Applying self-injection and dual-ring based fiber laser for wide tunability and stable single-frequency output. (May 2021)

• Record Type: Journal Article
• Authors: Lin, Yuan-Zeng; Yen, Po-Ming; Huang, Bo-Wei; Yeh, Chien-Hung; Chow, Chi-Wai; Hsu, Wei-Hung; Wang, Bo-Yin; Chen, Jing-Heng
• Is Part Of: Optics & laser technology. Volume 137(2021)
• Publication Date: 2021-05
• Subjects: Erbium-doped fiber (EDF) -- Fiber laser -- Single-longitudinal-mode -- Tunability; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2020.106804
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: A self-injected EDF dual-fiber-ring laser is demonstrated. A tuning bandwidth can be accomplished covering both C- and L-bands based on a C-band EDFA. Stable SLM oscillation can be obtained by the proposed laser scheme. Achieved laser linewidth is 2 kHz over the whole tuning bandwidth. Abstract: In the work, a self-injected erbium-doped fiber (EDF) dual-fiber-ring (DFR) laser configuration for wavelength-adjustable and stable single-longitudinal-mode (SLM) output is experimentally demonstrated. The tuning wavelength bandwidth can be accomplished from 1519.0 to 1588.0 nm covering both C- and L-bands based on the DFR scheme and self-injected loop, when a C-band EDF is exploited as the gain medium. In addition, the output power, laser linewidth and optical signal to noise ratio (OSNR) of the EDF laser are also studied and discussed. Thus, the designed EDF laser not only can narrow the wavelength linewidth for SLM oscillation, but also can broaden the available tuning bandwidth.