Title :
Postdetection Adjustable Simultaneous Compensation of DGD and GVD in a 40-Gb/s Optical Single-Sideband System
Author :
Madureira, M.A.M. ; Fonseca, D. ; Sousa, R. ; Violas, M.. ; Aguiar, R.L. ; Cartaxo, A.V.T. ; Monteiro, P.M.P.
Author_Institution :
Nokia Siemens Networks Portugal, Amadora
Abstract :
Results on postdetection compensation of group velocity dispersion (GVD) and differential group delay (DGD) in a 40-Gb/s optical single-sideband system are presented. An electrically adjustable transversal filter structure and a microstrip line are used as electrical compensators. Our results show that 408 ps/nm of GVD or 18 ps of DGD, considered separately, are compensated with less than 1.3-dB optical signal-to-noise ratio (OSNR) penalty to back-to-back without compensator, for an extinction ratio (ER) of 6 dB. The simultaneous effect of 12.3 ps of DGD and 374 ps/nm of GVD is compensated with less than 2-dB OSNR penalty, also for ER of 6 dB. Simulations performed support the experimental results.
Keywords :
delays; optical communication equipment; optical fibre communication; optical fibre dispersion; optical filters; adjustable simultaneous compensation; bit rate 40 Gbit/s; differential group delay; electrical compensators; electrically adjustable transversal filter; group velocity dispersion; microstrip line; optical signal-to-noise ratio penalty; optical single-sideband system; postdetection compensation; time 12.3 ps; time 18 ps; Amplitude modulation; Delay; Optical fiber dispersion; Optical filters; Optical modulation; Optical noise; Research and development; Signal to noise ratio; Telecommunications; Transversal filters; Compensation; optical fiber dispersion; optical single-sideband (OSSB); transversal filters (TFs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.902996
