Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-08-14
2007-08-14
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S027000, C385S028000, C385S039000, C385S123000, C385S124000, C385S125000, C385S126000, C385S127000, C385S141000, C385S142000
Reexamination Certificate
active
11487258
ABSTRACT:
A large mode area (LMA) fiber with improved resistance to bend-induced distortions utilizes highly oscillatory modes such that the effective index of the propagating modes remains less than the bent-fiber “equivalent” refractive index over a greater portion of the core. By providing a signal mode with a reduced effective index, the “forbidden” (evanescent) region of the core is reduced, and bend-induced distortion of the propagating mode is largely avoided.
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Fini John M.
Ramachandran Siddharth
Font Frank G.
Furukawa Electric North America Inc.
Koba Wendy W.
Mooney Michael P.
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