Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1999-03-12
2000-06-20
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 42, 501 43, 501 54, 501 57, 501 68, 501 73, 359341, 359343, C03C 1304, C03C 306, C03C 3062, C03C 3083, C03C 3112
Patent
active
060777990
ABSTRACT:
These glasses incorporate a combination of F and Al.sub.2 O.sub.3 to achieve even wider fluorescence and improved gain flatness. In addition, SPCVD incorporates large amounts of N into low-loss fiber whose high charge has an impact on rare earth behavior. The Surface Plasma Chemical Vapor Deposition (SPCVD) produces fiber preforms with high levels of F, Al.sub.2 O.sub.3, and N. These heavily fluorinated glasses provide much broader Er.sup.3+ emission than Type I or Type II silica for enhanced multichannel amplifiers. SPCVD successfully fluorinates silica with losses below 5 dB/km and increased Er.sup.3+ emission width.
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"Optical Properties of Erbium-Doped Fibre Based on Fluorine Co-Doped Silica Glass." E.M. Dianov et al., ECOC (1994), pp. 959-962. (No Month).
"Gain-Flattened EDFA w/High Al Concentration for Multstage Repeatered WDM Transmission Systems." Yoshida, S. et al., Electronics Letters, Sep. 28, 1995, vol. 31, No. 20, pp. 1765-1767.
"Improvement of Gain Flatness of Optical Fluoride Fiber Amplifiers for Multiwavelength Transmission." Semenkoff, M. et al., J. Non-Cryst. Solids 184 (1995), pp. 240-243. (No Month).
"Er.sup.+3 --Doped Multicomponent Glass Core Fibre Amplifier Pumped at 1.48 .mu.m." Ohashi, M. et al., Electronics Letters, Nov. 7, 1991, vol. 27, No. 23, pp. 2143-2145.
"Lanthanum CoDoped Erbium Fibre Amplifier." Nakazawa et al., Electronics Letters, Jun. 6, 1991, vol. 27, No. 12, pp. 1065-1067.
Dejneka Matthew J.
Khrapko Rostislav
Bell Mark L.
Corning Inc.
Murphy Edward F.
Nwaneri Angela N.
Sample David
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