Title :
Fiber chromatic dispersion and polarization-mode dispersion monitoring using coherent detection
Author :
Fu, Biao ; Hui, Rongqing
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Kansas, Lawrence, KS, USA
fDate :
7/1/2005 12:00:00 AM
Abstract :
We propose and experimentally demonstrate a nondestructive method to monitor chromatic dispersion (CD) and polarization-mode dispersion (PMD) in traffic-carrying wavelength-division-multiplexing optical systems. Coherent heterodyne detection is used to down convert the spectrum of digitally modulated signal from optical domain into radio-frequency (RF) domain. By analyzing group delay difference and polarization walkoff between different frequency components through proper RF signal processing, both CD and PMD can be precisely determined. Good agreement between experimental results and theoretical values has been obtained.
Keywords :
heterodyne detection; microwave photonics; monitoring; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical frequency conversion; optical modulation; telecommunication traffic; wavelength division multiplexing; RF signal processing; coherent heterodyne detection; digitally modulated signal; fiber chromatic dispersion; group delay difference; polarization walkoff; polarization-mode dispersion monitoring; spectrum downconversion; traffic-carrying wavelength-division-multiplexing optical systems; Chromatic dispersion; Digital modulation; Monitoring; Optical fiber polarization; Optical mixing; Optical modulation; Optical signal processing; Polarization mode dispersion; RF signals; Radio frequency; Chromatic dispersion monitoring; coherent detection; heterodyne; optical communication; polarization-mode dispersion (PMD) monitoring; radio-frequency (RF) signal processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.849984
