Optical fibers for optical amplifiers

Details Optical fibers for optical amplifiers Optical fibers for optical amplifiers

1995-09-25

1997-09-16

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

372 6, H01S 300

Patent

active

056686595

ABSTRACT:
An amplifying optical fiber includes a core containing Tm ions as activation ions and a clad containing at least one of Tb ions and Eu ions. Alternatively, the amplifying optical fiber includes a core composed of more than two layers. Tm is contained in more than one of the more than two layers as activation ions and at least one of Tb ions and Eu ions is contained in more than one of the more than two in which Tm is not contained.

REFERENCES:
patent: 4923279 (1990-05-01), Ainslie et al.
patent: 5299210 (1994-03-01), Snitzer et al.
patent: 5412672 (1995-05-01), Ainslie et al.
"Effective Codopant Ions for 1/4.mu.m-band Tm-doped ZBLAN Fiber Amplifiers" Sakamoto et al., NTT Opto-electronics Laboratories, The Institute of Electronics Information and Communications Engineers, Tech. Report 1994, pp. 67-72.
"Design of a 1.65.mu.m-Band Optical Time-Domain Reflecto-Meter" Takasugi et al., Journal of Lightwave Technology vol. 11, No. 11, Nov. 1993, pp. 1743-1748.
"Thulium Doped Terbium Sensitised CW Fluoride Fibre Laser Operating On the 1.47.mu.m Transition" Percival et al., Electronics Letters, 10th Jun. 1993, vol. 29, No. 12, pp. 1054-1056.
IEICE Technical Report, vol. 90, No. 206, pp. 88-95, "Optical Properties of Tm-doped Glass Fibers", Izumi Sankawa et al.

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