Method and Apparatus for Overcoming Polarization-Induced Signal Fading in Optical-Fiber Coherent Communications.
Abstract
A method and apparatus is disclosed for overcoming the polarization-induced signal fading problem in coherent heterodyne systems by mixing the incoming signal light with orthogonal local oscillator polarization modes which have been separated in the optical frequency domain to produce a composite beam, photodetecting the heterodyne mixing between this composite beam and the received signal light to produce first and second intermediate frequency signals, separately filtering and demodulating each of the first and second intermediate frequency signals to provide first and second demodulated signals, and combining the first and second demodulated signals to produce a non-fading output signal. Patent application. (rrh)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1988
- Accession Number
- ADD013842
Entities
People
- Alan Kersey
Organizations
- United States Department of the Navy