Optical switch having photonic crystal structure

Optical waveguides – With optical coupler – Switch

Reexamination Certificate

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Details

C385S040000, C385S130000, C359S320000, C359S322000

Reexamination Certificate

active

11181722

ABSTRACT:
The present invention provides an optical switch having a photonic crystal structure. An optical switch of the invention has a slab optical waveguide structure whose core (35) has a two-dimensional photonic crystal structure where two or more media (33, 34) with different refractive indices are alternately and regularly arranged in a two-dimensional manner. The photonic crystal structure comprises: a line-defect waveguide; and means for altering the refractive index of the line-defect waveguide.

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Hideo Kosaka et al., Photonic crystals for micro lightwave circuits using wavelenght-dependent angular beam steering, Applied Physics Letters, vol. 74, pp. 1370-1372 (Mar. 8, 1999).
Physical Review Letters, Optical Limiting and Switching of Ultrashort Pulses in Nonlinear Photonic Band Gap Materials, vol. 73, No. 10, Sep. 5, 1994, pp. 1368-1371.

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