Pérez Herrera, Rosa AnaTainta Ausejo, SantiagoErro Betrán, María JoséLópez-Amo Sáinz, Manuel2019-09-172019-09-172016R. A. Perez-Herrera, S. Tainta, M. J. Erro, and M. Lopez-Amo 'Modulated fiber ring laser and its application in high-sensitivity temperature sensors', Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160B (30 May 2016); https://doi.org/10.1117/12.22368470277-786X10.1117/12.2236847https://academica-e.unavarra.es/handle/2454/34837This work presents an experimental demonstration of a scheme based on an internally modulated fiber ring laser for high-sensitivity temperature sensing. The attained temperature resolution has been as low as ± 2pm even when a commercial FBG with a sensitivity of 10 pm/°C was used. Thus, a fivefold improvement in the temperature sensor resolution can be achieved when compared to a simple FBG interrogation scheme. In addition to this, the measuring range could be selected only by changing the frequency modulation of the fiber ring laser. This technology also allows to triple the photodiode bandwidth unambiguously when temperature or strain measurements are carried out, which is a remarkable achievement in term of cost reduction.4 p.application/pdfeng© 2016 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.Fiber ring laserTemperature sensorAmplitude modulationSingle-sideband modulationinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia