Title :
Experimental study on optically band-limited 40-Gb/s RZ signals with optically time-division demultiplexing receiver
Author :
Morita, Itsuro ; Tsuritani, Takehiro ; Edagawa, Noboru
Author_Institution :
KDDI R&D Labs., Saitama, Japan
fDate :
12/1/2002 12:00:00 AM
Abstract :
The impact of optical filtering on 40-Gb/s return-to-zero (RZ) signals was experimentally investigated with an optically time-division multiplexing (OTDM) receiver. Through the evaluation of the signal performance by changing the interpulse-phase conditions of the symmetrically band-limited 40-Gb/s signals, we have confirmed that similar performance was obtained regardless of the interpulse-phase condition, owing to the pulse-reshaping capability of an OTDM receiver. A performance comparison was also conducted between symmetrically and asymmetrically filtered 40-Gb/s RZ signals. It was found that the symmetrically filtered signal was more tolerant for the dispersion-compensation error, while the asymmetrically filtered signal was more tolerant for fiber nonlinearity with optical filters that have a 3-dB bandwidth of 45 GHz.
Keywords :
bandlimited signals; error compensation; optical fibre dispersion; optical fibre filters; optical pulse shaping; optical receivers; time division multiplexing; 3-dB bandwidth; 40 Gbit/s; 40-Gb/s RZ signals; 45 GHz; OTDM receiver; asymmetrically filtered RZ signals; dispersion-compensation error tolerance; fiber nonlinearity tolerance; interpulse phase conditions; optical filtering impact; optically band-limited signals; optically time-division multiplexing; performance comparison; pulse-reshaping capability; signal performance; spectral efficiency; symmetrically band-limited signals; symmetrically filtered RZ signals; Channel spacing; Demultiplexing; Filtering; Optical crosstalk; Optical fiber filters; Optical filters; Optical pulses; Optical receivers; Optical transmitters; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2002.806780
