Optical communications – Transmitter and receiver system – Including polarization
Reexamination Certificate
2005-03-22
2005-03-22
Sedighian, M. R. (Department: 2633)
Optical communications
Transmitter and receiver system
Including polarization
C398S184000, C398S185000, C398S200000, C398S142000, C398S043000, C359S281000, C359S246000, C385S001000, C365S022000
Reexamination Certificate
active
06871023
ABSTRACT:
A spread polarization transmitter for transmitting at least one light signal comprises a spread-spectrum communication apparatus and a polarization modulator. The spread-spectrum communication apparatus modulates the at least one light signal according to a spread-spectrum modulation technique. The polarization modulator comprises a polarizer and a magnetic bubble waveguide. The polarizer is capable of polarizing the at least one spread-spectrum modulated light signal in a polarized direction. And the magnetic bubble waveguide, which is configured in accordance with a pseudo-random polarization code sequence such that the plurality of magnetic bubble domains assume a time varying position representative of the pseudo-random polarization code sequence, is capable of receiving at least one polarized, spread-spectrum modulated light signal. Thereafter, the magnetic bubble waveguide is capable of at least partially rotating the polarized, spread-spectrum modulated light signals by a predetermined angle from the polarized direction during transmission therethrough to create spread polarization modulated light signals.
REFERENCES:
patent: 3534347 (1970-10-01), Bobeck
patent: 3711840 (1973-01-01), Copeland, III
patent: 3756690 (1973-09-01), Borrelli et al.
patent: 3764195 (1973-10-01), Blank et al.
patent: 4040039 (1977-08-01), Hanson et al.
patent: 4056812 (1977-11-01), Bobeck et al.
patent: 4095279 (1978-06-01), Lins
patent: 4142247 (1979-02-01), Bobeck
patent: 4142249 (1979-02-01), Bobeck
patent: 4143419 (1979-03-01), Bobeck
patent: 4143420 (1979-03-01), Bobeck
patent: 4162537 (1979-07-01), Bobeck
patent: 4355373 (1982-10-01), Bobeck
patent: 4541072 (1985-09-01), Kikuchi
patent: 4669089 (1987-05-01), Gahagan et al.
patent: 4671621 (1987-06-01), Dillon, Jr. et al.
patent: 4728178 (1988-03-01), Gualtieri et al.
patent: 4735489 (1988-04-01), Tolksdorf et al.
patent: 4866698 (1989-09-01), Huggins et al.
patent: 4985899 (1991-01-01), Walsh
patent: 5087984 (1992-02-01), Heiney et al.
patent: 5245471 (1993-09-01), Iwatsuka et al.
patent: 5287300 (1994-02-01), Stadler et al.
patent: 5341396 (1994-08-01), Higgins et al.
patent: 5657151 (1997-08-01), Swan et al.
patent: 5841557 (1998-11-01), Otsuka et al.
patent: 5867290 (1999-02-01), Dutt et al.
patent: 5973832 (1999-10-01), Bettman
patent: 6002512 (1999-12-01), Bergmann et al.
patent: 6014475 (2000-01-01), Frisken
Garnet Films, GARNETS; <http://www.iem.it/˜magni/work/doc/garnet-phd/garnets.html>; visited Aug. 8, 2000; pp. 1-48.
New Material for Magnetic Bubble Memory; STA TODAY; Aug. 1999; p. 1 <http://www.sta.go.jp/sonata/sonata/e9908_10.html>; visited Aug. 8, 2000.
Atmur Robert J.
Hunt Jeffrey H.
Alston & Bird LLP
Lee David J.
Sedighian M. R.
LandOfFree
Spread polarization transmitter and associated system and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spread polarization transmitter and associated system and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread polarization transmitter and associated system and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3445451