Implementation of one or more optical waveguides in reduced...

Optical waveguides – Planar optical waveguide

Reexamination Certificate

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C438S031000

Reexamination Certificate

active

07903920

ABSTRACT:
One or more first portions of a reduced optical material wafer are covered with a masking layer that leaves uncovered one or more second portions of the reduced optical material wafer. The reduced optical material wafer is exposed to an oxidizing atmosphere to reverse a reduction of the one or more second portions of the reduced optical material wafer that makes the one or more second portions receptive for implementation of one or more optical waveguides.

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E.M: Standifer et al., “Chemically Reduced Lithium Niobate Single Crystals: Processing, Properties and Improvements in SAW Device Fabrication and Performance”, IEEE Frequency Control Symposium, May 27-29, 1998, pp. 470 to 472.
Kaminow, I.P. et al., “Optical Waveguiding Layers in LiNb03 and LiTa03”, Applied Physics Letter, Apr. 1, 1973; pp. 326-328, vol. 22, No. 7, USA.
Bordui et al., Chemically Reduced Lithium Niobate Single Crystals: Processing, properties and improved surface acoustic wave device fabrication and performance; Journal of Applied Physics; Apr. 1, 1999; vol. 85, No. 7; 4 pgs.; Palo Alto, CA and Bloomfield, CT.
Standifer et al., Chemically Reduced Lithium Niobate Single Crystals: Processing properties and improvements in SAW device fabrication and performance; IEEE Proceedings of the 1998 International Frequency Control Symposium; 1998; 3 pgs.; Palo Alto, CA.

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