Photorefractive thin film polymer waveguide two beam coupling (W

Details Photorefractive thin film polymer waveguide two beam coupling (W Photorefractive thin film polymer waveguide two beam coupling (W

1996-06-26

1998-03-03

Ullah, Akm E.

Optical waveguides

Directional optical modulation within an optical waveguide

G02F 1295

Patent

active

057244600

ABSTRACT:
A photorefractive polymer waveguide is used to perform waveguide two beam coupling. Light incident on the waveguide interferes with scattered incident light or an input signal to create a modulated index pattern in the waveguide. The incident light is diffracted by the modulated index pattern to amplify signals in the waveguide in the direction of signal propagation.

REFERENCES:
patent: 5161039 (1992-11-01), Schellenberg
patent: 5361148 (1994-11-01), Bjorklund et al.
"A photorefractive polymer with high optical gain and diffraction efficiency near 100%" by Meerhloz et al., Oct. 6, 1994, vol. 371, Letters to Nature, pp. 497-500.
"Wave Mixing and Beam Profile Control in a Photorefractive Waveguide", Mar. 15, 1995, vol. 20, No. 6 Optics Letters, pp. 563-565, by Yu et al.
"A Photorefractive Polymer with High Optical Gain and Diffration Efficiency Near 100%", Oct. 6, 1994, vol. 371, Letters to Nature, pp. 497-500, by Meerholz et al.
"Photorefractive Waveguide and Nonlinear Mode Coupling Effects", Feb. 20, 1989, Appl Phys Lett, 54, pp. 684-686, by Fischer et al.
"Photorefractive Crystal Waveguide with Periodically Reserved c Axis for Enhanced Two-Wave Mixing", Appl. Phys. Lett. 59, 1932 (1991) by Ito et al.

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