Waveguide mach-zehnder optical isolator utilizing transverse magneto-optical phase shift

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United States of America Patent

PATENT NO 6943932
APP PUB NO 20040047531A1
SERIAL NO

10240521

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK412 LOW MEMORIAL LIBRARY 535 W 116TH STREET NEW YORK NY 10027

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujita, Junichiro Wilmington, MA 13 81
Levy, Miguel Chasell, MI 10 390
Osgood, Richard M Chappaqua, NY 6 220

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