Wave-guiding structure with lasing properties

Details Wave-guiding structure with lasing properties Wave-guiding structure with lasing properties

1993-12-10

1995-05-02

Gonzalez, Frank

Coherent light generators

Optical fiber laser

359341, 385142, H01S 330

Patent

active

054126720

ABSTRACT:
Optical wave-guides, e.g. fibres, for use as photonic amplifiers have a path region partly or, preferably, wholly composed as a silica/germania glass with 0.1 to 5000 ppm mole of Er.sup.3+ as a lasing additive and alumina to adjust the bandwidth, the Ge:Al mole ratio being more than 2.8, e.g. 1:0.001 to 0.25. It is surprising that low amounts of alumina have a useful and significant effect on the lasing bandwidth whereby frequency division multiplex is facilitated.

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patent: 5210631 (1993-05-01), Huber et al.
patent: 5225925 (1993-07-01), Grubb et al.
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"Aluminum or Phosphorus Co-Doping Effects on the Fluorescence and Structural Properties of Neodymium-Doped Silica Glass", Arai et al., J. Appl. Phys., 59(10), 15 May 1986, pp. 3430-3436.
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IEEE Photonics Technology Letters, vol. 2, No. 1, Jan. 1990, New York, pp. 18-20; Chen et al: "A Widely Tunable Erbium-Doped Fiber Laser Pumped at 532nm".
IEEE Photonics Technology Letters, vol. 2, No. 1, Jan. 1990, New York pp. 35-37; Becker et al: "Erbium-Doped Fiber Amplifier Pumped in the 950-1000 NM Region."
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