Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1991-06-04
1995-10-24
Epps, Georgia Y.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359288, 359243, G02F 101
Patent
active
054615070
ABSTRACT:
The present invention provides a bistable optical device in which the active medium is a polymer material of thermo-optical effect inserted into a cavity resonator, preferably a FABRY-PEROT resonance cavity, in said cavity the polymer material transmitting and reflecting an incident light wave with bistable values and values variable according to its thermal state. This latter is varied by the absorption of a fraction of the incident light wave, which transfers heat to the polymer material to generate therein an increase in the transmission of the incident light and a variable refractive index in response to the increase in its temperature, to thus provide a positive response effect which enables the device of the present invention to vary between two bistable states.
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patent: 5022741 (1991-06-01), Dagenais et al.
H. J. Kong et al., Journal of Applied Physics, vol. 67, No. 10, Thermally Induced Optical Bistability and Self-Oscillation in a Nonlinear Etalon Filled With Optical Adhesive, May 1990, pp. 6066-6069.
XV International Conference of Quantum Electronics, Apr. 26-May 1, 1987.
A. D. Lloyd et al., Optics Communications, CW Optical Bistability in Non-Absorbing Liquids and Liquid Crystals Using HeNe and Diode Lasers, Mar. 1987, pp. 339-344.
Blau Werner
Costa Lorenzo
Skarda Vladimir
Westland Duncan J.
Enichem S.p.A.
Epps Georgia Y.
Robbins Thomas
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