© The Institution of Electrical Engineers
A new frequency discriminator concept with nearly perfect square law demodulation characteristics is described. The performance of the device is verified in a 140 Mbit/s and 560 Mbit/s FSK heterodyne polarisation diversity transmission experiment
References
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Hooijmans, P.W., Tomesen, M.T., van de Grijp, A.: `A linewidth- and bitrate-flexible FSK heterodyne system, using a frequency discriminator and biphase coding', paper ThA21-6, Proc 15th ECOC, 1989.
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Imai, T.: `Polarisation diversity receiver using a simple weight controller for coherent lightwave systems', Proc. 14th ECOC, 1988, p. 159–162.
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Welter, R., Sessa, W.: `Polarisation sensitivity of ASK heterodyne diversity receivers', Proc. OFC, 1990, p. 131.
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Hooijmans, P.W., Tomesen, M.T., Mols, P.P.G.: `A coherent multi-bitrate multi-channel system for simultaneous transmission of 140 Mb/s TV and 560 Mb/s HDTV signals', Proc 16th ECOC, 1990.
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R. Noe
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Sensitivity comparison of coherent optical heterodyne, phase diversity, and polarisation diversity receivers.
J. Optical Commun.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_19901202
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