Compound optical phase grating and optical switch

Details Compound optical phase grating and optical switch Compound optical phase grating and optical switch

1985-11-21

1987-07-14

Corbin, John K.

35016222, 35016223, 350 9619, 350DIG2, G02B 518, G02B 634

Patent

active

046799010

ABSTRACT:
The invention relates to a compound blazed optical phase grating. The grating comprises at least two grating sections which are disposed opposite each other in parallel planes. The gratings have grooves which extend parallel to each other. The grating sections have equal grating periods and are movable relative to each other within their planes and perpendicular to the grooves. Over one grating period, the optical path length varies at least substantially parabolically and symmetrically relative to the grating period. The path length varies in such a manner that when both grating sections are symmetrically arranged relative to a common line perpendicular to the grating planes, the optical path length through the compound grating is uniform across the grating. Various optical switches and switching matrixes can be formed by using such compound phase gratings.

REFERENCES:
patent: 4257673 (1981-03-01), Matthijsse
patent: 4360251 (1982-11-01), Rajchman
Dammann, H. "Blazed Synthetic Phase-Only Holograms," Optik, vol. 31, No. 1, pp. 95-104 (1970).
Dammann, H. "From Prism-Prism Via Grating-Prism to Grating-Grating Compounds," Applied Optics, vol. 19, No. 14, pp. 2276-2278 (Jul. 1980).
Dammann, H. "Spectral Characteristic of Stepped-Phase Gratings," Optik, vol. 53, No. 5, pp. 409-417 (1979).
Minowa, J. et al. "Nonblocking 8.times.8 Optical Matrix Switch for Fibre-Optic Communication," Electronics Lett., vol. 16, No. 11, pp. 422-423 (Apr. 1980).
Philips-Rutz, E. M., et al. "Electrooptic Bragg Diffraction Switches in Low Cross-Talk Integrated Optics Switching Matrix," Applied Optics, vol. 21, No. 12, pp. 2189-2194 (Jun. 1982).
Shirasaki, M., et al. "Bistable Magnetooptic Switch for Multimode Optical Fiber," Applied Optics, vol. 21, No. 11, pp. 1943-1949 (Jun. 1982).
Tanaka, T. P., et al. "Simple and Reliable Optical Bypass Switch for Fiberoptic Data Bus Application," 7th Euro. Conf. Opt. Comm., Copenhagen, pp. P15-1 to P15-4 (1981).

Affiliated with

Also associated with

Rating

Compound optical phase grating and optical switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compound optical phase grating and optical switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compound optical phase grating and optical switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1424875