Photonic bandgap fiber

Details Photonic bandgap fiber Photonic bandgap fiber

2008-08-14

2010-02-02

Le, Uyen-Chau N (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing nonsolid core or cladding

C385S123000

Reexamination Certificate

active

07657141

ABSTRACT:
A photonic bandgap fiber includes a hollow core formed along a center axis of the photonic bandgap fiber, through which a light propagates and a cladding region made of silica glass. The cladding region includes air holes forming a triangular lattice arranged around the hollow core. A lattice constant of the triangular lattice of the air holes Λ is equal to or smaller than 2.1 μm. Confinement loss in a predetermined wavelength range including a center wavelength of a photonic bandgap is lower than scattering loss.

REFERENCES:
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patent: 2007-009094 (2007-01-01), None
Yoshihiro Tsuchida et al., “Dispersion-Flattened Photonic Crystal Fibers with Central Air-Hole”, Institute of Electronics, Information, and Communication Engineers, No. 1., Mar. 3, 2003, p. 231, C-3-91, (English Translation included, 4 pp.).
P. J. Roberts et al., “Ultimate Low Loss of Hollow-core Photonic Crystal Fibres”, Optics Express, vol. 13, No. 1, pp. 236-244, Jan. 10, 2005.
G. Humbert et al., “HollowCore Photonic Crystal Fibers for Beam Delivery”, Optics Express, vol. 12, No. 8, pp. 1477-1484, Apr. 19, 2004.

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