Optical recording device

Details Optical recording device Optical recording device

2007-01-23

2007-01-23

Pak, Sung (Department: 2874)

Optical waveguides

Planar optical waveguide

C385S130000, C369S013560, C369S030030, C720S718000

Reexamination Certificate

active

10870784

ABSTRACT:
An optical recording device includes: a light source for emitting light of plural wavelengths; an optical waveguide formed by a crystal defect in a photonic crystal, into which light emitted from the light source is launched; an information recording/erasing unit for changing the shape of the photonic crystal near the optical waveguide; and a light detecting unit for detecting the light emitted from the optical waveguide. A contact probe of the information recording/erasing unit applies pressure to one of a plurality of periodically arranged columnar holes of the photonic crystal to widen its diameter, thereby capturing light of a wavelength λkcorresponding to the information to be recorded. Since the optical waveguide extends parallel to the crystal surface, the optical recording device can be integrated with an optical circuit.

REFERENCES:
patent: 6597721 (2003-07-01), Hutchinson et al.
patent: 2002/0048422 (2002-04-01), Cotteverte et al.
patent: 2002/0150366 (2002-10-01), Loncar et al.
patent: 2003/0185532 (2003-10-01), Hosomi et al.
patent: 2003/0202764 (2003-10-01), Lee et al.
patent: 2005/0152656 (2005-07-01), Talneau et al.
patent: 2001272555 (2001-10-01), None
patent: 2003036561 (2003-02-01), None

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