Baker-Meflah, L and Thomsen, B and Mitchell, J and Bayvel, P (2008) Simultaneous chromatic dispersion, polarization-mode-dispersion and OSNR monitoring at 40Gbit/s. OPT EXPRESS , 16 (20) 15999 - 16004.
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Abstract
A novel method for independent and simultaneous monitoring of chromatic dispersion ( CD), first-order PMD and OSNR in 40Gbit/s systems is proposed and demonstrated. This is performed using in-band tone monitoring of 5GHz, optically down-converted to a low intermediate-frequency (IF) of 10kHz. The measurement provides a large monitoring range with good accuracies for CD (4742 +/- 100ps/nm), differential group delay (DGD) (200 +/- 4ps) and OSNR (23 +/- 1dB), independently of the bit-rate. In addition, the use of electro-absorption modulators (EAM) for the simultaneous down-conversion of all channels and the use of low-speed detectors makes it cost effective for multi-channel operation. (C) 2008 Optical Society of America
| Type: | Article |
|---|---|
| Title: | Simultaneous chromatic dispersion, polarization-mode-dispersion and OSNR monitoring at 40Gbit/s |
| Open access status: | An open access publication. A version is also available from UCL Discovery. |
| Publisher version: | http://www.opticsexpress.org |
| UCL classification: | UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering UCL > School of BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office |
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