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

• Main Authors: Ahmad, Harith, Mat Salim, Muhammad Aizi, Azzuhri, Saaidal Razalli, Jaddoa, Muwafaq Fadhil, Harun, Sulaiman Wadi
• Format: Article
• Published: OSA - The Optical Society 2016
• Subjects: QA Mathematics
• Online Access: http://eprints.utm.my/id/eprint/73925/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962171189&doi=10.1364%2fAO.55.000778&partnerID=40&md5=79b4ef968c6da3334891697e7e7d7716

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.