Dispersion-compensating fiber using a higher-order mode

Details Dispersion-compensating fiber using a higher-order mode Dispersion-compensating fiber using a higher-order mode

2005-06-28

2005-06-28

Lee, John R. (Department: 2881)

Optical waveguides

Optical fiber waveguide with cladding

C385S127000, C385S028000, C385S105000

Reexamination Certificate

active

06912348

ABSTRACT:
The invention relates to a dispersion-compensating optical fiber for use in wavelength division multiplex transmission systems, said fiber including successively, from the center toward the periphery, a core having a varying index profile and then a cladding having a constant index, enabling the propagation, for a given operating spectral range greater than 30 nm, of at least one higher-order mode in addition to the LP01fundamental mode, the index profile of the core being determined so that, for said higher mode, and for said operating spectral range, the chromatic dispersion is less than −150 ps
m.km, the chromatic dispersion slope is negative, the effective area is greater than 40 μm2, the difference between the wavelength corresponding to the overall minimum chromatic dispersion outside the operating spectral range and the wavelength corresponding to the upper limit of the operating spectral range is greater than 35 nm, and the relative variation of the dispersion slope over the operating spectral range has an absolute value less than 30%.

REFERENCES:
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A. Goel et al, “Wide-Band Dispersion Compensating Optical Fiber”, IEEE Photonics Technology Letters, IEEE, Inc., NY, vol., 8, No. 12, Dec. 1, 1996, pp. 1668-1670, XP000679544.
A. H. Gnauck et al, “Dispersion and dispersion-slope compensation of NZDSF over the entire C band using higher-order-mode fibre”, Electronics Letters, IEE Stevenage, GB, vol. 36, No. 23, Nov. 9, 2000, pp. 1946-1947, XP006015890.
M. Eguchi et al, “Dispersion Compensation Based on Dual-Mode Optical Fibre With Inhomogeneous Profile Core”, Journal of Lightwave Technology, IEEE, NY, US, vol. 14, No. 10 Oct. 1, 1996, pp. 2387-2394, XP000631544.

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