System, method and apparatus for polarization mode...

Details System, method and apparatus for polarization mode... System, method and apparatus for polarization mode...

2011-01-18

2011-01-18

Pascal, Leslie (Department: 2613)

Optical communications

Transmitter and receiver system

Including optical waveguide

C398S159000, C398S213000

Reexamination Certificate

active

07873282

ABSTRACT:
A polarization multiplex transmission system (10) comprises two optical signals (z1, z2) transmitted over the same optical fiber (15) at the same wavelength but with orthogonal polarizations. The system is characterized by receiving apparatus (10) which is operable to filter the two components with orthogonal polarization of the signal received in accordance with an appropriate transfer matrix which is dynamically controlled on the basis of the output signals in such a manner as to approximate the reverse transfer matrix of the fiber in the region of the spectrum occupied by the signal so as to compensate for Polarization Mode Dispersion (PMD) and polarization rotation introduced by the fiber and eliminating distortion and mutual interference effects for both the signals and thereby obtain a demultiplexed output corresponding to the two transmitted signals.

REFERENCES:
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patent: 2003/0103723 (2003-06-01), Bohn et al.
patent: 2003/0175034 (2003-09-01), Noe
patent: 2004/0208604 (2004-10-01), Madsen
patent: 2005/0254749 (2005-11-01), Bulow
patent: 0909045 (1999-04-01), None
patent: 1164724 (2001-12-01), None
Vassallo, C.: “PMD Pulse Deformation.” Electronics Letters, IEE Stevenage, GB, vol. 31, No. 18, Aug. 31, 1995, pp. 1597-1598, XP00600335. ISSN: 0013-5194.

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