Dual wavelength single longitudinal mode Ytterbium-doped fiber laser using a dual-tapered Mach-Zehnder interferometerH. Ahmad, M. A. M. Salim, S. R. Azzuhri, M. Z. Zulkifli and S. W. HarunJ. Eur. Opt. Soc.-Rapid Publ., 10 (2015) 15013DOI: https://doi.org/10.2971/jeos.2015.15013