Title :
All-optical in-band OSNR monitoring at 40 Gb/s using a nonlinear optical loop mirror
Author :
Adams, Rhys ; Rochette, Martin ; Ng, Trina T. ; Eggleton, Benjamin J.
Author_Institution :
Centre for Ultrahigh Bandwidth Devices for Opt. Syst., Univ. of Sydney, NSW
Abstract :
We present an all-optical in-band optical signal-to-noise ratio (OSNR) monitor using a nonlinear optical loop mirror. Monitoring is enabled from the nonlinear power transfer function of the loop mirror. Experimental results are provided at 40 Gb/s for three modulation formats: nonreturn-to-zero, carrier-suppressed return-to-zero, and return-to-zero. The monitor discriminates the various OSNR levels over a dynamic range of more than 25 dB with every modulation format
Keywords :
mirrors; monitoring; nonlinear optics; optical fibre communication; optical modulation; optical noise; 40 Gbit/s; carrier-suppressed return-to-zero modulation; in-band OSNR monitoring; nonlinear optical loop mirror; nonlinear power transfer function; nonreturn-to-zero modulation; optical signal-to-noise ratio; return-to-zero modulation; Fiber nonlinear optics; Mirrors; Monitoring; Nonlinear optics; Optical modulation; Optical noise; Optical signal processing; Semiconductor device noise; Signal to noise ratio; Ultrafast optics; In-band optical signal-to-noise ratio (OSNR) monitoring; nonlinear optics; optical performance monitoring; ultrafast optics;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.863641
