Title :
Beat induced crosstalk reduction against wavelength difference between signal and four-wave mixing lights in unequal channel spacing WDM transmission
Author :
Hamazumi, Yoshiyuki ; Koga, Masafumi ; Sato, Ken-Ichi
Author_Institution :
NTT Opt. Network Syst. Labs., Kanagawa, Japan
fDate :
5/1/1996 12:00:00 AM
Abstract :
The reduction in the beat induced crosstalk caused by four-wave mixing (FWM) as a function of the wavelength difference between the signal light and FWM light is experimentally elucidated for wavelength division multiplexing (WDM) transmission employing unequal channel spacing. Experimental results show that the wavelength difference must be 2.7 times the bit rate in order to reduce the beat induced crosstalk due to FWM even if direct intensity-modulation whose power spectrum is extended by laser chirping is employed.
Keywords :
multiwave mixing; optical crosstalk; optical fibre communication; wavelength division multiplexing; FWM light; WDM transmission; beat induced crosstalk; direct intensity modulation; four-wave mixing; laser chirping; power spectrum; signal light; unequal channel spacing; wavelength difference; wavelength division multiplexing; Arrayed waveguide gratings; Bandwidth; Crosstalk; Four-wave mixing; Intensity modulation; Noise measurement; Optical modulation; Power measurement; Signal analysis; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
