Optical fiber composed of glass doped with laser-active ions of

Details Optical fiber composed of glass doped with laser-active ions of Optical fiber composed of glass doped with laser-active ions of

1994-03-02

1994-11-22

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 37, 385142, C03C 3247, C03C 1304

Patent

active

053669371

ABSTRACT:
Optical fiber composed of a glass doped with at least laser-active ions of an element from the rare earths. An optical fiber of glass, preferably a HMF glass, doped with Tm.sup.3+ is operated at 1.48 .mu.m as a fiber laser or amplifier on the laser transition .sup.3 F.sub.4 -.sup.3 H.sub.4. Since this thereby involves a self-saturating transition, the terminal level is emptied in accelerated fashion for a continuous wave mode by co-doping with de-activators, preferably Ho.sup.3+, Tb.sup.3+, Eu.sup.3+ and/or Pr.sup.3+ ions. The pump light wavelength can be selected from the wavelength range from 700 through 890 nm of GaAlAs emission. The optical fiber can be used in optical amplifiers or fiber amplifiers.

REFERENCES:
patent: 3527711 (1967-05-01), Barbar et al.
patent: 3599106 (1971-08-01), Snitzer
patent: 3599114 (1971-08-01), Snitzer et al.
patent: 4717691 (1988-01-01), Lucas et al.
patent: 4962995 (1990-10-01), Andrews et al.
"Rare-Earth-Doped Fiber Lasers & Amplifiers" by D. N. Payne et al, Proc. 14th Europ. Conf. Opt. Comm., Brighton, U.K. 1988, pp. 49-53. No month.
"Laser Pumping of Ho-, Tm-, Er-Doped Garnet Lasers at Room Temperature" by G. Huber et al, IEEE Journal of Quantum Electronics, vol. 24, No. 6, Jun. 1988, pp. 920-923.
"Spectra and Energy Levels of Rare Earth Ions in Crystals" by Gerhard Heinrich Dieke, Interscience Publishers, John Wiley & Sons, New York, London, Sydney, Toronto, Chapter 10, p. 134. 1968, no month.

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