Noise Reduction in Multiwavelength SOA-Based Ring Laser by Coupled Dual Cavities for WDM Applications

Author

Lee, Kwanil ; Lim, Sun Do ; Kim, Chul Han ; Lee, Ju Han ; Han, Young-Geun ; Lee, Sang Bae

Author_Institution

Korea Inst. of Sci. & Technol. (KIST), Seoul, South Korea

Volume

28

Issue

5

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

739

Lastpage

745

Abstract

A novel scheme for the suppression of intra- wavelength-channel mode competition in a multiwavelength SOA-based ring laser is proposed and experimentally demonstrated. The scheme is based on coupled ring cavities, which act as mode filters to suppress the side mode frequencies. The proposed scheme performance is evaluated in terms the output power, long term stability, and side-mode suppression ratio of the proposed SOA-based ring laser. A side mode suppression ratio lager than 10 dB is readily achieved by incorporating a subcavity inside a main ring cavity, due to Vernier effect induced by the coupled dual cavities. Also is investigated the possibility of the use of the noise-reduced multiwavelength laser as a transmitter light source within wavelength division-multiplexed passive optical network.

Keywords

interference filters; interference suppression; laser cavity resonators; laser mode locking; laser modes; laser noise; optical couplers; optical fibre networks; optical transmitters; ring lasers; semiconductor optical amplifiers; signal denoising; wavelength division multiplexing; Vernier effect; WDM applications; coupled dual cavities; coupled ring cavities; intra wavelength-channel mode; mode filters; multiwavelength SOA-based ring laser; noise reduction; passive optical network; side-mode suppression; transmitter light source; Multiwavlength fiber laser; Vernier effect; wavelength-division-multiplexed passive optical network (WDM-PON);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2009.2037928

Filename

5361375