TY - GEN
T1 - Extending the range of measurement and the sensitivity response of Fabry-Perot interferometric sensors
AU - Martínez-Guerrero, María de los Ángeles
AU - Martínez-Manuel, Rodolfo
AU - Esquivel-Hernández, Jonathan
AU - Valentín-Coronado, Luis M.
AU - Kim, Jung Mu
N1 - Publisher Copyright:
© 2025 SPIE.
PY - 2025
Y1 - 2025
N2 - Two-wave interference fiber interferometers have a higher sensitivity response when they have longer optical path difference, which in exchange produce a short interference period; and this period ultimately limits the range of measurement due to the 2π phase ambiguity. In this work, a novel methodology is proposed to increase both the measurement range of an interferometric fiber sensor and its sensitivity response. In a first stage, for proof of concept, the measurement range is increased 15 times, which translates to an increase of measurement range from 23°C to 360°C. Furthermore, in a second stage, the Vernier effect is used to increase the sensitivity response by means of a virtual cavity used as a reference cavity. Here, the sensitivity response was increased by a factor of 15. This two-stage methodology is described by modeling and simulation, and demonstrated with experimental results. The importance of the methodology lies in the optimization of the performance of interferometric fiber sensors.
AB - Two-wave interference fiber interferometers have a higher sensitivity response when they have longer optical path difference, which in exchange produce a short interference period; and this period ultimately limits the range of measurement due to the 2π phase ambiguity. In this work, a novel methodology is proposed to increase both the measurement range of an interferometric fiber sensor and its sensitivity response. In a first stage, for proof of concept, the measurement range is increased 15 times, which translates to an increase of measurement range from 23°C to 360°C. Furthermore, in a second stage, the Vernier effect is used to increase the sensitivity response by means of a virtual cavity used as a reference cavity. Here, the sensitivity response was increased by a factor of 15. This two-stage methodology is described by modeling and simulation, and demonstrated with experimental results. The importance of the methodology lies in the optimization of the performance of interferometric fiber sensors.
KW - Fiber Fabry-Perot interferometers
KW - Measurement range
KW - Sensitivity response
KW - Vernier effect
UR - https://www.scopus.com/pages/publications/105007917784
U2 - 10.1117/12.3062321
DO - 10.1117/12.3062321
M3 - Conference paper
AN - SCOPUS:105007917784
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 29th International Conference on Optical Fiber Sensors
A2 - Santos, Jose Luis
A2 - Sainz, Manuel Lopez-Amo
A2 - Sun, Tong
PB - SPIE
T2 - 29th International Conference on Optical Fiber Sensors
Y2 - 25 May 2025 through 30 May 2025
ER -