Fiber optic amplifier

Details Fiber optic amplifier Fiber optic amplifier

1992-02-13

1993-03-16

Gonzalez, Frank

Optical waveguides

With optical coupler

Particular coupling function

359341, 372 6, G02B 626

Patent

active

051951495

ABSTRACT:
To increase the pump efficiency in a fiber-optic amplifier, the pump coupler (2) is fabricated from a fiber whose mode field diameter for the pump light is adapted to the mode field diameter of the active length of fiber (7).
In an alternative solution, the arm of the pump coupler (2) coupled to the pump source (1) on the one hand and connected to the active length of fiber (7) on the other hand consists of a fiber adapted to the mode field diameter of the active length of fiber (7), and the arm of the pump coupler (2) serving as a connection to the incoming transmission line (8) consists of a fiber corresponding to the optical waveguide of the transmission line (8).

REFERENCES:
patent: 4863230 (1989-09-01), Webb
patent: 4938556 (1990-07-01), Digonnet et al.
patent: 4963832 (1990-10-01), Desurvire et al.
patent: 5048026 (1991-09-01), Shaw et al.
patent: 5067789 (1991-11-01), Hall et al.
"5 Gbit/s Transmission Over 146 KM Using Erbium-Doped Fibre Amplifier", B. Wedding et al, ECOC '89, Fifteenth European Conference on Optical Communication, Gothenburg, Sweden, Sep. 10-14, 1989, Regular Papers TuA5-7, vol. 1, pp. 86-89.
Electronic Letters, vol. 22, No. 6, Mar. 13, 1986, pp. 318-319 "Low-Loss Joints Between Dissimilar Fibres by Tapering Fusion Splices" D. B. Mortimore, J. V. Wright.

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