High speed optical switch and time division optical demultiplexe

Details High speed optical switch and time division optical demultiplexe High speed optical switch and time division optical demultiplexe

1982-04-02

1984-06-19

Orsino, Jr., Joseph A.

Multiplex communications

Wide area network

Packet switching

370 2, G02B 2710, H04B 900

Patent

active

044556438

ABSTRACT:
The present invention relates to a high speed optical switch and the use of such switches to form a time division demultiplexer. The optical switch comprises a length of linear material (12) including an outer surface on a portion of which is formed a layer of nonlinear material (11) to form a nonlinear interface (10) at the boundary of the two materials. An input data light beam (14) is propagated in the linear material with a predetermined intensity and angle of incidence on the nonlinear interface to, by itself, cause total reflection of the input beam. A control light beam (11) is also selectively energized and directed at the nonlinear interface with an intensity and angle of incidence to cause a portion of the input data beam to be formed into a self-focused channel or beam propagating in the nonlinear material. The self-focused beam can then be detected at an edge of the nonlinear material.

REFERENCES:
patent: 3633034 (1969-01-01), Uchida
patent: 3652858 (1972-03-01), Kinsel
patent: 3670165 (1972-06-01), Kinsel
patent: 3671747 (1972-06-01), Duguay
patent: 4121884 (1978-10-01), Greenwood
patent: 4190811 (1980-02-01), Alcock
patent: 4244045 (1981-01-01), Nosu
Kaplan, A. E., "Hysteresis Reflection and Refraction by a Nonlinear Boundary-A New Class of Effects in Nonlinear Optics", Jul. 5, 1976, pp. 114-119.
Kaplan, A. E., "Theory of Hysteresis Reflection of Light by a Boundary of a Nonlinear Medium", May, 1977, pp. 896-905.
Smith, P. W., "Optical Bistability at a Nonlinear Interface", pp. 846-848, Dec. 1, 1979.
Tomlinson, W. J., "Surface Wave at a Nonlinear Interface", Jul. 1980, pp. 323-325.

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