Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1993-06-24
1995-01-03
Group, Karl
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 37, C03C 332
Patent
active
053786645
ABSTRACT:
A chalcogenide glass that is doped with praseodymium and contains a rare earth metal is disclosed. The rare earth metal is at least 10 mole percent of the metals in the glass. The concentration of the praseodymium in the glass is at least 200 ppm. The chalcogenide glass, when formed into an amplifier for an optical fiber transmission system, efficiently amplifies optical signals in the signal band of 1.3 .mu.m.
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Borisova et al. "Vitrification in Melts of Chalcogenides of Arsenic & The Rare Earth Elements" Izv. Akad. Nauk SSSR, Neorg. Mater. 6(2) 1970 (No Month) pp. 334-335.
Heo et al. "Optical Characteristics of Chalcogenide & Heavy Metal Oxide Glasses Doped with Rare Earths" SPIE Optical Communications, vol. 1817 1992 (No Month) pp. 134-140.
Izawa, T., and Sudo, S., Optical Fibers: Materials and Fabrication, pp. 137-152 (1987) (No Month).
Cervelle, B. D., et al., "Variation, Avec la Composition, des Indices Refraction des Verres de Sulfureo de Lanthan et de Gallium et Indices de Quelques Verres Apparentes," Mat. Res. Bull., 15:159-164 (1980) (No Month).
Shimzu, Makoto, et al., "28.3 dB Gain Pr-Doped Fluoride Fiber Amplifier Module Pumped by 1.017 .mu.m InGaAs-LDs," Proc. OSC/100CR, PD-12, San Jose, Calif., 1993 (No Month).
Ohishi, Y., et al., "Pr.sup.3+ -doped Fluoride Fiber amplifier operating at 3 .mu.m," Optics Letters, vol. 16, No. 22, pp. 1747-1749, Nov. 15, 1991.
Pedersen, B., et al., "Optimization of Pr.sup.3+ :ZBLAN Fiber Amplifiers," IEEE Photonics Technology Letters, 4(5):446 (May 1992).
Becker Philippe C.
Bruce Allan J.
DiGiovanni David J.
Lambrecht, Jr. Vincent G.
AT&T Corp.
Botos Richard J.
Group Karl
Sample David
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