Interference in fast wavelength switched CPFSK systems with heterodyne detection

In optical cross-connect and packet switched applications, as the wavelength of a transmitter laser is switched from one value to another it may momentarily coincide with wavelengths being using by other transmitter lasers. The resultant interference is assessed experimentally for CPFSK systems with heterodyne detection. It is shown that wavelength switching and direct frequency modulation can be utilized at a bit rate of 155.52 Mb/s provided differential detection is used to demodulate the intermediate frequency signal.<
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