Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2006-12-22
2009-02-17
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S337000
Reexamination Certificate
active
07492508
ABSTRACT:
A fiber amplifier includes at least one coreless end used for the input or extraction of optical energy. The coreless end has a transverse cross section which differs from the transverse cross section of the core at fiber locations remote from the end, so that the diameter of the input or extracted optical beam at the coreless end can be larger than the diameter of the fiber core, to increase an optical damage threshold of the fiber amplifier.
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Fermann Martin E.
Galvanauskas Almantas
Harter Donald J.
Raksi Ferenc
Aisin Seiki Co., Ltd.
Hellner Mark
Sughrue & Mion, PLLC
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