PMD emulation, measurement and compensation device

Details PMD emulation, measurement and compensation device PMD emulation, measurement and compensation device

2006-02-07

2006-02-07

Palmer, Phan T. H. (Department: 2874)

Optical waveguides

Polarization without modulation

C359S483010

Reexamination Certificate

active

06996297

ABSTRACT:
A PMD emulation, measurement and compensation device is based upon an emulation device having a piece of fiber having a fixed differential group delay (DGD) and another short piece of fiber (or double refracting crystal) having a variable differential group delay (T-DGD). The two pieces of fiber are coupled with a non-zero torsional angle between their respective double refractive axes, preferably 45°. A fiber squeezer/stretcher is used to provide the variable DGD for the short piece of fiber. Various serial couplings of DGD and T-DGD fiber may be added to provide greater control and accuracy, with the torsional angles preferably alternating. Such an emulation device may be incorporated into a measurement device to measure the PMD-related distortion of an optical signal. Further the measurement device may be used in a PMD compensator where an emulation device in series with the optical signal path is controlled until the measured PMD in the PMD-related distorted optical signal is minimized.

REFERENCES:
patent: 5473457 (1995-12-01), Ono
patent: 5859939 (1999-01-01), Fee et al.
patent: 5930414 (1999-07-01), Fishman et al.
patent: 6381385 (2002-04-01), Watley et al.
patent: 6538787 (2003-03-01), Moeller et al.
patent: 6542650 (2003-04-01), Khosravani et al.
patent: 198 16 178 (1999-10-01), None
patent: 198 18 699 (1999-10-01), None
patent: 198 30 990 (2000-01-01), None
patent: 198 41 755 (2000-03-01), None
patent: 1 109 338 (2001-06-01), None
patent: WO 01/86333 (2001-11-01), None
patent: WO 02/07351 (2002-01-01), None
patent: WO 02/32023 (2002-04-01), None
Noe et al. “Ploarization Mode Dispersion Compensation at 10, 20, and 40 GB/S with Various Optical Equalizers,”Journal of Lightwave Technology, IEEE, New York, USA, 17(9) pp. 1602-1616 (Sep. 1999).
Hok Uong Pua et al. “An Adaptive First-Order Polarization-Mode Dispersion Compensation System Aided by Polarization Scrambling: theory and Demonstration,”Journal of Lightwave Technology, 18(6), pp. 832-841 (Jun. 2000).
Shimizu et al. “High Practical Fiber Squeezer Polarization Controller,” Journal of Lightwave Technology, 9(10), pp. 1217-1224 (Oct. 1991).

Affiliated with

Also associated with

Rating

PMD emulation, measurement and compensation device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PMD emulation, measurement and compensation device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PMD emulation, measurement and compensation device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3685355