Title :
Spectrally efficient optical label insertion/extraction technique using an optical single sideband filter
Author :
Fonseca, D. ; Cartaxo, A.V.T. ; Monteiro, P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Inst. Superior Tecnico, Lisboa
fDate :
7/1/2006 12:00:00 AM
Abstract :
A novel label insertion technique, using an adaptive optical single sideband (OSSB) filter, is experimentally shown. The OSSB filter is used to suppress one of the sidebands of the 40-Gb/s payload signal, and a 2.5-Gb/s intensity modulated signal is inserted as a label in the suppressed sideband. Lower label-payload crosstalk is observed using the OSSB filter compared to the absence of sideband suppression, allowing a reduction of 5 dB in the label power without additional penalty. The enhanced tolerance to group velocity dispersion (GVD) of the payload is experimentally assessed and a 5-dB penalty is observed for 136 ps/nm of accumulated dispersion. Additionally, simulation results show the efficient use of electrical dispersion compensation to improve the GVD tolerance, allowing the doubling of the dispersion tolerance
Keywords :
adaptive filters; intensity modulation; optical communication equipment; optical fibre communication; optical filters; optical modulation; packet switching; 2.5 Gbit/s; 40 Gbit/s; adaptive optical single sideband filter; crosstalk; electrical dispersion compensation; extraction; group velocity dispersion; intensity modulated signal; optical label insertion; payload signal; Adaptive filters; Adaptive optics; Amplitude modulation; Filtering; Intensity modulation; Optical crosstalk; Optical filters; Optical modulation; Payloads; Telecommunications; Label switching; optical single sideband (OSSB) signal; spectrally efficient modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.877563
