Optical device and method for manufacturing the same

Details Optical device and method for manufacturing the same Optical device and method for manufacturing the same

2011-03-01

2011-03-01

Sanghavi, Hemang (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S131000, C372S050110, C372S102000

Reexamination Certificate

active

07899283

ABSTRACT:
An optical device including: an optical waveguide; and a plurality of diffraction grating layers provided along the optical waveguide, wherein each of the diffraction grating layers comprises a diffraction grating, each diffraction grating comprising a discontinuous first semiconductor layer and a second semiconductor layer burying the first semiconductor layer, the first and second semiconductor layers having different refractive indices, the plurality of diffraction grating layers comprise at least two diffraction grating layers being different from each other in terms of the length of a region where the diffraction grating is provided, and the diffraction gratings in an overlap region of the plurality of diffraction grating layers have the same phase and period is provided.

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