Asymmetrical Twin-Core Fiber Based Michelson Interferometer for Refractive Index Sensing

Zhou, Ai; Li, Guangping; Zhang, Yanhui; Wang, Yuzhuo; Guan, Chunying; Yang, Jun; Yuan, Libo

doi:10.1109/jlt.2011.2165528

Cited by 39 publications

(19 citation statements)

References 31 publications

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“…4. It can be seen that the measured results agree well with the theoretical results based on (4) Fig. 4 Relationship between the FSR and the length of HST.…”

Section: Configuration and Operating Principlesupporting

confidence: 80%

“…Miniature fiber-optic interferometers have attracted broad attention for their advantages of simple structure, compact size, immunity to electromagnetic interference, high sensitivity and accuracy, and so on. The commonly used configurations for fiber-optic interferometers include Mach-Zehnder interferometers [1][2], Michelson interferometers [3][4], and Fabry-Perot interferometers [5][6][7]. Compared with the fiber-optic Fabry-Perot interferometers, miniature fiber-optic Fabry-Perot interferometers (MOFPIs) have also been widely applied in the measurement of temperature, strain, pressure, acceleration, displacement, and ultrasound.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

2016

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A miniature fiber-optic Fabry-Perot interferometer (MOFPI) fabricated by splicing a hollow silica tube (HST) with inner diameter of 4 m to the end of a single-mode fiber is investigated and experimentally demonstrated. The theoretical relationship between the free spectrum range and the length of HST is verified by fabricating several MOFPIs with different lengths. We characterize the MOFPIs for temperature, liquid refractive index, and strain. Experimental results show that the sensitivities of the temperature, liquid refractive index, and strain are 16.42 pm/℃,-118.56 dB/RIU, and 1.21 pm/, respectively.

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“…4. It can be seen that the measured results agree well with the theoretical results based on (4) Fig. 4 Relationship between the FSR and the length of HST.…”

Section: Configuration and Operating Principlesupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

2016

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“…PM-PCFs have two orthogonally polarized core modes which act as two different optical paths for interference [52]. The two different optical paths can also be formed by two core modes in two-core PCFs [53,54], or two core fibers [55]. In addition, the core mode and cladding modes that are excited at the splicing region between a SMF and a PCF due to mode mismatch [56] or a collapsed region in PCFs [57][58][59][60][61][62].…”

Section: Michelson Interferometermentioning

confidence: 99%

Photonic Crystal Fiber–Based Interferometric Sensors

Hu¹,

Wong²,

Shum³

2018

Selected Topics on Optical Fiber Technologies and Applications

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Photonic crystal fibers (PCFs), also known as microstructured optical fibers, are a highlighted invention of optical fiber technology which have unveiled a new domain of manipulating light in engineered fiber waveguides with unparalleled flexibility and controllability. Since the report of the first fabricated PCF in 1996, research in PCFs has resulted in numerous explorations, development and commercialization of PCF-based technologies and applications. PCFs contain axially aligned air channels which provide a large degree of freedom in design to achieve a variety of peculiar properties; numerous PCF-based sensors have been proposed, developed and demonstrated for a broad range of sensing applications. In this chapter, we will review the field of research on design, development and experimental achievement of PCF-based interferometric sensors for physical and biomedical sensing applications.

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“…Among the existing RI sensor technologies, optical fibre based RI sensors have attracted much research attention due to their inherent advantages, such as compact structure, capability of remote monitoring, and immunity to external electromagnetic interference. To date, various optical fibre RI sensors have been successfully proposed, such as based on long-period gratings (LPGs) [1,2], surface plasmon resonance (SPR) [3][4][5][6], and different types of fibre optic interferometers, including Mach-Zehnder interferometers (MZIs) [7,8], Fabry-Perot interferometers (FPIs) [9,10], Michelson interferometers [11], and Sagnac interferometers [12]. However, the fabrication cost of these configurations is generally high.…”

Section: Introductionmentioning

confidence: 99%

Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure

et al. 2019

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A temperature-insensitive refractometer based on a refractive index (RI)modulated singlemode-multimode-singlemode (RMSMS) fibre structure is proposed and experimentally demonstrated. In this investigation, a combination of no-core fibre (NCF) and multimode fibre (MMF) regions provides an RI modulation region due to the difference in RI between the NCF and the MMF. In effect, by periodically embedding the NCF within the MMF section of a singlemode-multimode-singlemode (SMS) fibre structure, a long-period grating (LPG) can be effectively introduced in the MMF section, and the excited cladding modes are therefore able to sense surrounding RI variation. The modulation parameters are determined from the numerical simulations, and the experimental results show the maximum RI sensitivity of the fabricated sample is as high as 206.96 nm/RIU. In addition, the proposed RMSMS fibre structure is proven to be unaffected by external temperature variation (in the wavelength domain), which is a very attractive feature in practical sensing applications.

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Asymmetrical Twin-Core Fiber Based Michelson Interferometer for Refractive Index Sensing

Cited by 39 publications

References 31 publications

Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

Photonic Crystal Fiber–Based Interferometric Sensors

Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure

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