Photonic bandgap fibers

Details Photonic bandgap fibers Photonic bandgap fibers

2011-06-28

2011-06-28

Healy, Brian M (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S125000, C385S124000, C385S123000, C385S122000, C385S141000, C385S011000, C398S081000, C398S141000, C359S341100

Reexamination Certificate

active

07970248

ABSTRACT:
Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.

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English translation of Office Action in Japanese Patent Application No. JP 2006-549554, mailing date Aug. 9, 2010, in 3 pages.

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