Title :
All-optical chromatic dispersion monitoring of a 40-Gb/s RZ signal by measuring the XPM-generated optical tone power in a highly nonlinear fiber
Author :
Luo, T. ; Yu, C. ; Pan, Z. ; Wang, Y. ; McGeehan, J.E. ; Adler, M. ; Willner, A.E.
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We experimentally demonstrate an all-optical chromatic dispersion (CD) monitoring technique potential for ultrahigh-speed systems. A monochromatic continuous wave probe is coupled with the tapped-off data signal into a highly nonlinear fiber. An optical tone that is sensitive to CD is generated near the probe wavelength due to the cross-phase modulation effect and is used for CD monitoring. The monitoring window is ±42 ps/nm for 40-Gb/s return-to-zero systems. This monitoring technique is simple and needs no modification at the transmitter.
Keywords :
monitoring; optical fibre communication; optical fibre dispersion; optical modulation; phase modulation; 40 Gbit/s; RZ signal; XPM; chromatic dispersion monitoring; cross-phase modulation effect; highly nonlinear fiber; monochromatic continuous wave probe; optical tone power; return-to-zero systems; Chromatic dispersion; Couplings; Fiber nonlinear optics; Monitoring; Nonlinear optics; Optical modulation; Optical sensors; Optical transmitters; Power measurement; Probes; CD monitoring; Chromatic dispersion (CD); cross-phase modulation (XPM); highly nonlinear fiber; optical fiber communication;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.862359
