Abstract
We propose new phase- and polarisation-insensitive receivers for coherent optical fibre communication systems which have the following characteristic features: (a) insensitivity to LO excess noise in addition to phase- and polarization-insensitivity; (b) absence of optical PLL and polarization control devices; (c) a smaller detector bandwidth requirement than for heterodyne systems; (d) the same source linewidth requirement as for heterodyne systems with non-coherent demodulation; (e) the possibility of a complete optoelectronic integrated circuit (OEIC) version in the future.
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Singh, N., Gupta, H.M. & Jain, V.K. New phase and polarization-insensitive receivers for coherent optical fibre communication systems. Opt Quant Electron 21, 343–346 (1989). https://doi.org/10.1007/BF02027305
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DOI: https://doi.org/10.1007/BF02027305