Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1990-11-13
1992-05-05
Arnold, Bruce Y.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359283, 359484, G02F 109, G02B 108
Patent
active
051113309
ABSTRACT:
An improvement in a method of rotating the plane of polarization of polarized light in a Faraday rotator, having an optical element which includes a ferromagnetic material, which comprises varying the strength of the magnetic field generated along the optical axis of the optical element in response to changes in the wavelength of the polarized light. The magnet employed in the Faraday rotator may be at least one permanent magnet or an electromagnet. Preferred optical elements are made of disc having a gadolinium-gallium-garnet (GGG) or large lattice constant (LLC) substrate, and the substrate is coated with an oxygen--and iron--containing film.
REFERENCES:
patent: 3764195 (1973-10-01), Blank et al.
patent: 4195908 (1980-04-01), Kestigan et al.
patent: 4755026 (1988-07-01), Honda et al.
patent: 4756607 (1988-07-01), Watanabe et al.
patent: 4804256 (1989-02-01), Wilson
patent: 4973119 (1990-11-01), Taki
patent: 4974944 (1990-12-01), Chang
Belt et al, "Growth of Bismuth Garnet Films for High Figure of Merit Faraday Effect Devices," SPIE vol. 753 (1987), pp. 142-149.
VanDelden Jay S.
Wilson Donald K.
Arnold Bruce Y.
Bain John N.
Lerner Martin
Lillie Raymond J.
Optics for Research
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