Dispersion compensating optical fiber

Details Dispersion compensating optical fiber Dispersion compensating optical fiber

1998-03-10

2000-02-29

Ngo, Hung N.

Optical waveguides

Optical fiber waveguide with cladding

385127, G02B 610

Patent

active

060319550

ABSTRACT:
The present invention provides a dispersion compensating optical fiber, connected to a transmission single-mode optical fiber having zero dispersion in a 1.3-.mu.m wavelength band, for efficiently compensating for the dispersion of a light signal of a 1.55-.mu.m wavelength band. The refractive index configuration is such that the refractive index profile is a W type and that the dispersion value is a high negative value of not more than -80. The ratio Ra (Ra=a/b) of the diameter a of a core 1 and the diameter b of a side core 2 is set within a range of not less than 0.33 and not more than 0.37. The ratio DPS(SMF)/DPS(DCF) of a value DPS(SMF) obtained by dividing the dispersion value of the transmission single-mode optical fiber in the 1.55-.mu.m wavelength band by the dispersion slope of the transmission single-mode optical fiber in the 1.55-.mu.m wavelength to a value DPS(DCF) obtained by dividing the dispersion value of the dispersion compensating optical fiber in the 1.55-.mu.m wavelength band by the dispersion slope of the dispersion compensating optical fiber in the 1.55 .mu.m wavelength band is set within a range of not less than 0.95 and not more than 1.05.

REFERENCES:
patent: 5371815 (1994-12-01), Poole
patent: 5568583 (1996-10-01), Akasaka et al.
patent: 5673354 (1997-09-01), Akasaka et al.
patent: 5802234 (1998-09-01), Vengsarkar et al.
"Dispersion-compensating single-mode fibers: efficient designs for first-and second-order compensation" A.M. Vengsarkar and W.A. Reed Optics Letters, Jun. 1, 1993, No. 11, pp. 924-926.

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