Method and apparatus for minimizing propagation losses in...

Details Method and apparatus for minimizing propagation losses in... Method and apparatus for minimizing propagation losses in...

2007-07-12

2008-12-23

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S015000, C385S030000

Reexamination Certificate

active

07469085

ABSTRACT:
The present invention is a method and an apparatus for minimizing losses in wavelength selective filters. In one embodiment, an apparatus includes a waveguide bus defined in a first crystalline layer of the apparatus, for receiving incoming light, a resonator defined in the first crystalline layer, and a coupling structure defined in a second polysilicon or amorphous silicon layer of the apparatus, for coupling a selected wavelength of the incoming light from the waveguide bus to the resonator.

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Tishinin et al, “Vertical Resonant Couplers with Precise Coupling Efficiency Control Fabricated by Wafer Bonding,” IEEE Photonics Technology Lei-Fers, vol. 11, No. 8, Aug. 1999.
Tishinin, et al, “Vertical Resonant Couplers with Precise Coupling Efficiency Control Fabricated by Wafer Bonding,” IEEE Photonics Technology Letters, vol. 11, No. 8, Aug. 1999.

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