×

Fiber optic external modulator

  • US 5,109,441 A
  • Filed: 01/18/1991
  • Issued: 04/28/1992
  • Est. Priority Date: 01/18/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical modulator for modulating an optical carrier with an information signal comprising:

  • means for splitting an optical carrier received from a first source into a plurality of portions;

    means, coupled to receive a first portion of said optical carrier from said splitting means, for modulating said first portion with an information signal received from a second source;

    means, coupled to receive a second portion of said carrier from said splitting means, for processing said second portion to provide an attenuating signal for use in attenuating said optical carrier; and

    means, coupled to receive said attenuating signal and the modulated first portion of said optical carrier, for combining the modulated first portion with said attenuating signal to provide an intensity modulated attenuated optical carrier.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×