Title :
OSNR monitoring technique using polarization-nulling method
Author :
Lee, J.H. ; Jung, D.K. ; Kim, C.H. ; Chung, Y.C.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
We report on the simple technique for monitoring the optical signal-to-noise ratios (OSNRs) of wavelength-division-multiplexed (WDM) signals. This technique, based on the polarization-nulling method, was implemented simply by using a rotating quarter-wave plate and rotating linear polarizer. However, the performance of this technique could be affected by nonlinear birefringence and polarization-mode dispersion (PMD). The result shows that this technique is suitable for monitoring the OSNRs of highspeed (>10-Gb/s) WDM signals transported over the fiber link with low PMD.
Keywords :
birefringence; noise measurement; optical fibre dispersion; optical fibre polarisation; optical variables measurement; wavelength division multiplexing; 10 Gbit/s; OSNR monitoring technique; WDM signals; fiber link; nonlinear birefringence; optical signal-to-noise ratios; polarization-mode dispersion; polarization-nulling method; rotating linear polarizer; rotating quarter-wave plate; wavelength-division-multiplexed signals; Birefringence; Fiber nonlinear optics; Monitoring; Nonlinear optics; Optical fiber polarization; Optical noise; Optical polarization; Optical retarders; Signal to noise ratio; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
