Optical fiber temperature sensor based on a Mach-Zehnder interferometer with single-mode-thin-core-single-mode fiber structure

Wang, Qingzhuo; Meng, Hongyun; Fan, Xiaofeng; Zhou, Min-Bo; Li, Fengxiang; Liu, Chunyang; Wei, Zhongchao; Wang, Faqiang; Tan, Chunhua

doi:10.1063/1.5128485

Cited by 26 publications

(8 citation statements)

References 30 publications

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“…Furthermore, several optical interferometric methods such as classical interferometry [5,6,35,36], holographic interferometry [22][23][24]37], moiré deflectometry [38], speckle shearing interferometry [39], shearing interferometry [40,41], Talbot interferometry (TI) [42,43], Lau phase interferometry (LPI) [44], digital speckle pattern interferometry (DSPI) [45], holo-shear lens based lateral shear interferometry [46][47][48], and DHI [49][50][51][52][53][54][55][56][57][58] have been investigated to measure the temperature field inside the axi-symmetric gaseous flames and transparent hot objects. TI, Moiré deflectometry, lateral shear interferometry, and holo-shear lens-based interferometry are common path interferometric methods and hence these methods are relatively less sensitive to vibrations or external perturbations as compared to speckle shearing interferometry, HI, and DHI.…”

Section: Introductionmentioning

confidence: 99%

Applications of Digital Holographic Interferometry in Heat Transfer Measurements from Heated Industrial Objects

Kumar¹,

Shakher²

2023

Holography - Recent Advances and Applications

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Digital holographic interferometry (DHI) is used worldwide for many scientific and industrial applications. In DHI, two digital holograms; one in the reference/ambient state of the object and another in changed state of object are recorded by electronic imaging sensors (such as CCD/CMOS) as reference holograms and object holograms, respectively. Phase of object wavefronts in different states of the object is numerically reconstructed from digital holograms. The interference phase is reconstructed by subtracting the phase of reference hologram from the phase of object hologram, without performing any phase-shifting interferometry. Thus, no extra effort is needed in DHI for calculating the interference phase. Apart from direct reconstruction of interference phase from two digital holograms, the recent development, availability of recording devices at video rate, and high-performance computers make the measurements faster, reliable, robust, and even real-time. In this chapter, DHI is presented for the investigation of temperature distribution and heat transfer parameters such as natural convective heat transfer coefficient and local heat flux around the surface of industrial heated objects such as cylindrical wires and heat sinks.

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Section: Introductionmentioning

confidence: 99%

Applications of Digital Holographic Interferometry in Heat Transfer Measurements from Heated Industrial Objects

Kumar¹,

Shakher²

2023

Holography - Recent Advances and Applications

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“…Multimodal Interference (MMI) devices based on optical fibers have been extensively investigated and act as sensors in recent years for different applications, such as temperature [10], strain [11][12][13], air pressure [14], vibration [15], gasohol quality [16], structure health monitoring [17], flow rate [18,19], and so on. There exist several types of MMI structures, such as the Sagnac Interferometer [20], Fabry-Perot Interferometer [21], and Singlemode-Multimode-Singlemode (SMS) [22].…”

Section: Introductionmentioning

confidence: 99%

A Simple Optical Sensor Based on Multimodal Interference Superimposed on Additive Manufacturing for Diameter Measurement

Cardoso

Caldas

Giraldi

et al. 2022

Sensors

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In many areas, the analysis of a cylindrical structure is necessary, and a form to analyze it is by evaluating the diameter changes. Some areas can be cited: pipelines for oil or gas distribution and radial growth of trees whose diameter changes are directly related to irrigation and the radial expansion since it depends on the water soil deficit. For some species, these radial variations can change in around 5 mm. This paper proposes and experimentally investigates a sensor based on a core diameter mismatch technique for diameter changes measurement. The sensor structure is a combination of a cylindrical piece developed using a 3D printer and a Mach–Zehnder interferometer. The pieces were developed to assist in monitoring the diameter variation. It is formed by splicing an uncoated short section of MMF (Multimode Fiber) between two standard SMFs (Singlemode Fibers) called SMF-MMF-SMF (SMS), where the MMF length is 15 mm. The work is divided into two main parts. Firstly, the sensor was fixed at two points on the first developed piece, and the diameter reduction caused dips or peaks shift of the transmittance spectrum due to curvature and strain influence. The fixation point (FP) distances used are: 5 mm, 10 mm, and 15 mm. Finally, the setup with the best sensitivity was chosen, from first results, to develop another test with an optimization. This optimization is performed in the printed piece where two supports are created so that only the strain influences the sensor. The results showed good sensitivity, reasonable dynamic range, and easy setup reproduction. Therefore, the sensor could be used for diameter variation measurement for proposed applications.

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“…Several traditional MZI sensors based on cascaded, spatial multipath, and linear fiber structures have been reported [7][8][9][10], enhancing the characteristics of sensitivity, loss, stability, and reusability. Besides, a few MZI inline-fiber sensors have been reported by various methods of fabrication, such as up and down tapering [11,12] mode-field or core mismatch [13] and femtosecond laser micromachining [14,15]. Particularly, the equipment of a tapering machine and femtosecond laser is relatively expensive, and its low throughput still limits it to several applications.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Measurement of Temperature and Strain Using Multi-Core Fiber Within-Line Cascaded Symmetrical Ellipsoidal Fiber Balls-Based Mach-Zehnder Interferometer Structure

Mumtaz¹,

Lin²,

Dai³

et al. 2021

PIER C

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Simultaneous measurement of temperature and strain using multi-core fiber (MCF) with an in-line cascaded symmetrical ellipsoidal fiber balls structure of Mach-Zehnder interferometer (MZI) is presented. The sensor is fabricated by using an ordinary fusion apparatus. The thermo-coupling effect is realized through Germanium (Ge)-doped central and hexagonal distributed outer cores of MCF. A highquality transmission spectrum is obtained with a fringe visibility of 12-15 dB and higher extinction ratio. The sensor exhibits superior mechanical strength compared with the fragile structures, such as tapered, etched, misaligned and offset fibers. The temperature sensitivity of 137.6 pm/ • C and 68.1 pm/ • C in the range of 20-90 • C, and the strain sensitivity of −0.42 pm/με and −1.19 pm/με in the range of 0-801 με are obtained, when probe "L" is 40 mm and 20 mm, respectively. Simultaneous measurement of temperature and strain can be achieved by solving the coefficient matrix and tracing the wavelength shifts in the interference spectrum. Besides, the sensor has many advantages, such as high sensitivity, easy fabrication, simple structure, being stable and inexpensive, which may find potential applications in the field of optical sensing.

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Optical fiber temperature sensor based on a Mach-Zehnder interferometer with single-mode-thin-core-single-mode fiber structure

Cited by 26 publications

References 30 publications

Applications of Digital Holographic Interferometry in Heat Transfer Measurements from Heated Industrial Objects

Applications of Digital Holographic Interferometry in Heat Transfer Measurements from Heated Industrial Objects

A Simple Optical Sensor Based on Multimodal Interference Superimposed on Additive Manufacturing for Diameter Measurement

Simultaneous Measurement of Temperature and Strain Using Multi-Core Fiber Within-Line Cascaded Symmetrical Ellipsoidal Fiber Balls-Based Mach-Zehnder Interferometer Structure

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