Tunable dual-wavelength ytterbium-doped fiber laser using a strain technique on microfiber Mach–Zehnder interferometer

• DOI: 10.1364/ao.55.000778
• Publication Date: 2016-01-21T23:00:51Z
• Authors: H. Ahmad; M. A. M. Salim; Saaidal R. Azzuhri; M. F. Jaddoa; S. W. Harun
• Keywords: QC Physics; 0202 electrical engineering, electronic engineering, information engineering; QA Mathematics; 02 engineering and technology; TK Electrical engineering. Electronics Nuclear engineering

In this paper, stable dual-wavelength generation using a strain technique for a ytterbium-doped fiber laser is successfully demonstrated. A microfiber-based Mach-Zehnder interferometer is inserted into the laser ring cavity and stretched using the xyz translation stage. Four sets of dual-wavelength output lasing are obtained when the strain is applied onto a microfiber. The dual-wavelength output possesses spacing between 7.12 and 11.59 nm, with displacement from 2 to 190 μm from the central wavelength. The obtained side-mode suppression ratio is ∼48 dBm, while the maximum power fluctuation and wavelength shift are less than 0.6 dB and 0.01 nm, respectively. The results demonstrate that this setup generates a stable dual-wavelength laser in the 1 μm region.