Dual-Wavelength Erbium-Doped Fiber Compound Ring Laser without Filter in Ring Cavity

摘要

A dual-wavelength erbium-doped fiber (EDF) compound ring laser using a double-ring filter (DRF) is proposed and demonstrated experimentally. By using a ring filter incorporated within the ring cavity, the fiber laser can lase two wavelengths simultaneously. This dual-wavelength output exhibits a good performance having the optical side-mode suppression ratios (SMSRs) of 45.3 and 46.3 dB and output powers of ?8.1 and ?7.1 dBm, respectively. In addition, the optical output stability of the ring laser has been also discussed.