Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2011-01-25
2011-01-25
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C385S126000, C385S146000
Reexamination Certificate
active
07876495
ABSTRACT:
An apparatus and method for compensating for mode-profile distortions caused by bending optical fibers having large mode areas. In various embodiments, the invention micro-structures the index of refraction in the core and surrounding areas of the inner cladding from the inner bend radius to the outer bend radius in a manner that compensates for the index changes that are otherwise induced in the index profile by the geometry and/or stresses to the fiber caused by the bending. Some embodiments of an apparatus and method include a fiber having a plurality of substantially parallel cores, the fiber including a straight section and a curved section; guiding signal light primarily in a second core in the straight section; guiding the signal light from the second core into a first core between the straight section and the curved section; and guiding the signal light primarily in the first core in the curved section.
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Bolda Eric
Lemaire Charles A.
Lemaire Patent Law Firm, P.L.L.C.
Lockheed Martin Corporation
Rixen Jonathan M.
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