Optical fibers and optical fiber amplifiers

Details Optical fibers and optical fiber amplifiers Optical fibers and optical fiber amplifiers

1996-02-13

1999-01-05

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359343, 372 6, 385142, 501 37, 501 40, C03C 1304, H01S 306

Patent

active

058568824

ABSTRACT:
Disclosed are an optical fiber comprising a core and a cladding wherein the core is composed of a In-Ga-Cd-Pb halide glass and the clad composed of a halide glass possesses a refractive index of 1.515 or less, which has a large specific refractive index difference (.DELTA.n) and a large numerical aperture, and such an optical fiber as mentioned above wherein the core contains one or more activating ions as well as an optical fiber amplifier comprising a pumping source, a laser glass fiber and a means for introducing pumping light and signal light into the above laser glass fiber, wherein the laser glass fiber is the optical fiber of the present invention mentioned above.

REFERENCES:
patent: 4845057 (1989-07-01), Miura et al.
patent: 5389584 (1995-02-01), Aitken et al.
patent: 5392376 (1995-02-01), Aitken
European Search Report by Examiner L. Van Bommel on 30 Jul. 1997 in the Hague.
Derwent Database WPI, AN 85-239497 & JP 60155549, Aug. 15, 1985.
Derwent Database WPI, AN 94-306435 & JP 06232489, Aug. 19, 1994.
Patent Abstracts of Japan, vol. 95, No. 008, Sep. 29, 1995 & JP 07 138042 (Hoya Corp), May 30, 1995.
Balda et al, J. Non-Cyst. Solids (Netherlands, vol. 161, pp. 133-136, 1993 (abstract only herewith).
Macfarlane D.R.; Journal of Non-Cyst. Solids, vol. 140, pp. 1-3, Jan. 2, 1992; abst only herewith.
Yavagta et al, Conf. Opt. Fiber Commun., vol. 81 1955, Feb. 3, 1995, abst. only herewith.

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