Accession Number : ADD018700

Title :   Fiber Optic Digital Transmission System

Descriptive Note : Patent, Filed 6 Jun 95, patented 1 Jul 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Burns, Willaim K ; Gopalakrishnan, Ganesh K

Report Date : 01 Jul 1997

Pagination or Media Count : 34

Abstract : A transmission system responsive to an electrical input information signal includes means for modulating the input signal with a microwave subcarrier signal to produce a subcarrier modulated signal. A first interferometric modulator responsive to a source light and to the subcarrier modulated signal produces a first modulated optical signal. A second interferometric modulator cascade coupled to the first modulator and being responsive to the first modulated optical signal and to a microwave local oscillator signal produces a second modulated optical signal. Means coupled between the first and second modulators transmit the first modulated optical signal from the first modulator to the second modulator. Means responsive to the second modulated optical signal produce an output signal.

Descriptors :   *FIBER OPTICS, *PATENTS, *FREQUENCY MODULATORS, SIGNAL PROCESSING, FREQUENCY MODULATION, OPTICAL WAVEGUIDES, INTERFEROMETRY, CARRIER FREQUENCIES, LOCAL OSCILLATORS, MICROWAVE OSCILLATORS

Subject Categories : Electrical and Electronic Equipment
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE