Dual-wavelength S-band erbium-doped fiber double-ring laser

C. H. Yeh, F. Y. Shih, Chi-Wai Chow, S. Chi

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We propose and demonstrate an S-band CW dual-wavelength erbium-doped fiber (EDF) dual-ring laser using a compound-ring filter (CRF) with various coupling losses inside the gain cavity. Employing a ring filter combined within the cavity, the fiber laser can lase a dual wavelength without any filter inside the ring loop. The dual-wavelength output exhibits a good performance having optical side-mode suppression ratios (SMSRs) of 31.6 and 31.8 dB and output powers of -9.6 and -9.3 dBm at 1505.58 and 1506.43 nm, respectively, when the coupling loss is 30% inside the cavity. In addition, the output stabilities of the dual-wavelength laser have also been analyzed.

Original languageEnglish
Pages (from-to)1553-1556
Number of pages4
JournalLaser Physics
Issue number12
StatePublished - 1 Dec 2008

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