Apparatus using two-mode optical waveguide with non-circular...

Details Apparatus using two-mode optical waveguide with non-circular... Apparatus using two-mode optical waveguide with non-circular...

G - Physics

02

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88/98, 88/97.6

G02B 27/12 (2006.01) G01D 5/34 (2006.01) G02B 6/10 (2006.01) G02B 6/24 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) G02F 1/01 (2006.01)

Patent

CA 1322878

STANF.7C6 PATENT APPARATUS USING TWO-MODE OPTICAL WAVEGUIDE WITH NON-CIRCULAR CORE Abstract of the Disclosure An apparatus utilizes a two-mode optical waveguide with a non-circular core to provide stable spatial intensity patterns in both propagation modes for light propagating therein. The light has a wavelength, and the non-circular core has cross-sectional dimensions selected such that (1) the waveguide propagates light at that wavelength in a fundamental mode and a higher order mode, and (2) substantially all of the light in the higher order mode propagates in only a single, stable intensity pattern. Embodiments of the invention include, for example, modal couplers, frequency shifters, mode selectors and interferometers. One of the interferometer embodiments may be used as a strain gauge. JTS-5755 890228/3 STANF.7C6

594180

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