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

Volume

15

Issue

11

fYear

2003

Firstpage

1645

Lastpage

1647

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.818628

Filename

1237616