Patent
1986-09-15
1987-10-27
Corbin, John K.
350347V, 350347E, G02F 113
Patent
active
047025573
ABSTRACT:
The invention relates to an optical branching device which may be used as an optical isolator, circulator or switch. The device comprises two polarization-sensitive beam splitters. Each beam splitter comprises a prism and a rhombohedral plate between which a liquid crystal film is interposed. An optical device for rotating the plane of polarization of linearly polarized light is arranged between the two beam splitters. The polarization rotation device may comprise a Faraday rotator with a constant or a switchable direction of magnetization and a half-wave plate. Alternatively, the polarization rotation device may comprise a liquid crystal film interposed between two electrodes.
REFERENCES:
patent: 3980395 (1976-09-01), Giallorenzi et al.
patent: 4201442 (1980-05-01), McMahon et al.
patent: 4278327 (1981-07-01), McMahon et al.
patent: 4410238 (1983-10-01), Hanson
Iwamura, H. et al., "Optical Isolator and Circulator Using Y.sub.3 Fe.sub.5 O.sub.12 Crystals for Optical Fiber Transmission Systems." Ferrites:Proc. of the Int. Conf., pp. 787-790 (Sep.-Oct. 1980), Japan.
Soref, R. A., et al. "Total Switching of Unpolarized Fiber Light with a Formport Electro-Optic Liquid-Crystal Device." Optic Lett., vol. 5, No. 4, pp. 147-149 (Apr. 1980).
Beckmann Friedrich K.
Dotsch Horst
Hoppe Wolfgang
Corbin John K.
Gallivan Richard F.
Schechter Marc D.
U.S. Philips Corporation
LandOfFree
Optical branching device using a liquid crystal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical branching device using a liquid crystal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical branching device using a liquid crystal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1268464