Adiabatic tapered optical fiber Fabry-Perot structure as a refractive index sensor

O. R. Ranjbar-Naeini; Z. Chenari; P. Zarafshani; F. Jafari; H. Latifi

doi:10.1117/12.2265807

23 April 2017 Adiabatic tapered optical fiber Fabry-Perot structure as a refractive index sensor

O. R. Ranjbar-Naeini, Z. Chenari, P. Zarafshani, F. Jafari, H. Latifi

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103234N (2017) https://doi.org/10.1117/12.2265807
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

In this article, an Adiabatic Tapered Optical Fiber -- Fabry Perot (ATOF-FP) Sensor is introduced as a simple refractive index sensor. This FP Cavity relies upon reflection from two cleave ends of ATOF sensor’s arms. Its spectrum was investigated with Distributed Feedback (DFB) tunable laser and photo detector. With analyzing the change in Optical Transmission Power (OTP) versus refractive index changes, the sensitivity of ATOF was -66.21 dB/RIU. In addition, the visibility of FP was studied. Its RI sensitivity was -0.975 1/RIU. The sensor resolution was 2.3 × 10^-5 RIU with consideration of minimum detectable signal of acquisition system.

Citation Download Citation

O. R. Ranjbar-Naeini, Z. Chenari, P. Zarafshani, F. Jafari, and H. Latifi "Adiabatic tapered optical fiber Fabry-Perot structure as a refractive index sensor", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103234N (23 April 2017); https://doi.org/10.1117/12.2265807

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