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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1994),
  • paper CThI33

Optimum IF filter bandwidth for coherent optical heterodyne CPFSK differential receivers

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Abstract

An attractive modulation format for coherent optical communication systems is the continuous-phase frequency shift keying (CPFSK).1 CPFSK can be demodulated by means of differential detection (Fig. 1).1 This type of receiver combines improved sensitivity and circuit simplicity. However, its performance depends mainly on the choke of the bandpass filter.

© 1994 Optical Society of America

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