly efficient operation is sustained for a wide range of pulse-position modulation (16 to 128-ary PPM) formats with pulse widths varying from 8nsec to 0.5nsec and operation temperature 10-50C. Pressure stress analysis, random vibration analysis and thermal analysis of the designed LOM predicts compliance with NASA GEVS levels for vibration and thermal cycling in a vacuum environment. System will undergo both thermal vacuum and vibration testing to validate the design.

Paper Details

Date Published: 9 June 2014
PDF: 7 pages
Proc. SPIE 9081, Laser Technology for Defense and Security X, 90810G (9 June 2014); doi: 10.1117/12.2050496
Show Author Affiliations
Doruk Engin, Fibertek, Inc. (United States)
Slava Litvinovitch, Fibertek, Inc. (United States)
Frank Kimpel, Fibertek, Inc. (United States)
Kent Puffenberger, Fibertek, Inc. (United States)
Xung Dang, Fibertek, Inc. (United States)
Jean-Luc Fouron, Fibertek, Inc. (United States)
Nigel Martin, Fibertek, Inc. (United States)
Mark Storm, Fibertek, Inc. (United States)
Shantanu Gupta, Fibertek, Inc. (United States)
Rich Utano, Fibertek, Inc. (United States)

Published in SPIE Proceedings Vol. 9081:
Laser Technology for Defense and Security X
Mark Dubinskii; Stephen G. Post, Editor(s)

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