Title :
Optical beat noise reduction in subcarrier multiplexed optical link using dual current modulation of master and slave lasers
Author :
Won, Yong-Yuk ; Jung, Hyun-Do ; Han, Sang-Kook ; Jung, Eui-Suk ; Kim, Byung-Whi
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
A novel method to reduce optical beat noise (OBN) which is critical in subcarrier multiplexed-based optical access link is suggested. The chirped optical signal was generated by using dual current modulation through master and slave lasers. The sidelobes of the slave laser decreased up to -90 dBm close to the noise floor. The OBN was reduced by 20 dB because of the spectral broadening of the slave laser resulted from the increased chirp.
Keywords :
chirp modulation; optical fibre communication; optical modulation; optical noise; subcarrier multiplexing; chirped optical signal generation; dual current modulation; master laser; optical beat noise reduction; slave laser; spectral broadening; subcarrier multiplexed optical link; Chirp modulation; Laser noise; Master-slave; Noise reduction; Optical fiber communication; Optical modulation; Optical noise; Optical pumping; Optical receivers; Passive optical networks; Dual current modulation; master laser; optical beat interference (OBI); optical beat noise (OBN); slave laser; subcarrier multiplexing (SCM); wavelength-division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.837745
