Title :
Influence of extinction ratio of clock modulator on dispersion tolerance of carrier suppressed return to zero signals
Author :
Choudhary, S. ; Hoshida, T.
Author_Institution :
Photonics Networking Lab., Fujitsu Network Commun. Inc, Richardson, TX, USA
Abstract :
We have demonstrated the dependence of dispersion tolerance on extinction ratio of the clock modulator in conventional CS-RZ modulators. We have also proposed a new configuration for CS-RZ modulator, which uses a notch filter to suppress the residual carrier component of the signal. With this configuration the effect of extinction ratio on dispersion tolerance is reduced and we can use modulators with extinction ratios of 10 dB to achieve dispersion tolerance comparable to that obtained with the conventional scheme having a high extinction ratio of clock modulator
Keywords :
Mach-Zehnder interferometers; optical fibre dispersion; optical fibre networks; optical modulation; phase modulation; wavelength division multiplexing; 43 Gbit/s; DWDM transmission; Mach-Zehnder interferometer; Q factors; carrier suppressed return to zero signals; clock modulator; concatenation; dispersion tolerance; extinction ratio influence; optical notch filter; optical signal to noise ratio; residual carrier component; Bit rate; Chirp modulation; Clocks; Extinction ratio; Optical fiber dispersion; Optical modulation; Optical noise; Optical signal processing; Optical transmitters; Signal to noise ratio;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.968996
