Optical waveguides – Optical fiber waveguide with cladding – Utilizing nonsolid core or cladding
Reexamination Certificate
2008-08-06
2010-11-02
Peace, Rhonda S (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing nonsolid core or cladding
C385S123000
Reexamination Certificate
active
07826701
ABSTRACT:
An optical fiber includes a core region having a first refractive index and a cladding region having a second refractive index lower than the first refractive index on an outer circumference of the core region. The cladding region includes four holes formed to have a four-fold rotational symmetry with respect to a center axis around the core region in a longitudinal direction, such that a zero-dispersion wavelength is 900 nm to 1150 nm and a cutoff wavelength is equal to or shorter than 950 nm.
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Aiso Keiichi
Miyabe Ryo
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Peace Rhonda S
The Furukawa Electric Co. Ltd.
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