Dispersion managed optical waveguide

Details Dispersion managed optical waveguide Dispersion managed optical waveguide

1996-01-11

1999-04-13

Ngo, John

Optical waveguides

Optical fiber waveguide with cladding

385147, G02B 610

Patent

active

058945377

ABSTRACT:
A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

REFERENCES:
patent: 4969710 (1990-11-01), Tick et al.
patent: 5267339 (1993-11-01), Yamaguchi et al.
patent: 5361319 (1994-11-01), Antos et al.
patent: 5430822 (1995-07-01), Shigematsu et al.
patent: 5448674 (1995-09-01), Vengsarkar et al.
patent: 5559290 (1996-09-01), Chraplyvy et al.

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