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

Volume

17

Issue

1

fYear

2005

Firstpage

193

Lastpage

195

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.837745

Filename

1372627