Dispersion shifted optical waveguide fiber
AssigneeCorning Incorporated
InventorVenkata A. Bhagavatula
Life of this patent
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Abstract
A single mode optical waveguide fiber designed for high data rate, or WDM systems or systems incorporating optical amplifiers. The optical waveguide has a compound core having a central region and at least one annular region surrounding the central region. A distinguishing feature of the waveguide core is that the minimum refractive index of the central core region is less than the minimum index of the adjacent annular region. A relatively simple profile design has the characteristics of ease in manufacturing together with flexibility in tailoring Dw to yield a preselected zero dispersion wavelength, dispersion magnitude over a target wavelength range, and dispersion slope. The simplicity of profile gives reduced polarization mode dispersion.
Claims12
A single mode fiber comprising a core which is comprised of at least two regions, one of said regions having a peak refractive index which is different from the peak refractive index of the other of said at least two regions, said fiber core comprising a refractive index profile which results in said single mode fiber exhibiting a zero dispersion wavelength outside the wavelength range of 1530 nm to 1565 nm, and a dispersion slope at 1550 nm of less than about 0.075 ps/nm2-km.
Dependencies are inferred from the claim text.