Photonic-bandgap fiber with a core ring

Details Photonic-bandgap fiber with a core ring Photonic-bandgap fiber with a core ring

2007-04-19

2008-07-15

Wood, Kevin S. (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

C385S125000

Reexamination Certificate

active

07400806

ABSTRACT:
A photonic-bandgap fiber includes a photonic crystal lattice with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The photonic-bandgap fiber further includes a core and a core ring surrounding the core and having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.

REFERENCES:
patent: 6778749 (2004-08-01), Allan et al.
patent: 7228041 (2007-06-01), Kim et al.

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