Integrated optical givens rotation device

Details Integrated optical givens rotation device Integrated optical givens rotation device

1988-08-16

1990-08-21

Lee, John D.

350 9611, 350 9615, G02B 612, G02F 121

Patent

active

049500422

ABSTRACT:
An elementary optical Givens rotation device is disclosed comprising a monolithic integrated optical circuit including crossed waveguides, interdigitated electrode means associated with the crossed waveguides at their crossing point, and electro-optic phase shifter means lying upstream and downstream of the interdigitated electrode means with respect to one of the waveguides. Two mutually coherent, transverse magnetic input light signals are guided simultaneously into each waveguide. A voltage applied to the interdigitated electrode means induces a diffraction grating thereby forming transmitted and diffracted light waves in output sections of the respective waveguides. Phase shifter means include means for applying voltages to each phase shifter which are equal in magnitude but opposite in sign so that the transmitted and diffracted waves combine in phase in one waveguide and combine 180.degree. out of phase in the other waveguide. The device is useful for matrix triangularization by arranging arrays of these devices in a parallel or pipelined architecture on a substrate.

REFERENCES:
patent: 4008947 (1977-02-01), Baues et al.
patent: 4125316 (1978-11-01), Stotts et al.
patent: 4384760 (1983-05-01), Alferness
patent: 4403833 (1983-09-01), Kenan et al.
patent: 4592004 (1986-05-01), Bocker et al.
patent: 4607344 (1986-08-01), Athale et al.
patent: 4711515 (1987-12-01), Alferness

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