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Adaptive Optics for the Atmospheric Coherent Optical Communications
Imaging and Applied Optics 2015, 2015We present the results that the mixing efficiency and the bit-error-rate of the atmospheric coherent optical communications improved by a real 127-actuators adaptive optics system operating on 1550nm wavelength on a 1.8m telescope.
Chao Liu +4 more
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Coherent optical space communications
2006This paper reviews the present state of concepts and technologies of coherent optical space communications. Emphasis is placed on the receiving segment. Heterodyne and homodyne reception allows to realize sensitivities close to the theoretical limits which amount to as little as 10 to 40 photons per bit.
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Coherent optical fiber communications system using all-optical correlation processing
Optics Letters, 1990We propose a point-to-point or single-ended communications technique based on single-mode optical fibers that uses all-optical pulse multiplexing at the transmitter and coherent optical correlation at the receiver. This technique shows potential for application to secure untappable communications, fiber local-area networks, and optical ranging in the ...
D D, Sampson, D A, Jackson
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Electro-optic resonant modulator for coherent optical communication
SPIE Proceedings, 1991A resonant cavity electro-optic phase modulator has been designed and implemented to operate at a data rate of 10 Mbps. The modulator consists of an electro-optic crystal located in a highly resonant cavity. The cavity is electro-optically switched on and off resonance, and the phase dispersion near the cavity resonance provides the output phase ...
Deborah L. Robinson +2 more
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Multichannel coherent optical communications systems
Journal of Lightwave Technology, 1987Balanced coherent receivers perform substantially better than single-detector receivers in multichannel optical fiber FDM communications systems since the balanced approach eliminates the direct-detection and signal-cross-signal interference. The permissible channel spacing D depends on the intermediate frequency f IF , on the bit rate R b , and on the
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Coherent Optical Free-Space Communications
Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications, 2006The performance of coherent FSO systems operating within atmospheric are limited by turbulence. The performance statistics are computed from models for the induce index fluctuations, the second order Rytov perturbation method of solution to the stochastic wave equation and an extended form of the Huygens-Fresnel.
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Dual-Frequency Modulation for Coherent Optical Communication
Journal of Optical Communications, 1986A new principle of dual-frequency modulation coherent optical communication is proposed; it has been tested.
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Optical Sources for Coherent Optical Fiber Communication Systems
SPIE Proceedings, 1985Bell Communications Research, Inc., Crawfords Corner Road, Holmdel, New Jersey 07733AbstractThis paper reports recent progress in the development of three categories of optical sources with linewidths, Av, sufficiently narrow to be used in heterodyne and homodyne optical fiber communication systems: First, single-longitudinal-mode semiconductor lasers ...
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Coherent optical communications systems
2008 Digest of the IEEE/LEOS Summer Topical Meetings, 2008openaire +2 more sources
Coherent optical communication
Trends in telecommunications, 1992Koonen, A.M.J., van Eijk, P.D.
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