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27 May 1998 Comparison of coherent detection and optically preamplified receivers
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Ideal detection techniques for laser communication are briefly reviewed. Laser communication systems using homodyne Manchester BPSK (MBPSK) and optically preamplified (OP) DPSK are compared on the basis of receiver sensitivity, temporal, spatial, and hardware requirements. It is found that a reduction of optical parts count at the receiver and a reduction in prime power also accompany the 3 dB benefit of homodyne. This occurs, however, at the expense of a more complex, although likely off-the-shelf, local oscillator laser and a doubling of the required signal bandwidth.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Stephen Mecherle "Comparison of coherent detection and optically preamplified receivers", Proc. SPIE 3266, Free-Space Laser Communication Technologies X, (27 May 1998);

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