Sensitized optical fiber method and article

Optical waveguides – Optical fiber waveguide with cladding

Reexamination Certificate

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C385S142000, C065S392000

Reexamination Certificate

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06941052

ABSTRACT:
A refractive index grating comprising an optical fiber having at least one radiation-sensitized portion, in a longitudinal section of the optical fiber, containing a periodic variation of refractive index. The refractive index grating has an initial magnitude that changes no more than two percent after conditioning at a temperature of 300° C. for a time of ten minutes.

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patent: WO 01/09899 (2001-02-01), None
Yuki Kondo, Kentaro Nouchi and Tsuneo Mitsuyu, “Fabrication of long-period fiber gratings by focused irradiation of infrared femtosecond laser pulses”, Optics Letters, vol. 24, No. 10, May 15, 1999, pp. 646-648.
Eric Fertein, Christophe Przygodzki, Herve Delbarre, Arif Hidayat, Marc Douay and Pierre Niay, “Refractive-index changes of standard telecommunication fiber through exposure to femtosecond laser pulses at 810 cm”, Applied Optics, vol. 40, No. 21, Jul. 20, 2001, pp. 3506-3508.

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