Tunable S-band erbium-doped triple-ring laser with single-longitudinal-mode operation

• Published in: Optics express Vol. 15; no. 2; pp. 382 - 386
• Main Authors: Yeh, C-H, Huang, T T, Chien, H-C, Ko, C-H, Chi, S
• Format: Journal Article
• Language: English
• Published: United States 22-01-2007
• ISSN: 1094-4087; 1094-4087
• DOI: 10.1364/OE.15.000382

We propose and demonstrate a tunable and stable single-longitudinal-mode (SLM) erbium fiber laser with a passive triple-ring cavity structure in S-band operation. The proposed laser is fundamentally structured by using three different lengths of ring cavities, which serve as the mode filters. When a mode-restricting intracavity fiber Fabry-Perot tunable filter (FFP-TF) is combined, the proposed resonator can guarantee a tunable and stable SLM laser oscillation. Moreover, the performances of the output power, wavelength stability, tuning range, and side-mode suppression ratio (SMSR) are studied.