Stable and wavelength-tunable erbium-doped fiber double-ring laser in S-band window operation

Abstract: A stable and tunable S-band erbium-doped fiber (EDF) double-ring laser has been proposed and experimentally demonstrated. Based on the double-ring configuration, the EDF ring laser exhibits more stable output wavelengths and powers than those of the single-ring. Wide tunable range of 1484–1518nm, the side-mode suppression ratio (SMSR) of larger than 44.7dB/0.05nm and the output power of larger than −2.2dBm over the operation range of 1484–1510nm have been retrieved. [Copyright &y& Elsevier]