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.
Bibliographical noteFunding Information:
Manuscript received May 4, 2004; revised August 2, 2004. This work was supported by Korean Ministry of Information and Communication through ETRI. Y.-Y. Won, H.-D. Jung, and S.-K. Han are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: firstname.lastname@example.org). E.-S. Jung and B.-W. Kim are with the Electronics and Telecommunication Research Institute, Daejeon 305-350, Korea. Digital Object Identifier 10.1109/LPT.2004.837745 Fig. 1. Schematic of the chirped optical signal generation using dual pump current modulation by master and slave lasers.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering