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Proceedings Paper

1.5-micron MOPA deep space downlink transmitter
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Paper Abstract

There is demand for improved deep-space satellite communications links with increased data rates to accommodate new sensor technologies and increased sensor payloads on spacecraft. It is imperative that new solutions be compact in size, light in weight, be high speed, and highly power efficient. Optical links offer potential improvements in power, size and weight due to a substantially narrower beam and smaller components. Solutions using fiber-laser transmitter master-oscillator power-amplifiers (MOPA) have been investigated previously, but methods for improving the system power efficiency are needed. In this paper we will present recent results for a 1.5um fiber MOPAs for deep-space communications. A high-power, broad linewidth 1550 nm seed laser is combined with 3 stages of amplification. Each of these stages is partially designed based on the availability of the various components An amplifier operating at 1532 nm in principle has the advantage of commercial off-the-shelf components with demonstrated reliability though the availability of high power broad area pump diodes at 1532nm with good efficiency is limited. The final power amplifier stage was constructed using both step index fiber (SIF) and photonic crystal fiber (PCF).

Paper Details

Date Published: 22 February 2012
PDF: 6 pages
Proc. SPIE 8246, Free-Space Laser Communication Technologies XXIV, 82460J (22 February 2012); doi: 10.1117/12.909444
Show Author Affiliations
Donald L. Sipes, Optical Engines, Inc. (United States)
Jason D. Tafoya, Optical Engines, Inc. (United States)
Daniel S. Schulz, Optical Engines, Inc. (United States)
Benjamin G. Ward, U.S. Air Force Academy (United States)
Chad G. Carlson, U.S. Air Force Academy (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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