Article
Engineering, Electrical & Electronic
Guanghao Dai, Dan Su, Xueguang Qiao
Summary: This study proposes and demonstrates a suspended fiber-optic Fabry-Perot interferometer for sensitivity-improved high-pressure measurement. By changing the length ratio, the sensitivity can be controlled and the advantages and accuracy of this technology are demonstrated through experiments.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Xinruo Yi, Kehao Zhao, Kevin P. Chen
Summary: This work presents multiplexable fiber optical sensors for multiple-point pH measurements. By using a femtosecond laser direct writing approach, an array of intrinsic Fabry-Peirot interferometer (IFPI) sensors was inscribed in standard single-mode fibers. A sol-gel dip coating process was employed to deposit Palladium-doped Titanium Dioxide (Pd-TiO2) sensory film on IFPI sensors for pH measurement, while an uncoated sensor was used to measure temperature of aquatic solutions to eliminate the influence of temperature fluctuation on pH measurements. Pd nanoparticles in the sensory films act as a catalyst to convert hydrogen ions in aquatic solutions to Pd hydride, which produces strains on IFPI sensors. White light interferometry demodulation algorithm was applied to resolve the strain exerted on IFPI sensors induced by pH value changes in aquatic solution. The presented sensor exhibited reversible and reproducible response in aquatic solutions with pH values ranging from 1.0 to 7.0 at room temperature. The response time of the pH sensors was approximately 7 seconds for all measurements conducted. The technology demonstrated in this paper has the potential to perform multi-point pH and temperature measurements using a single fiber.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Xia Li, Yu Li, Chenxiao Wang, Wa Jin, Guangwei Fu, Xinghu Fu, Weihong Bi
Summary: In this study, we conducted an experimental investigation on a highly sensitive, low-concentration chloride ion fiber-optic probe using a Fabry-Perot interferometer. By wet depositing a sensitive Ag/alginate nanocomposite film on the surface of the probe, the sensitivity of the probe was measured as 24.67 nm/% by observing the peak wavelength drift.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Electrical & Electronic
Rodolfo Martinez-Manuel, Jonathan Esquivel-Hernandez, Sophie LaRochelle
Summary: A novel method is presented to reduce the nonlinearity effect of a wavelength scanning diode laser in a low-reflectivity Fabry-Perot interferometer. The proposed method improves system resolution and achieves a temperature insensitive sensing system. It is demonstrated by measuring the thermo-optic coefficient of liquid samples and presenting long-term performance experimental results.
IEEE SENSORS JOURNAL
(2022)
Article
Multidisciplinary Sciences
Pablo Roldan-Varona, Rosa Ana Perez-Herrera, Luis Rodriguez-Cobo, Luis Reyes-Gonzalez, Manuel Lopez-Amo, Jose Miguel Lopez-Higuera
Summary: A novel optical fiber sensor capable of measuring liquid level and refractive index has been designed, manufactured and demonstrated in this work. By processing a silica capillary hollow-core fiber with a femtosecond laser, the system can achieve a high resolution of 4 mu m for liquid level measurement. In the future, it has the potential to measure the level of immiscible liquids as well.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Multidisciplinary
Hamed Moradi, Parviz Parvin, Ali Ojaghloo, Fatemeh Shahi
Summary: This study demonstrates a fiber optic Fabry-Perot interferometer (FPI) acoustic sensor based on a MoS2 membrane, which can detect acoustic signal frequency and pressure. By using MoS2 nano sheets as a sensitive membrane, the sensor achieved an acoustic sensitivity of 18.8 rad/Pa at 1 kHz and 100 mPa acoustic pressure.
Article
Engineering, Electrical & Electronic
Xue Zhou, Xuegang Li, Shuguang Li, Xin Yan, Xuenan Zhang, Fang Wang, Takenobu Suzuki, Yasutake Ohishi, Tonglei Cheng
Summary: The ultra-compact optical fiber temperature sensor proposed is based on the Fabry-Perot interference principle and fabricated using a simple dipping method. It has a high sensitivity, good linearity, stability, wide detection range, and short response time, making it suitable for real-time temperature detection in various environments.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Correction
Optics
Meng Ding, Eric Numkam Fokoua, John R. Hayes, Hesham Sakr, Peter Horak, Francesco Poletti, David J. Richardson, Radan Slavik
Summary: In the original publication of our research article, we found an error that needs to be corrected. We apologize for any confusion caused by this error. The correction does not affect the overall conclusions of the paper.
Article
Engineering, Electrical & Electronic
Zhuowei Xiang, Weiyu Dai, Weiying Rao, Xun Cai, Hongyan Fu
Summary: A high sensitive fiber-optic Fabry-Perot interferometer sensor based on gold diaphragm for acoustic detection is proposed and experimentally demonstrated in this paper. The sensor shows advantages of high sensitivity, wide flat response, low cost, and simple fabrication, suggesting its potential as a fiber optical microphone with high sensitivity and high acoustic quality in practical applications.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Sascha U. Kienitz, Marcel Staats, Laura Lohr, Jan Irsperger, Markus J. Schmid, Alexander W. Koch, Julien Weiss
Summary: The study examines the application of fiber optic pressure sensors to monitor aircraft aerodynamic characteristics in wind tunnel testing, showing that the sensors can effectively capture the dynamic behavior of boundary layer separation and vortex generation.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Analytical
Marjan Ghasemi, Jeongmin Oh, Sunghoon Jeong, Mingyu Lee, Saeed Bohlooli Darian, Kyunghwan Oh, Jun Ki Kim
Summary: We have developed a fiber-optic sensor based on the Fabry-Perot interferometer principles for the detection of blood clot formation. The sensor consists of two types of sensor tips: a tapered fiber and an ultra-compact blood FPI on a single-mode fiber. The sensor's performance was evaluated by introducing varying quantities of thrombin reagent into the blood and analyzing the resulting clot-formation-indicating spectrum shifts.
Article
Engineering, Electrical & Electronic
Siyu Lin, Yundong Zhang, Yanchen Qu, Fan Wang, Xiaopeng Han
Summary: In this paper, a miniature high-temperature fiber-optic sensor based on tip-packaged Fabry-Perot interferometer is proposed and demonstrated. The sensor is insensitive to changes in external refractive index and maintains good temperature sensing characteristics. Two packaging methods, using hollow core fiber (HCF) or single mode fiber (SMF), are proposed. The temperature sensitivities of these sensors increase due to the non-linear thermo-optic coefficient (TOC) of silicon. The repeatability and stability of the sensors are verified, making them suitable for practical engineering applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Electrical & Electronic
Lin Htein, Dinusha Serandi Gunawardena, Weng-Hong Chung, Ho-Yin Au, Hwa-Yaw Tam
Summary: The optical accelerometer developed with a new side-hole fiber in a Sagnac interferometric scheme shows high sensitivity, broad frequency range, and wide acceleration range. It has excellent linearity, low transverse sensitivity, and is suitable for dynamic acceleration range, making it a good candidate for acceleration/vibration sensing applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Zhihai Liu, Baichuan Zhao, Yu Zhang, Yaxun Zhang, Chunyu Sha, Jun Yang, Libo Yuan
Summary: A new method for fabricating a Fabry-Perot interferometer sensor using photopolymerizable materials is proposed and demonstrated in this study. By incorporating PDMS into the photopolymer material, the sensor is proven to have the ability to sense various parameters, with the relationship between PDMS concentration and temperature sensitivity being investigated.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Instruments & Instrumentation
Zhuoyue Li, Zengling Ran, Xianguo Qing, Zhengxi He, Yaqin Xiao, Tingting Yang, Xiu He, Jialiang Zhu, Peng He, Sijie Xu
Summary: The study found that the pressure sensitivity of FP sensors remained stable after irradiation, while the temperature sensitivity of FBG sensors was unstable and requires further research. This suggests the potential application of FP sensors in gamma radiation environments.
