Method of manufacturing a fused fiber coupler

Details Method of manufacturing a fused fiber coupler Method of manufacturing a fused fiber coupler

1992-03-27

1993-06-08

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 29, 385 28, C03B 37027

Patent

active

052175170

ABSTRACT:
To make a fused fiber coupler (1) which is especially suited as a pump coupler for use in fiber amplifiers, exhibits low sensitivity to polarization, and can be spliced in with low loss, commercially available single-mode fibers are employed. After completion of an elongating process and interruption of heat from a heat supply, the input-fiber pair (fiber ends 4, 5) and the output-fiber (fiber ends 6, 7) of two fused lengths of the fiber (2, 3) are twisted by 180.degree. about their common axis and fixed in this position.

REFERENCES:
patent: 4796968 (1989-01-01), Coccoli et al.
patent: 4957338 (1990-09-01), Thorncraft et al.
patent: 5064267 (1991-11-01), Rossberg
"Deutsch Norm" (German Standard), Aug. 1987, DIN VDE 0888, Part 2, Sec. 6.2.
Minelly et al.: "Wavelength Combining Fused-Taper Couplers with Low Sensitivity to Polarisation for use with 1480nm-Pumped Erbium-Doped Fibre Amplifiers", Apr. 1990, pp. 523-524, Electronics Letters, vol. 26, No. 8, Great Britain.
Wilkinson et al.: "Closed-Spaced Fused Fibre Wavelength Division Multiplexers with very Low Polarisation Sensitivity", Mar. 1990, pp. 382-384, Electronics Letters, vol. 26, No. 6, Great Britain.

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