Coherent light generators – Optical fiber laser
Reexamination Certificate
2005-07-26
2009-10-06
Fahmy, Wael (Department: 2814)
Coherent light generators
Optical fiber laser
C372S039000, C372S070000, C372S109000, C359S341100, C359S341300, C359S341500, C359S345000
Reexamination Certificate
active
07599404
ABSTRACT:
A composite optic fibre for laser includes a core surrounded with a pump guiding sheath in contact with the core, sheath being a photonic structure formed by a substantially regular matrix assembly of coaxial capillaries, spaced apart and arranged parallel to the core, the core being a material with doping elements which may be brought into at least one excited electronic state by absorbing the energy from a pump optical signal of a first determined wavelength running through the core and capable of giving-back the former by de-energization in the form of an optical signal of a second determined wavelength, the core having a determined diameter and the sheath having a determined diameter. The diameter of the guiding sheath is greater than the core diameter and smaller than or equal to four times the core diameter, the core diameter being greater than or equal to 35 micrometers.
REFERENCES:
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patent: 2005/0082470 (2005-04-01), Dziekan et al.
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Definition of rigid, as provided on www.dictionary.com noting that “rigid” is an adjective having a meaning including “hard.”
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Limpert Jens
Salin François
Centre National de la Recherche Scientifique
Fahmy Wael
Sayadian Hrayr A
Universite de Bordeaux 1
Young & Thompson
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