Dispersion-flattened single-mode optical waveguide with large ef

Details Dispersion-flattened single-mode optical waveguide with large ef Dispersion-flattened single-mode optical waveguide with large ef

1996-07-03

1997-10-07

Lee, John D.

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

385123, G02B 622

Patent

active

056756909

ABSTRACT:
A single-mode optical waveguide comprises an optical core and a cladding surrounding the optical core having a predetermined refractive index. The core comprises a central area that has a refractive index lower than the predetermined refractive index and annular area around the central area that has a refractive index higher than the predetermined refractive index. Between the peripheral annular area and the cladding is at least one composite annular area made up of two successive annular areas respectively having refractive indices lower than and higher than the predetermined refractive index.

REFERENCES:
patent: 4406518 (1983-09-01), Matsumura et al.
patent: 5013131 (1991-05-01), Fotheringham
Mahmoud et al. "Transmission Characteristics of a Coaxial Optical Fiber Line", Journal of Lightwave Technology, vol. 11, No. 11, pp. 1717-1720 Nov. 1993.
Yangsheng Gao et al, "Attenuation-Optimized Dispersion-Flattened Quadruple-Clad Fibers with Moderate F-Doping in the First Inner Cladding ", IEEE Photonics Technology Letters, vol. 4, No. 6, Jun, 1, 1992, pp. 638-641.
L. M. Holmes et al, "Special Profile Nulls Fiber Dispersion at Two Wavelengths", Laser Focus World, vol. 26, No. 2, 1 Feb. 1990, p. 121.
F. Ruhl, "Cutoff Decomposition on Multiply Clad Fibers", Journal of Lightwave Technology, vol. 4, No. 11, 1 Nov. 1986, pp. 1651-1654.

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