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Optical-waveguide-device-with-phase-matching-layers

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Optical waveguide device with phase matching layers

Details

Inventors: Shirasaki, Masataka; Obokata, Takeshi;
Assignee: Fujitsu Limited (Kawasaki, JP)
Primary Examiner: Lee; John D.
Assistant Examiner: Gonzalez; Frank
Attorney, Agent or Firm: Staas & Halsey

An optical waveguide device is disclosed, which includes an optical waveguide member having a predetermined length and thickness, the thickness is far smaller than the length. The optical waveguide member is covered, on it's top and bottom surfaces, by phase-matching layers. The phase-matching layers function to substantially decrease the difference (d.DELTA.) between the phase shift (.delta..sub.p) of a P polarized light component and the phase shift (.delta..sub.s) of a S polarized light component, included in light to be transmitted through the optical waveguide member. The phase shift is created every time a reflection takes place on the top and bottom surfaces thereof.

DETAILED DESCRIPTION It is an object of the present invention to provide an optical waveguide device which, even though the thickness of the device is made very small, produces almost no deleterious crosstalk.

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