abstract

• Switchable multi-wavelength laser emission from a thulium-doped all-fiber laser is reported by implementing a tapered and a non-tapered multi-modal interference (MMI) filters. The MMI structure relies on a coreless optical fiber spliced in between two single-mode optical fibers. For the non-tapered case, a minimum insertion loss of 12.60 dB is achieved around the 2-µm region, from which stable generation of commutable dual-wavelength emission at 1986.34 nm and 2017.38 nm is obtained. On the other hand, the tapered MMI structure performs a minimum insertion loss of 8.74 dB at the 2-µm region, allowing a stable triple-wavelength emission at 1995.4 nm, 2013.3 nm, and 2038.3 nm. In addition, commutable dual-wavelength emission was also obtained at 1997.9 nm and 2032.1 nm. The generated laser lines perform bandwidths of around 50 pm, low peak spectral power fluctuations and signal-to-noise ratio of 50 dB. © 2022 Elsevier Ltd

authors

• Andres M.V.
• Bello Jimenez Miguel Ángel
• Camarillo-Avilés A.
• Durán-Sánchez M.
• Hernández-Arriaga M.V.
• Ibarra-Escamilla B.
• López Estopier Rosa Elvia
• Pottiez O.

publication date

• 2022-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: 217560; Ciencia de Frontera 2019  Grant

published in

• Optics and Laser Technology  Journal

keywords

• Coreless optical fiber; Multi-wavelength emission; Multimodal interference; Thulium doped fiber

Digital Object Identifier (DOI)

• 10.1016/j.optlastec.2022.108231

PubMed ID

start page

end page

volume

• 153

issue