Microdrilled tapers to enhance optical fiber lasers for sensing
Open Access
- 14 October 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 11 (1), 1-10
- https://doi.org/10.1038/s41598-021-00046-7
Abstract
In this work, an experimental analysis of the performance of different types of quasi-randomly distributed reflectors inscribed into a single-mode fiber as a sensing mirror is presented. These artificially-controlled backscattering fiber reflectors are used in short linear cavity fiber lasers. In particular, laser emission and sensor application features are analyzed when employing optical tapered fibers, micro-drilled optical fibers and 50 μm-waist or 100 μm-waist micro-drilled tapered fibers (MDTF). Single-wavelength laser with an output power level of about 8.2 dBm and an optical signal-to-noise ratio of 45 dB were measured when employing a 50 μm-waist micro-drilled tapered optical fiber. The achieved temperature sensitivities were similar to those of FBGs; however, the strain sensitivity improved more than one order of magnitude in comparison with FBG sensors, attaining slope sensitivities as good as 18.1 pm/με when using a 50 μm-waist MDTF as distributed reflector.Funding Information
- Agencia Estatal de Investigación (PID2019-107270RB, PID2019-107270RB, PID2019-107270RB, PID2019-107270RB, PID2019-107270RB, PID2019-107270RB, PID2019-107270RB)
- European Regional Development Fund
- Projects for young researches UPNA 2019 (PJUPNA1928, PJUPNA1928, PJUPNA1928, PJUPNA1928)
- Marie Skłodowska-Curie Grant (No 838143)
- Beatriz Galindo (BEAGAL18/00116 fellowship)
- Ministerio de Educación, Cultura y Deporte of Spain (PhD grant FPU2018/02797)
- Fundación Caja Navarra and Fundación la Caixa (proyect LCF/PR/PR13/51080004)
This publication has 17 references indexed in Scilit:
- Fibre Bragg Grating Based Strain Sensors: Review of Technology and ApplicationsSensors, 2018
- Optical fiber micro-devices made with femtosecond laserPublished by Optica Publishing Group ,2016
- “Fiber-Optic Cavities for Physical and Chemical Sensing”The Open Optics Journal, 2013
- Fiber Bragg Grating Sensors: Recent Advancements, Industrial Applications and Market ExploitationPublished by Bentham Science Publishers Ltd. ,2011
- Femtosecond laser micromachining in transparent materialsNature Photonics, 2008
- Current developments in fiber Bragg grating sensors and their applicationsPublished by SPIE-Intl Soc Optical Eng ,2008
- Strain sensitivity control of fiber Bragg grating structures with fused tapersApplied Optics, 2007
- Optical Fiber Sensor TechnologyPublished by Springer Science and Business Media LLC ,1998
- Multi-element Bragg-grating based fibre-laser strain sensorElectronics Letters, 1993
- Point-by-point fabrication of micro-Bragg gratings in photosensitive fibre using single excimer pulse refractive index modification techniquesElectronics Letters, 1993