abstract

• An experimental study of an all-fiber tunable thulium-doped fiber laser based on an abrupt-tapered in-fiber interferometer is presented. A microfiber filter with length of 6 mm and diameter of 20 μm is used to achieve single laser wavelength tuning in a range of 19.4 nm and dual-wavelength laser operation at 1761.8 and 1793.4 nm with a channel spacing of 31.6 nm. The abrupt-tapered structure allows multi-modal interference at the air-cladding interface. The proposed in-fiber interferometer exhibits characteristics of low cost and simple fabrication, making it suitable for practical applications in wavelength filtering and wavelength selection in all-fiber lasers. © 2017 IOP Publishing Ltd.

authors

• Bello Jimenez Miguel Ángel
• Durán-Sánchez M.
• Hernández-Arriaga M.V.
• Ibarra-Escamilla B.
• Kuzin E.A.
• Santiago-Hernández H.
• Álvarez-Tamayo R.I.

publication date

• 2017-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: 237855  Grant

published in

• Journal of Optics (United Kingdom)  Journal

keywords

• abrupt-tapered fiber; thulium-doped fiber; tunable wavelength laser Fiber lasers; Interferometers; Thulium; Dual wavelength laser; Microfiber filters; Tapered fiber; Tapered structure; Thulium-doped fibers; Tunable wavelength; Wavelength filtering; Wavelength selection; Fibers

Digital Object Identifier (DOI)

• 10.1088/2040-8986/aa8d03

start page

end page

volume

• 19

issue

• 11