Waveguide-type broadband optical isolator

Details Waveguide-type broadband optical isolator Waveguide-type broadband optical isolator

2006-10-10

2010-02-16

Le, Uyen-Chau N (Department: 2874)

Optical waveguides

Polarization without modulation

Reexamination Certificate

active

07664346

ABSTRACT:
A waveguide-type broadband optical isolator according to the present invention, comprising: a reciprocal phase shifter which makes a phase difference 3π/2 between a first light wave propagating through a first waveguide and a second light wave propagating through a second waveguide, with a fundamental operating wavelength λ, and a nonreciprocal phase shifter which provides a phase difference π/2 for forward propagating waves and a phase difference −π/2 for backward propagating waves.

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Applied Optics, vol. 39, No. 33, Nov. 2000; Demonstration of an Optical Isolator With a Semiconductor Guiding Layer That Was Obtained by Use of a Nonreciprocal Phase Shift; H. Yokoi et al; pp. 6158-6164.
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