Fabry-Perot Interferometer Based on Suspended Core Fiber for Detection of Gaseous Ethanol

An optical fiber tip sensor based on a Fabry–Perot interferometer is proposed for the detection of ethanol in the gas phase. The sensor is fabricated by fusion splicing one end of the suspended core fiber to a single mode fiber, whereas the other end is kept open to enable the interaction between the light propagating in the suspended core and the ethanol gas molecules. The sensor was tested with different percentages of ethanol, exhibiting a linear response between 0 and 100 wt.%, with a sensitivity of 3.9 pm/wt.%. The proposed sensor, with a length of a few hundred micrometers, can be an alternative solution for the detection of gaseous ethanol in foods or beverages, such as wines and distilled drinks.

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Determination of temperature and strain by a compact optical fiber Mach-Zehnder interferometer (MZI) composed of a single-mode fiber (SMF), seven core fiber (SCF), and multimode fiber (MMF) with a fiber Bragg grating (FBG)

Instrumentation Science & Technology ◽

10.1080/10739149.2021.1884092 ◽

2021 ◽

pp. 1-13

Author(s):

Zhaojun Liu ◽

Lianqing Zhu ◽

Lidan Lu ◽

Chunmei Shangguan ◽

Dongliang Zhang ◽

...

Keyword(s):

Optical Fiber ◽

Fiber Bragg Grating ◽

Single Mode ◽

Single Mode Fiber ◽

Zehnder Interferometer ◽

Bragg Grating ◽

Multimode Fiber ◽

Core Fiber ◽

Mach Zehnder Interferometer

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A High Sensitivity Temperature Sensing Probe Based on Microfiber Fabry-Perot Interference

Sensors ◽

10.3390/s19081819 ◽

2019 ◽

Vol 19 (8) ◽

pp. 1819 ◽

Cited By ~ 11

Author(s):

Zhoubing Li ◽

Yue Zhang ◽

Chunqiao Ren ◽

Zhengqi Sui ◽

Jin Li

Keyword(s):

Low Cost ◽

High Sensitivity ◽

Single Mode ◽

Single Mode Fiber ◽

Temperature Sensing ◽

Compact Structure ◽

Fabry Perot ◽

Temperature Monitor ◽

Core Fiber ◽

Fitting In

In this paper, a miniature Fabry-Perot temperature probe was designed by using polydimethylsiloxane (PDMS) to encapsulate a microfiber in one cut of hollow core fiber (HCF). The microfiber tip and a common single mode fiber (SMF) end were used as the two reflectors of the Fabry-Perot interferometer. The temperature sensing performance was experimentally demonstrated with a sensitivity of 11.86 nm/°C and an excellent linear fitting in the range of 43–50 °C. This high sensitivity depends on the large thermal-expansion coefficient of PDMS. This temperature sensor can operate no higher than 200 °C limiting by the physicochemical properties of PDMS. The low cost, fast fabrication process, compact structure and outstanding resolution of less than 10−4 °C enable it being as a promising candidate for exploring the temperature monitor or controller with ultra-high sensitivity and precision.

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A Theoretical Study and Numerical Simulation of a Quasi-Distributed Sensor Based on the Low-Finesse Fabry-Perot Interferometer: Frequency-Division Multiplexing

10.20944/preprints201704.0001.v1 ◽

2017 ◽

Author(s):

José Trinidad Guillen Bonilla ◽

Alex Guillén-Bonilla ◽

Rodríguez-Betancourtt Veronica M. ◽

Héctor Guillen Bonilla ◽

Antonio Casillas Zamora

Keyword(s):

Optical Fiber ◽

Frequency Domain ◽

Signal To Noise Ratio ◽

Single Mode ◽

Optical Signal ◽

Single Mode Fiber ◽

Wavelength Shift ◽

Distributed Sensors ◽

Distributed Sensor ◽

Fabry Perot

The application of the sensors optical fiber in the areas of scientific instrumentation and industrial instrumentation is very attractive due to its numerous advantages. In the industry of civil engineering for example, quasi-distributed sensors made with optical fiber are used for reliable strain and temperature measurements. Here, a quasi-distributed sensor in the frequency domain is discussed. The sensor consists of a series of low-finesse Fabry-Perot interferometers where each Fabry-Perot interferometer acts as a local sensor. Fabry-Perot interferometers are formed by pairs of identical low reflective Bragg gratings imprinted in a single mode fiber. All interferometer sensors have different cavity length, provoking the frequency-domain multiplexing. The optical signal represents the superposition of all interference patterns which can be decomposed using the Fourier transform. The frequency spectrum is analyzed and sensor´s properties were defined. Following, a quasi-distributed sensor was numerically simulated. Our sensor simulation considers sensor properties, signal processing, noise system and instrumentation. The numerical results show the behavior of resolution vs. signal-to-noise ratio. From our results, the Fabry-Perot sensor has high resolution and low resolutions. Both resolutions are conceivable because the FDPA algorithm elaborates two evaluations of Bragg wavelength shift

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Highly sensitive optical fiber bending sensor based on hollow core fiber and single mode fiber

Optik ◽

10.1016/j.ijleo.2020.166209 ◽

2021 ◽

Vol 228 ◽

pp. 166209

Author(s):

Y.D. Niu ◽

Q. Chen ◽

Chunliu Zhao ◽

D.N. Wang

Keyword(s):

Optical Fiber ◽

Single Mode ◽

Single Mode Fiber ◽

Hollow Core ◽

Highly Sensitive ◽

Core Fiber ◽

Bending Sensor

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General Analysis on Output Characteristics of Single-mode Fiber Fabry-Perot Resonator with Birefringence

Journal of Optical Communications ◽

10.1515/joc.2007.28.3.180 ◽

2007 ◽

Vol 28 (3) ◽

Cited By ~ 2

Author(s):

Haiyan Chen

Keyword(s):

Single Mode ◽

Single Mode Fiber ◽

General Analysis ◽

Fabry Perot ◽

Output Characteristics

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Fiber-optic Michelson interferometer based on α-Fe2O3/ZrO2 sensing membrane and its application in trace fluoride-ion detection

Zeitschrift für Naturforschung A ◽

10.1515/zna-2021-0278 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Zizheng Yue ◽

Wenlin Feng

Keyword(s):

Silver Film ◽

Fiber Optic ◽

Michelson Interferometer ◽

Single Mode ◽

Single Mode Fiber ◽

Ion Concentration ◽

Fluoride Ion ◽

Ion Detection ◽

Core Fiber ◽

Sensing Membrane

Abstract In this work, a fiber-optic fluoride-ion-detection Michelson interferometer based on the thin-core fiber (TCF) and no-core fiber (NCF) coated with α-Fe2O3/ZrO2 sensing film is proposed and presented. The single-mode fiber (SMF) is spliced with the TCF and NCF in turn, and a waist-enlarged taper is spliced between them. Then, a silver film is plated on the end face of NCF to enhance the reflection. After the absorption of fluoride ion by the sensing film, the effective refractive index (RI) of the coated cladding will change, which leads to the regular red shift of the interference dip with the increasing fluoride-ion concentration. Thus, the fluoride-ion concentrations can be determined according to the corresponding dip wavelength shifts. The results show that the sensor has an excellent linear response (R 2 = 0.995) with good sensitivity (8.970 nm/ppm) when the fluoride-ion concentration is in the range of 0–1.5 ppm. The response time is about 15 s. The sensor has the advantage of good selectivity, good temperature and pH stabilities, and can be applied to detect fluoride ion effectively.

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Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

Optical Review ◽

10.1007/s10043-012-0014-x ◽

2012 ◽

Vol 19 (2) ◽

pp. 64-70 ◽

Cited By ~ 7

Author(s):

Hisham Kadhum Hisham ◽

Ahmad Fauzi Abas ◽

Ghafour Amouzad Mahdiraji ◽

Mohd Adzir Mahdi ◽

Ahmad Shukri Muhammad Noor

Keyword(s):

Signal Intensity ◽

Single Mode ◽

Single Mode Fiber ◽

Intensity Modulation ◽

Laser Source ◽

Fiber Grating ◽

Small Signal ◽

Fabry Perot

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Microdrilled tapers to enhance optical fiber lasers for sensing

Scientific Reports ◽

10.1038/s41598-021-00046-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

R. A. Perez-Herrera ◽

M. Bravo ◽

P. Roldan-Varona ◽

D. Leandro ◽

L. Rodriguez-Cobo ◽

...

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Fiber Lasers ◽

Signal To Noise Ratio ◽

Power Level ◽

Single Mode ◽

Optical Signal ◽

Single Mode Fiber ◽

Output Power Level ◽

Linear Cavity

AbstractIn 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.

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