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Proceedings Paper

Implementation and validation of a CubeSat laser transmitter
Author(s): R. W. Kingsbury; D. O. Caplan; K. L. Cahoy
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Paper Abstract

The paper presents implementation and validation results for a CubeSat-scale laser transmitter. The master oscillator power amplifier (MOPA) design produces a 1550 nm, 200mW average power optical signal through the use of a directly modulated laser diode and a commercial fiber amplifier. The prototype design produces high-fidelity M-ary pulse position modulated (PPM) waveforms (M=8 to 128), targeting data rates > 10 Mbit/s while meeting a constraining 8W power allocation. We also present the implementation of an avalanche photodiode (APD) receiver with measured transmitter-to-receiver performance within 3 dB of theory. Via loopback, the compact receiver design can provide built-in self-test and calibration capabilities, and supports incremental on-orbit testing of the design.

Paper Details

Date Published: 15 March 2016
PDF: 8 pages
Proc. SPIE 9739, Free-Space Laser Communication and Atmospheric Propagation XXVIII, 973905 (15 March 2016); doi: 10.1117/12.2217990
Show Author Affiliations
R. W. Kingsbury, Planet Labs, Inc. (United States)
Massachusetts Institute of Technology (United States)
D. O. Caplan, MIT Lincoln Lab. (United States)
K. L. Cahoy, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 9739:
Free-Space Laser Communication and Atmospheric Propagation XXVIII
Hamid Hemmati; Don M. Boroson, Editor(s)

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