Two step discrete phase shift demodulation method for fiber opti

Optical: systems and elements – Optical demodulator

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G02F 200

Patent

active

06154308&

ABSTRACT:
Optical signals input to a sensor array that includes a plurality of pathlength mismatched interferometers are phase modulated. Two different phase steps are generated in sequence within a time interval T in signals output from the interferometer array. Signals output from the array are processed to produce a first output signal S.sub.1 that is a function of the phase shift .phi. and a first one of the phase steps in a first portion of the time interval T and a second output signal S.sub.2 that is a function of the phase shift .phi. and the other one of the phase steps in a second portion of the time interval T. The signals S.sub.1 and S.sub.2, are processed to calculate the phase shift .phi. in optical signals that have propagated through the sensor array as functions of the sum and differences of the signals S.sub.1 and S.sub.2.

REFERENCES:
patent: 4957362 (1990-09-01), Peterson
patent: 5633748 (1997-05-01), Perez et al.
patent: 5719673 (1998-02-01), Dorsel et al.
patent: 5883548 (1999-03-01), Assard et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Two step discrete phase shift demodulation method for fiber opti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two step discrete phase shift demodulation method for fiber opti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two step discrete phase shift demodulation method for fiber opti will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1731562

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.