Optical waveguide structure

Details Optical waveguide structure Optical waveguide structure

2006-03-21

2006-03-21

Assaf, Fayez G. (Department: 2872)

Optical waveguides

Planar optical waveguide

C385S131000, C385S132000, C385S027000, C385S039000, C385S028000, C385S050000

Reexamination Certificate

active

07016586

ABSTRACT:
There is provided a planar waveguide structure (700) having a first core layer (708), a second core layer (704) and a cladding layer (706), wherein the cladding layer (706) is disposed between the first core layer (708) and the second core layer (704) to form an inter-core cladding layer (706). The inter-core cladding layer (706) comprises a first region (722) having a first refractive index and an array of sub-regions (724) formed therein having a second refractive index. The subregions (724) do not extend into either the first or the second core layer, and they give rise to a photonic band structure region, which is effective to perturb an evanescent field of an optical signal propagating through the core layers.

REFERENCES:
patent: 6512866 (2003-01-01), Fan et al.
patent: 6643439 (2003-11-01), Notomi et al.
M. Koshiba, “Wavelength Division Multiplexing and Demultiplexing With Photonic Crystal Waveguide Couplers”Journal of Lightwave Technology, vol. 19, No. 12, Dec. 2001, pp. 1970-1975.
M. Koshiba et al, “Time-Domain Beam Propagation Method and Its Application to Photonic Crystal Circuits”Journal of Lightwave Technology, vol. 18, No. 1, Jan. 2000, pp. 102-110.
Y. Tsuji et al, “Finite Element Method Using Port Truncation by Perfectly Matched Layer Boundary Conditions for Optical Waveguide Discontinuity Problems”Journal of Lightwave Technology, vol. 20, No. 3, Mar. 2002, pp. 463-468.

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