Multiple order PMD compensator for optical fiber...

Details Multiple order PMD compensator for optical fiber... Multiple order PMD compensator for optical fiber...

2006-07-25

2006-07-25

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

Polarization without modulation

Reexamination Certificate

active

07082228

ABSTRACT:
In accordance with the invention, an optical fiber transmission system is provided with multiple order PMD compensation to provide enhanced compensation at high bit rates and across a range of frequencies. Specifically, PMD is compensated by a concatenated series of components, each component configured to compensate for the effects of a successively higher order term of a PMD Taylor series approximation. Advantageously, each component comprises a polarization controller and a differential dispersion element of specified order. In an exemplary embodiment, the first order differential dispersion element can be a standard differential group delay (DGD) element. The element of second order can be a differential group-velocity dispersion element, and the third order element can be a differential dispersion slope element. These differential dispersion elements of various orders can be fixed or tunable elements in different embodiments.

REFERENCES:
patent: 6538787 (2003-03-01), Moeller et al.
patent: 6654103 (2003-11-01), Yu et al.
patent: 6748142 (2004-06-01), Madsen
patent: 6778782 (2004-08-01), Watley et al.
patent: 6829409 (2004-12-01), Koch et al.
patent: 6842283 (2005-01-01), Savory et al.
patent: WO 03/030410 (2003-04-01), None

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