Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2005-09-13
2005-09-13
Schwartz, Jordan M. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S240000, C359S280000
Reexamination Certificate
active
06943932
ABSTRACT:
A device and method for optical isolation for use in optical systems is disclosed. The device provides for a waveguide optical isolator fabricated using two arms, made of optical waveguides comprising magneto-optical material, in a Mach-Zehnder interferometer configuration. The device of the present invention operates using the TM mode of a light wave and, thus, does not require phase-matching of TM and TE modes. Further, the present invention does not use polarizers to extinguish the optical feed-back.
REFERENCES:
patent: 5058971 (1991-10-01), Schmitt et al.
patent: 5479551 (1995-12-01), DiGiovanni et al.
patent: 5686990 (1997-11-01), Laznicka, Jr.
patent: 6611644 (2003-08-01), Galstian
Fujita et al, “Waveguide optical isolator based on Mach-Zehnder interferometer”, Apr. 17, 2000, vol. 76, pp. 2158-2160.
Mizumoto et al, “In-Plane Magnetized Rare Earth Iron Garnet for a Waveguide Optical Isolator Employing Nonreciprocal Phase Shift”, Nov. 1993, vol. 29, pp. 3417-3419.
Fujita Junichiro
Levy Miguel
Osgood Richard M
Baker & Botts LLP
Schwartz Jordan M.
Stultz Jessica
The Trustees of Columbia University in the City of New York
LandOfFree
Waveguide mach-zehnder optical isolator utilizing transverse... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Waveguide mach-zehnder optical isolator utilizing transverse..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Waveguide mach-zehnder optical isolator utilizing transverse... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3410484