Tapered fibre Mach-Zehnder interferometer for simultaneous measurement of liquid level and temperature

Chen, T.; Chen, R.; Lu, Ping; Chen, Q.; Chen, Kevin P.

doi:10.1049/el.2011.2082

Cited by 42 publications

(14 citation statements)

References 7 publications

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“…The resultant temperature and RI sensitivities are 23.188 nm/RIU (refractive index unit) and 0.071 nm/ • C, and 26.087 nm/RIU and 0.077 nm/ • C for different interference orders, which paves a way for multi-parameter sensing using the tapered structures. Temperature and liquid level discrimination was also realized in the later work [42].…”

Section: Short Tapermentioning

confidence: 95%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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Recent developments in fiber-optic sensing have involved booming research in the design and manufacturing of novel micro-structured optical fiber devices. From the conventional tapered fiber architectures to the novel micro-machined devices by advanced laser systems, thousands of micro-structured fiber-optic sensors have been proposed and fabricated for applications in measuring temperature, strain, refractive index (RI), electric current, displacement, bending, acceleration, force, rotation, acoustic, and magnetic field. The renowned and unparalleled merits of sensors-based micro-machined optical fibers including small footprint, light weight, immunity to electromagnetic interferences, durability to harsh environment, capability of remote control, and flexibility of directly embedding into the structured system have placed them in highly demand for practical use in diverse industries. With the rapid advancement in micro-technology, micro-structured fiber sensors have benefitted from the trends of possessing high performance, versatilities and spatial miniaturization. Here, we comprehensively review the recent progress in the micro-structured fiber-optic sensors with a variety of architectures regarding their fabrications, waveguide properties and sensing applications.

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Section: Short Tapermentioning

confidence: 95%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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“…3b plots the sum of all cosines for nine modes from LP to LP 010 at 1550 nm against different taper waist diameters. The maximum of 9 occurs at 37 µm where the phase-matching condition at (11) satisfies for all the HOMs. Fig.…”

Section: B Geometry Design For Single Wavelengthmentioning

confidence: 99%

“…In comparison, fiber tapers can be quickly fabricated using common fusion splicers. The double taper Mach-Zehnder Interferometer (DTMZI) has been studied as an easily configurable sensing device to sense the strain [9], refractive index (RI) [10], and temperature [11]. On the contrary, the interrogation systems introduced in the strain sensing using DTMZIs includes a broadband source (BBS) as the light source and an optical spectrum analyzer (OSA) to record the spectral variances in the forms of wavelength shifts, which limits the practicality of these type of sensors.…”

Section: Introductionmentioning

confidence: 99%

Single Wavelength Strain Sensing Based on Double Taper Mach-Zehnder Interferometer

Ghasemi

Yam

2021

IEEE J. Select. Topics Quantum Electron.

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A novel interrogation method is presented in the application of strain sensing with a double taper Mach-Zehnder interferometer (DTMZI). The proposed sensing setup comprises a laser source and an optical power meter, which significantly lowers future integration cost and complexity. An analytical coupling model is established to study the sensor's strain-related modal behaviour. The design parameters of the DTMZI device are conditioned to satisfy a single-wavelength measurement. The spectral responses of several fabricated sensors are examined. Our experiments confirm the direct mapping between different strain values and particular transmission measures for the single wavelength case.

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“…This fully distributed sensing capability makes continuous level sensors a preferred solution for many applications. For the continuous level sensors, the interference scheme based on long period gratings (LPGs) [4], fiber Bragg gratings (FBGs) [5]- [8], fiber Fabry-Pérots (FPs) [8], fiber Michelson [9]- [11], fiber Sagnac [12], and multimode fiber interferometers [13] had been proposed. The sensitivities represented in the previous works are about 0.15 nm/cm [6], 0.06 nm/cm [7], 0.01491 nm/cm [8], 0.0021 nm/cm [11], and 0.047 nm/cm [12], respectively.…”

Section: Highly Sensitive Tapered Fiber Mach-zehndermentioning

confidence: 99%

Highly Sensitive Tapered Fiber Mach–Zehnder Interferometer for Liquid Level Sensing

Hsu

Lee

Chang

et al. 2013

IEEE Photon. Technol. Lett.

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A low cost, simple, and in-line liquid level sensor based on a dual-tapered fiber Mach-Zehnder interferometer (DTFMZI) is proposed. In this letter, the configuration, operation principle, experimental results, and discussion for the proposed fiber-optic liquid level sensor are investigated. Experimental results show that the proposed DTFMZI sensor is highly sensitive and linear in the response; a good sensitivity of ∼2.8 nm/cm within the whole measurement range of 10 cm is achieved in this letter.Index Terms-Optical fiber sensors, optical interferometry, fiber Mach-Zehnder interferometer (FMZI), fiber-optics component.

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Tapered fibre Mach-Zehnder interferometer for simultaneous measurement of liquid level and temperature

Cited by 42 publications

References 7 publications

Recent Developments in Micro-Structured Fiber Optic Sensors

Recent Developments in Micro-Structured Fiber Optic Sensors

Single Wavelength Strain Sensing Based on Double Taper Mach-Zehnder Interferometer

Highly Sensitive Tapered Fiber Mach–Zehnder Interferometer for Liquid Level Sensing

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