Fiber Optic Switching Device.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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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
- Fiber Optics and Integrated Optics