Optical communications – Receiver – Heterodyne
Reexamination Certificate
2008-05-09
2010-10-26
Vanderpuye, Ken N (Department: 2613)
Optical communications
Receiver
Heterodyne
C398S065000, C398S081000, C398S207000, C398S208000
Reexamination Certificate
active
07822350
ABSTRACT:
Digital compensation of the polarization-mode dispersion (PMD) effects experienced by an optical signal in a transmission link is achieved. A digital representation of the optical fields of two orthogonal polarization components of an optical signal, defined by a polarization beam splitter (PBS), is first obtained. The fiber transmission link is treated as a concatenation of multiple virtual PMD segments, each having two specific principle-state-of-polarization (PSP) axes and causing a differential group-delay (DGD) and a phase delay between two signal components that are polarized along the two PSP axes. The best guesses of the parameters of the PMD segments and the relative orientation between the PSP axes of the last PMD segment and the characteristic polarization axes of the PBS are dynamically obtained. The digital representation of at least one generic component of the field of the optical signal is then computed through matrix operations by using the best guesses.
REFERENCES:
patent: 6385356 (2002-05-01), Jopson et al.
patent: 6385357 (2002-05-01), Jopson et al.
patent: 6412131 (2002-07-01), Zhao et al.
patent: 6417948 (2002-07-01), Chowdhury et al.
patent: 6538787 (2003-03-01), Moeller et al.
patent: 6559991 (2003-05-01), Farley et al.
patent: 6750956 (2004-06-01), Moeller
patent: 6782211 (2004-08-01), Core
patent: 6856710 (2005-02-01), Wein et al.
patent: 6859268 (2005-02-01), Chou et al.
patent: 7076169 (2006-07-01), Shpantzer et al.
patent: 7257290 (2007-08-01), Bulow
patent: 7343104 (2008-03-01), Doerr et al.
patent: 7382985 (2008-06-01), Roberts et al.
patent: 2001/0028760 (2001-10-01), Yaffe
patent: 2004/0114939 (2004-06-01), Taylor
patent: 2004/0218932 (2004-11-01), Epworth et al.
patent: 2005/0069330 (2005-03-01), Kao et al.
patent: 2005/0141406 (2005-06-01), Maltsev et al.
patent: 2007/0140701 (2007-06-01), Riposati
patent: 2008/0025733 (2008-01-01), Nazarathy et al.
patent: 2008/0075472 (2008-03-01), Liu et al.
patent: 2009/0034967 (2009-02-01), Tao et al.
patent: 2009/0074427 (2009-03-01), Liu
patent: 2009/0074428 (2009-03-01), Liu
Crivelli et al. , “Adaptive Digital Equalization in the Presence of Chromatic Dispersion, PMD, and Phase Noise in Coherent Fiber Optic Systems”, 2004, IEEE Communication Society.
Agere systems inc. “Polarization Controller Overview”, Jun. 2002, Application Note.
Sunnerud et al. “A Comparison Between Different PMD Compensation Techniques”, Mar. 2002, Journal of lightwave technology.
Merker et al. “PMD compensation up to second order by tracking the principle states of polarization using a two-section compensator”, Optics communication, Oct. 2001.
Heismann, “Analysis of a Reset-Free Polarization Controller for Fast Automatic Polarization Stabilization in Fiber-optic Transmission Systems” Apr. 1994, Journal of lightwave technology.
Gordon et al. “PMD fundmentals: Polarization mode dispersion in optical fibers”, Feb. 2000, Lucent Technologies.
Ip et al. “Digital Equalization of Chromatic Dispersion and Polarization Mode Dispersion”, Aug. 2007, Journal of lightwave technology.
Alcatel-Lucent USA Inc.
Leung Danny W
Rosenthal E. J.
Vanderpuye Ken N
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