Nonlinear optical device for controlling a signal light by a con

Details Nonlinear optical device for controlling a signal light by a con Nonlinear optical device for controlling a signal light by a con

1991-04-22

1993-03-02

Ullah, Akm E.

Optical waveguides

Having nonlinear property

385 5, 359328, 359326, G02F 128, G02F 1015, G02B 610

Patent

active

051916304

ABSTRACT:
A nonlinear optical device for controlling a signal light by a control light comprises a waveguide region consisting of an optical nonlinear semiconductor material, and an electrostatic field generator, which is a DC supply for example. Carriers (electrons and holes) generated by excitation of electrons due to a control light having a predetermined wavelength supplied to the waveguide region are swept away from the waveguide region by an electrostatic field, so that the change of nonlinear refractive index of the waveguide region can follow the change of the control light to increase the operation speed of the nonlinear optical device.

REFERENCES:
patent: 3746879 (1973-07-01), Esaki et al.
patent: 4775215 (1988-10-01), Teng et al.
patent: 4863245 (1989-09-01), Roxlo
patent: 4999485 (1991-03-01), Capasso et al.
patent: 5005933 (1991-04-01), Shimuzu

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