Optical waveguides – Polarization without modulation
Reexamination Certificate
2005-10-25
2005-10-25
Palmer, Phan T. H. (Department: 2874)
Optical waveguides
Polarization without modulation
C385S006000
Reexamination Certificate
active
06959124
ABSTRACT:
The present invention provides an electro-optical device, characterized in that it comprises two plane optical substrates (100) each having at least one optical waveguide (110), and a nematic liquid crystal (200) inserted between them, in which the liquid crystal (200) is split into two separate active zones (210, 220) serving to control coupling/decoupling of a respective one of the TE and TM polarizations of a light signal injected into the waveguides (110).
REFERENCES:
patent: 4095869 (1978-06-01), Reichelt et al.
patent: 62145224 (1987-06-01), None
patent: 01140124 (1989-06-01), None
Willson et al. “A Liquid Crystal Cutt-Off Modulator for Multimode Optical Waveguides”, Optik, 1984, West Germany, vol. 67, No. 1, pp. 37-41.
Wilson T. et al., “A liquid cut-off modulator for multimode optical waveguides”, Optik, 1984, West Germany, vol. 67, No. 1, pp. 37-41.
Bao Xue Chen et al., “High-contrast channel waveguide switch with two sections of a nematic liquid crystal covering”, Applied Optics, Washington, US, vol. 32, No. 30, Oct. 20, 1993, pp. 6018-6021.
Okamura Y. et al., “Electrooptic leaky waveguides using namtic liquid crystal”, 9th European Conference on Optical Communication, Geneva, Switzerland, Oct. 23-26, 1983, pp. 213-216.
Boissier Alain
Duhem Olivier
Legay Jean-Francois
Martinot-Lagarde Philippe
Blakely & Sokoloff, Taylor & Zafman
Nemoptic
Palmer Phan T. H.
LandOfFree
Liquid crystal-based electro-optical device forming, in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid crystal-based electro-optical device forming, in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal-based electro-optical device forming, in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3474322