Accession Number:

ADD018777

Title:

Multi-Octave, High Dynamic Range Operation of Low-Biased Modulators by Balanced Detection

Descriptive Note:

Patent, Filed 27 Jul 95, patented 1 Jul 97

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1997-07-01

Pagination or Media Count:

11.0

Abstract:

An optical link is disclosed that is operated by a balanced detection technique so as to extend its linear dynamic range, yet substantially elmainate even order harmonic distortion of the modulated signal. The modulator comprises two parallel arranged Mach-Zehnder interferometers that respectively have a steady state DC voltage bias applied so that the operating points of the Mach-Zehnder interferometers are selected to produce two separate modulated signals one of which is later phase shifted by a phase shift device so as to provide an output that is combined with the other modulated signal in such a manner so as to cause a subtraction, leaving the final output signal substantially free of any unwanted even order harmonic components in order to provide for a multi-octave response characteristic.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE