Grating-assisted directional coupler formed a nonlinear thin fil

Details Grating-assisted directional coupler formed a nonlinear thin fil Grating-assisted directional coupler formed a nonlinear thin fil

1997-09-17

1999-06-22

Ngo, Hung N.

Optical waveguides

With optical coupler

Input/output coupler

385131, 385122, G02B 610

Patent

active

059150530

ABSTRACT:
The present invention provides to a novel grating-assisted directional coupler which is capable of appending a nonlinear thin film to a conventional linear grating-assisted directional coupler, to thereby significantly improve coupling efficiency and hence design a structure having optical multistable characteristics, which comprises; a thin film nonlinear optical waveguide with third-order nonlinearity, which having a first thickness; a first linear optical waveguide formed on the thin film nonlinear optical waveguide, which having a second thickness, wherein a linear refractive index of the first linear optical waveguide is more than that of the thin film nonlinear optical waveguide; an optical waveguide grating patterned in equi-distanced on top surface of the nonlinear optical waveguide; and a second optical waveguide formed at a portion which is displaced from top surface of the first linear optical waveguide by a predetermined distance.

REFERENCES:
patent: 5195161 (1993-03-01), Adar et al.
patent: 5500916 (1996-03-01), Cirelli et al.
patent: 5818983 (1998-10-01), Yoshimura et al.
Nonlinear all-optical beam scanner, Gaetano Assanto and G.I. Stegeman, Optical Sciences Center, University of Arizona, Tucson, Arizona, J. Appl. Phys. 67(3), Feb. 1, 1990, pp. 1188-1193.
Power-dependent output properties of a nonlinear grating coupler, Masayuki Matsumoto and Manabu Ohtsuka, Department of Communication Engineering, Osaka University, Osaka, Japan, J. Appl. Phys. 71(4), Feb. 15, 1992, pp. 2051-2053.
Grating-assisted In GaAsP/InP vertical codirectional coupler filter, R.C. Alferness, T.L Koch, L.L. Buhl, F. Storz, F. Heismann, and M.J.R. Martyak, AT&T Bell Laboratories, Holmdel, New Jersey, Appl. Phys. Lett. 55 (19), Nov. 6, 1989, pp. 2011-2013.
Focusing-grating-coupler arrays for uniform and efficient signal distribution in a backboard optical interconnect, Seok Ho Song and El Hang Lee, Applied Optics, vol. 34, No. 26, Sep. 10, 1995.

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