Patent ID: 6813076
Filing Date: 2004-11-02
Classification: G02B,G02F

Abstract:
A Faraday rotator having wavelength selectivity, for selectively rotating only the polarization plane of incident light of given wavelengths, the Faraday rotator comprising:a magneto-optical section constituted from gadolinium iron garnet thin films in between which at least one dielectric layer is interlaminated to create at least two magneto-optical parts for rotating the polarization plane of incident light of at least two wavelengths traveling in the direction in which the magnetic field of said magneto-optical section is oriented; and dielectric multi-layer films in which a low refractive-index layer and a high refractive-index layer are laminated in alternation, disposed on each side of said magneto-optical section in an arrangement together with said magneto-optical section predetermined to create a resonant structure for localizing within said magneto-optical section incident light of at least two wavelengths.