Title :
In-Band OSNR Monitoring Technique Based on Link-by-Link Estimation for Dynamic Transparent Optical Networks
Author :
Lee, Jun Haeng ; Yoshikane, Noboru ; Tsuritani, Takehiro ; Otani, Tomohiro
Author_Institution :
KDDI R&D Labs. Inc., Fujimino
fDate :
5/15/2008 12:00:00 AM
Abstract :
A cost-effective optical performance monitoring system, based on link-by-link optical signal-to-noise ratio (OSNR) estimation, is proposed for a dynamic transparent optical network. The proposed technique estimates the OSNR by monitoring the channel powers at the input and output of each optical link and the total input power to the inline EDFAs. In-band OSNR monitoring was successfully demonstrated at 42.7 Gb/s RZ-DQPSK signals, reflecting the transmission performance.
Keywords :
differential phase shift keying; erbium; optical communication equipment; optical fibre amplifiers; optical fibre networks; optical information processing; optical signal detection; telecommunication channels; wavelength division multiplexing; JkJk:Er; RZ-DQPSK signal; bit rate 42.7 Gbit/s; channel power monitoring; cost-effective optical performance monitoring; dynamic transparent optical network; in-band OSNR monitoring; inline EDFA; link-by-link estimation; optical signal-to-noise ratio estimation; transmission performance; Condition monitoring; Costs; High speed optical techniques; Optical fiber networks; Optical noise; Optical polarization; Optical receivers; Optical transmitters; Signal to noise ratio; Wavelength division multiplexing; Optical performance monitoring (OPM); optical signal-to-noise ratio (OSNR); transparent optical network;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.917060
