Reflection-type optical device

Details Reflection-type optical device Reflection-type optical device

2006-07-04

2006-07-04

Shafer, Ricky D. (Department: 2872)

Optical: systems and elements

Polarization without modulation

Polarization using a time invariant electric, magnetic, or...

C359S490020, C359S490020, C359S282000, C385S011000

Reexamination Certificate

active

07072111

ABSTRACT:
A reflection-type optical device used for an optical communication system, in which an element structure can be simplified and excellent optical characteristics are obtained. The reflection-type optical device includes a birefringent plate, a magnetic domain A of a Faraday rotator, a magnetic domain B of the Faraday rotator, a birefringent plate which allows the light beams to pass through as extraordinary rays, and a birefringent plate which allows a light beam having been reflected by a reflecting film and having passed through the birefringent plate and the magnetic domain A to pass through as an extraordinary ray, allows a light having been reflected by the reflecting film and having passed through the birefringent plate and the magnetic domain B to pass through as an ordinary ray, and emits a light beam from a light incoming/outgoing port.

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