Patent ID: 6590694
Filing Date: 2003-07-08
Classification: G02F

Abstract:
A Faraday rotator, which comprises a first periodic dielectric multilayer film structured such that two kinds of dielectric thin films each having a refractive index different from the other are alternately laminated with regularity in each thickness thereof, a second periodic dielectric multilayer film structured such that two kinds of dielectric thin films each having refractive index different from the other are alternately laminated with regularity in each thickness thereof a magneto-optical thin film and a metal reflective film, and in which the magneto-optical thin film is sandwiched between the first periodic dielectric multilayer film and the second periodic dielectric multilayer film, whereina number of layers of the first periodic dielectric multilayer film is larger than that of the second periodic dielectric multilayer film, and the metal reflective film is formed on a side of the first periodic dielectric multilayer film opposite to a side in contact with the magneto-optical thin film.