Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Reexamination Certificate
2005-07-26
2005-07-26
Bovernick, Rodney (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
C385S123000, C385S124000, C385S126000, C359S341100
Reexamination Certificate
active
06922514
ABSTRACT:
An optical transmission fiber has a refractive index profile with an area of increased index of refraction at the inner core of the fiber, an annular region positioned radially outward from the inner core with an index of refraction exceeding the index of the inner core, and at least a low dopant content region in a cross-sectional region between the inner core and the annular region. A low loss cladding layer surrounds the core region. The optical transmission fiber with this segmented core profile provides a high effective area, low non-linearity coefficient, nonzero dispersion, and relatively flat dispersion slope.
REFERENCES:
patent: 5327516 (1994-07-01), Chraplyvy et al.
patent: 5504829 (1996-04-01), Evans et al.
patent: 5579428 (1996-11-01), Evans et al.
patent: 5684909 (1997-11-01), Liu
patent: 5905838 (1999-05-01), Judy et al.
patent: 6321016 (2001-11-01), Tirloni et al.
patent: 6507689 (2003-01-01), Tirloni et al.
patent: 0 789 256 (1997-08-01), None
P. Nouchi, P. Sansonetti, C. LeSergent, “Novel Index Profile for Improved Large Effective Area Fiber,”International Wire&Cable Symposium Proceeds(1996), pp. 939-945.
F. Cocchini, G. Ferri, A. Mazzotti, “Microbending sensitivity of optical fibres,”OFMC(1995).
Kazuo Nagano et al., “Change of the refractive index in an optical fiber due to external forces,”Applied Optics,vol. 17, No. 13, Jul. 1978, pp 2080-2086.
A.B. Sharma et al., “Constant-curvature loss in monomode fibers: an experimental investigation,”Applied Optics,vol. 23, No. 19, Oct. 1984, pp. 3297-3301.
Yoshinori Namihira, “Nonlinear Coefficient Measurements for Various Large Effective Area Fibers and Dispersion Shifted Fibers by SPM Method using Tunable Transform-Limited Optical Short Pulse Source with External Modulators,” KDD R&D Laboratories, Japan, pp 50-53.
Roba Giacomo Stefano
Sarchi Davide
Sartori Francesco Gabriele
Tirloni Bartolomeo Italo
Bovernick Rodney
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Pak Sung
Pirelli & C. S.p.A.
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