Thermal modulation of light beams

Optics: measuring and testing – By particle light scattering – With photocell detection

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350 9613, 350359, G01D 902

Patent

active

048590592

ABSTRACT:
The phase of light passing through an optical waveguide is modulated by aying electric current to heat the waveguide and thereby alter the length and refractive index thereof. An application for the thermal phase modulation concept is provided in a Mach-Zehnder interferometer.

REFERENCES:
patent: 3946370 (1976-03-01), Schmidt et al.
patent: 4588296 (1986-05-01), Cahill et al.
patent: 4675522 (1987-06-01), Arunkumar
patent: 4753505 (1988-06-01), Mikami et al.

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