TONG Zheng-rong,YANG He,CAO Ye.Tunable and switchable dual-wavelength erbium-doped fiber laser based on in-line tapered fiber filters[J].Optoelectronics Letters,2016,12(4):264-267 Tunable and switchable dual-wavelength erbium-doped fiber laser based on in-line tapered fiber filters Author Name Affiliation TONG Zheng-rong  Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China  YANG He  Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China  CAO Ye  Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China  Abstract:       A tunable and switchable dual-wavelength erbium-doped fiber laser (EDFL) based on all-fiber single-mode tapered fiber structure has been demonstrated. By adjusting the variable optical attenuator (VOA), the laser can be switched between the single-wavelength mode and the dual-wavelength mode. When the temperature applied on the tapered fiber structure varies, the pass-band varies and the wavelength of the output laser shifts correspondingly. When the temperature changes from 30 °C to 180 °C, the central wavelength of the EDFL generated by branch A shifts from 1 550.7 nm to 1 560.3 nm, while that of branch B shifts from 1 530.8 nm to 1 540.4 nm, indicating the wavelength interval is tunable. These advantages enable this laser to be a potential candidate for high-capacity wavelength division multiplexing systems and mechanical sensors. Hits: 3758 Download times: 0 View Full Text    Download reader