Erbium-doped fiber amplifier

Details Erbium-doped fiber amplifier Erbium-doped fiber amplifier

1990-07-31

1991-06-25

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

372 6, 372 70, 350 9629, 350 9634, H01S 330, G02B 626

Patent

active

050270796

ABSTRACT:
This invention relates to an Erbium doped fiber amplifier having improved operating characteristics. Parameters which determine the operating characteristics of an erbium doped fiber amplifier are the concentration of erbium in the core of a fiber; the ratio of the radius of the core of the fiber doped with erbium relative to the radius of the core of the fiber, and, the length of the fiber. It is now recognized that improved fiber amplifier performance can be obtained by varying the core-cladding refractive index difference of the fiber. The various parameters are here defined for providing an erbium doped fiber amplifier having optimum gain characteristics.

REFERENCES:
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patent: 4733940 (1988-03-01), Broer et al.
patent: 4782491 (1988-11-01), Snitzer
patent: 4804259 (1989-02-01), Sasaki et al.
Desurvire et al., "Efficient Erbium-Doped . . . Power"; Opt. Lett., vol. 14, #22, 11/15/89, pp. 266-268.
Barnes et al., "High-Quantium-Efficiency . . . 980 nm"; Opt. Lett., vol. 14, #18, 9/15/89. pp. 1002-1004.
Desurvire et al., "High-Gain . . . Fiber Amplifier"; Opt. Lett., vol. 12, #11, 11/87, pp. 888-890.
Laming et al., "Pump Excited-State . . . Fibers"; Opt. Lett., vol. 13, #12, 12/88, pp. 1084-1085.

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