Accession Number : ADD009957

Title :   Fiber Optic Switching Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Levi,Mark W

Report Date : 16 Nov 1982

Pagination or Media Count : 4

Abstract : An electro-optical crystal slab defining an optical waveguide modulator between two parallel boundary regions. Each boundary region has electrodes next to the channel and a doped area immediately outside the region. An electric field applied via the boundary electrodes creates a low index of refraction and transmitted light remains in the waveguide. When boundary fields are removed some light is absorbed by the doped material. Fields applied to compensating electrodes lower the index of refraction of the doped area so that the light is directed into it and absorbed. Any light passing through the absorbing material is contained in an alternate channel. (Author)

Descriptors :   *Patents, *Fiber optics transmission lines, *Optical switching, Optical waveguides, Electrooptics, Refraction, Doping, Attenuation, Electric fields, Crystal filters, Electrodes, Transmission loss, Low loss, Transparence, Multichannel communications, Boundaries, Reflection, Refractive index

Subject Categories : Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE