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System for optically transmitting digital communications over an optical fiber with dispersion at the operating wavelength

  • US 5,371,625 A
  • Filed: 01/29/1993
  • Issued: 12/06/1994
  • Est. Priority Date: 02/01/1992
  • Status: Expired due to Term
First Claim
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1. A system, comprising:

  • an electrical-to-optical converter at a transmitting end of the system, responsive to a digital signal, for providing a frequency-shift-keyed (FSK) modulated optical output signal;

    an optical fiber with dispersion at an operating wavelength of the system, responsive to the FSK modulated optical output signal, for providing a fiber-transmitted FSK modulated optical output signal;

    an optical-to-electrical converter at a receiving end of the system, responsive to intensity variations of the fiber-transmitted FSK modulated optical output signal, for providing an electrical signal that corresponds to the intensity variations in the fiber-transmitted FSK modulated optical output signal; and

    a decider, responsive to the intensity variations of the electrical signal froe the optical-to-electrical converter, for providing a recovered digital signal.

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