Title :
Low-Cost Multiparameter Optical Performance Monitoring Based on Polarization Modulation
Author :
Sköld, Mats ; Olsson, Bengt-Erik ; Karlsson, Magnus ; Andrekson, Peter A.
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg
Abstract :
A novel technique to conduct optical performance monitoring of WDM networks is proposed, implemented, and evaluated. The method is based on channel-individual polarization modulation of the wavelength channels at the transmitter, which enables low-cost monitor nodes consisting only of one polarizer followed by low-speed electronics. Despite the few optical components, the channel Stokes vectors can be measured and subsequently channel power, wavelength, optical signal-to-noise ratio, differential group delay are obtained. The Stokes vector precision is measured to be 2deg (rms), channel power accuracy plusmn0.1 dB with a 20-dB dynamic range, and the wavelength accuracy is plusmn30 pm. The OPM system was implemented in the field to monitor five WDM channels in an 820-km-long installed transmission link.
Keywords :
optical fibre networks; optical fibre polarisation; optical fibre testing; optical modulation; optical polarisers; optical transmitters; wavelength division multiplexing; Stokes vector; WDM networks; differential group delay; distance 820 km; optical performance monitoring; optical polarizer; optical signal-to-noise ratio; optical transmitter; polarization modulation; wavelength channel; wavelength division multiplexing; wavelength measurement; Monitoring; Optical devices; Optical fiber networks; Optical modulation; Optical polarization; Optical transmitters; Power measurement; Signal to noise ratio; WDM networks; Wavelength measurement; Optical fiber communication; Stokes parameters; optical performance monitoring; optical signal-to-noise ratio (OSNR); polarization-mode dispersion; wavelength; wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.929116
