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A dual-wavelength fiber laser sensor with temperature and strain discrimination

Abstract: This work presents a dual-wavelength C-band erbium-doped fiber laser assisted by an artificial backscatter reflector. This fiber-based reflector, inscribed by femtosecond laser direct writing, was fabricated into a single mode fiber with a length of 32 mm. The dual-wavelength laser obtained, centered at 1527.7 nm and 1530.81 nm, showed an optical signal-to-noise ratio over 46 dB when pumped at 150 mW. Another feature of this laser was that the power difference between the two channels was just 0.02 dB, regardless of the pump power, resulting in a dual emission laser with high equalization. On the other hand, an output power level and a central wavelength instability as low as 0.3 dB and 0.01 nm were measured, in this order for both channels. Moreover, the threshold pump power was 40 mW. Finally, the performance of this dual-wavelength fiber laser enhanced with a random reflector for sensing applications was studied, achieving the simultaneous measurement of strain and temperature with sensitivities around 1 pm/ue and 9.29 pm/°C, respectively.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Sanchez-Gonzalez A., Perez-Herrera R.A., Roldan-Varona P., Duran-Escudero M., Rodriguez-Cobo L., Lopez-Higuera J.M., Lopez-Amo M.,

 Fuente: Sensors, 2022, 22(18), 6888

Editorial: MDPI

 Fecha de publicación: 13/09/2022

Nº de páginas: 10

Tipo de publicación: Artículo de Revista

 DOI: 10.3390/s22186888

ISSN: 1424-8220

Proyecto español: PID2019-107270RB-C21

Autores/as

SÁNCHEZ HERRERA, ARTURO

ROSA ANA PEREZ HERRERA

DURÁN ESCUDERO, MIGUEL

LÓPEZ AMO, MANUEL