Title :
Design rule of wavelength filter bandwidth and pulsewidth for ultimate spectral efficiency limited by crosstalk in DWDM systems
Author :
Suzuki, Shuichi ; Kokubun, Yasuo
Author_Institution :
Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ., Hodogayaku, Japan
Abstract :
The relationship between the spectral efficiency and the crosstalk caused by the wavelength filter in DWDM systems was investigated. The bit rate and the wavelength channel spacing were optimally designed to minimize both the interchannel crosstalk and the intersymbol interference. We showed that the coherent crosstalk occurs at the frequency of about half of the channel spacing and it strongly deteriorates the total crosstalk.
Keywords :
channel spacing; intersymbol interference; optical crosstalk; optical fibre communication; optical fibre filters; wavelength division multiplexing; DWDM systems; bit rate; coherent crosstalk; design rule; interchannel crosstalk; intersymbol interference; pulsewidth; total crosstalk; ultimate spectral efficiency; wavelength channel spacing; wavelength filter bandwidth; Bandwidth; Bit rate; Channel spacing; Crosstalk; Frequency; Intersymbol interference; Optical filters; Optical transmitters; Space vector pulse width modulation; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818628
