Switchable dual-wavelength erbium-doped fiber laser with tunable wavelength

• 作 者: 童峥嵘 刘梦颖 曹晔 张卫华 郝霞
• 机 构: Tianjin Key Laboratory of Film Electronic and Communication Devices,Tianjin University of Technology
• 出 处: Optoelectronics Letters
• 发表日期: 2004年期
• 关键词: tunable spherical branches branch Bragg grating switched lasing adjusting cascad

A switchable dual-wavelength erbium-doped fiber laser(EDFL) with tunable wavelength is demonstrated. The ring cavity consists of two branches with a fiber Bragg grating(FBG) and a spherical-shape structure as fiber filters, respectively. By adjusting the variable optical attenuator(VOA), the laser can be switched between the single-wavelength mode and the dual-wavelength mode. The spherical-shape structure has good sensitivity to the temperature. When the temperature changes from 30 °C to 190 °C, the central wavelength of the EDFL generated by the branch of spherical-shape structure varies from 1 551.6 nm to 1 561.8 nm, which means that the wavelength interval is tunable.

A switchable dual-wavelength erbium-doped fiber laser (EDFL) with tunable wavelength is demonstrated. The ring cavity consists of two branches with a fiber Bragg grating (FBG) and a spherical-shape structure as a fiber filter, respectively. By adjusting the variable The spherical-shape structure has good sensitivity to the temperature. When the temperature changes from 30 ° C to 190 ° C, the laser can be switched between the single-wavelength mode and the dual-wavelength mode. central wavelength of the EDFL generated by the branch of spherical-shape structure varies from 1 551.6 nm to 1 561.8 nm, which means that the wavelength interval is tunable.