Alkali and fluorine doped optical fiber

Details Alkali and fluorine doped optical fiber Alkali and fluorine doped optical fiber

2006-08-08

2006-08-08

Font, Frank G. (Department: 2883)

Optical waveguides

Having particular optical characteristic modifying chemical...

Of waveguide core

C385S123000, C385S124000, C385S126000, C385S127000, C385S141000, C385S144000

Reexamination Certificate

active

07088900

ABSTRACT:
Disclosed is an optical fiber having a core of SiO2doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber has an inner cladding surrounding the core, which also includes fluorine. A relative refractive index of the inner cladding (Δ2%), measured relative to pure silica, is preferably between −0.39% and −0.7%. The fiber preferably exhibits attenuation at 1550 nm of less than or equal to 0.178 dB/km.

REFERENCES:
patent: 3778132 (1973-12-01), Pinnow et al.
patent: 4372647 (1983-02-01), Okamoto et al.
patent: 4388093 (1983-06-01), Kimura et al.
patent: 4421540 (1983-12-01), Nakahara et al.
patent: 4770494 (1988-09-01), Csencsits et al.
patent: 4797143 (1989-01-01), Chida et al.
patent: 5055121 (1991-10-01), Kanamori et al.
patent: 5146534 (1992-09-01), Lines
patent: 5242476 (1993-09-01), Bartel et al.
patent: 6131413 (2000-10-01), Rousseau et al.
patent: 6385379 (2002-05-01), Rousseau et al.
patent: 2002/0144523 (2002-10-01), Orita et al.
patent: 2002/0170320 (2002-11-01), Schotz et al.
patent: 2004/0042759 (2004-03-01), Park et al.
patent: 2004/0123630 (2004-07-01), Sarkar
patent: 2004/0159124 (2004-08-01), Atkins et al.
patent: 2004/0187525 (2004-09-01), Coffey et al.
patent: 2004/0200240 (2004-10-01), Abe et al.
patent: 2005/0063663 (2005-03-01), Anderson et al.
patent: 2005/0089289 (2005-04-01), Hayami et al.
patent: 0 181 595 (1986-05-01), None
patent: 1 281 988 (2003-02-01), None
Nagayama et al., “Ultra Low Loss (0.1484 dB/km) Pure Silica Core Fiber”, SEI Technical Review, No. 57, Jan. 2004, p. 3-6.
Yamamoto et al., “Water-Free Pure-Silica-Core Fibre”, ECOC (European Conference on Optical Communication), Sep. 5-9, 2004, Stockholm, Sweden, session Th2.3.1, Sep. 2004. p. 1-4.

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