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Coherent Optical Communications: What Next?
, 2005 Modulation formats for optical communication have evolved from NRZ to RZ to CSRZ, and recently to RZ D(Q)PSK, a coherent modulation technique. Coherent optical communications, extensively investigated before the arrival of EDFA, is attracting renewed ...
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Coherent Optical Communication
Seventh Topical Meeting on Integrated and Guided-Wave Optics, 1984Virtually all fibre transmission systems up to the present have used simple intensity modulation of the transmit laser, most frequently in the form of binary ON/OFF modulation. At the receiver, incoming optical power has been converted directly to photocurrent in a photodetector.
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Coherent Optical Communications
20th European Microwave Conference, 1990, 1990A variety of coherent optical communications are reviewed in comparison with microwave communications.
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Coherent Optical Fiber Communications
Journal of Modern Optics, 1989(1989). Coherent Optical Fiber Communications. Journal of Modern Optics: Vol. 36, No. 4, pp. 552-552.
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Modern coherent optical communications
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006Coherent systems can achieve better spectral efficiency, and better sensitivity than conventional on-off keying systems. This paper reviews recent research efforts and examines future possibilities in the field.
Leonid G. Kazovsky, Georgios Kalogerakis
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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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Homodyne coherent optical receiver for intersatellite communication
Applied Optics, 2018For increasing the data rate and reducing the power consumption in satellite communication systems, free-space optical communication technology has been verified as an attractive alternative to traditional radiofrequency communication systems. In this study, a high-sensitivity homodyne coherent optical receiver was demonstrated. A sensitivity of -59.2
Chaolei, Yue +7 more
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Coherent Optical Communication Systems
IETE Journal of Education, 1997This paper presents an overview of coherent optical fiber communication systems. The fundamental principle is described and the performance limits under shot noise limited operation for various modulation and demodulation schemes are compared with respect to the quantum limit.
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Dispersion compensation in coherent fiber-optic communications
Optics Letters, 1987Linear filtering techniques in coherent communications systems appear to offer a useful method for increasing the bandwidth in dispersion-limited fiber-optical signal propagation. These techniques are described, and the requirements on filter performance are outlined. Bandwidth is shown to be related to the square root of the filter figure of merit.
R G, Priest, T G, Giallorenzi
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