Wide Range FBG Displacement Sensor Based on Twin-Core Fiber Filter

Zou, Yi; Dong, Xiaopeng; Lin, Ganbin; Adhami, Reza R.

doi:10.1109/jlt.2011.2181334

Cited by 49 publications

(18 citation statements)

References 22 publications

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“…The temperature can be measured from the fringe spacing itself because the fringe spacing as well as the wavelength shift (2) and (6). As an example, Fig.…”

Section: Sensor Fabrication and Measurement Principlementioning

confidence: 99%

“…Currently, fiber-optic sensors are implemented in the measurement and monitoring of various physical variables such as pressure, displacement, temperature, refractive index, strain, etc. [1][2][3][4][5][6][7], with temperature sensors being the most studied and applied in recent years in the field of monitoring processes. Fiber gratings-fiber Bragg gratings (FBGs) [8,9] and long-period fiber gratings (LPGs) [10]-conventional high-birefringence (HiBi) optical fibers [11][12][13][14], waist-enlarged fusion bitaper [15], liquid-sealed tapered fibers [16], filled side-hole fibers [17][18][19][20], and filled photonic crystal fibers (PCFs) [21][22][23][24] have especially attracted great interest in temperature-sensing applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Highly sensitive temperature sensor using a Sagnac loop interferometer based on a side-hole photonic crystal fiber filled with metal

Reyes-Vera¹,

Cordeiro²,

Torres³

2017

Appl. Opt.

116

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A highly sensitive temperature sensor based on an all-fiber Sagnac loop interferometer combined with metal-filled side-hole photonic crystal fiber (PCF) is proposed and demonstrated. PCFs containing two side holes filled with metal offer a structure that can be modified to create a change in the birefringence of the fiber by the expansion of the filler metal. Bismuth and indium were used to examine the effect of filler metal on the temperature sensitivity of the fiber-optic temperature sensor. It was found from measurements that a very high temperature sensitivity of -9.0 nm/°C could be achieved with the indium-filled side-hole PCF. The experimental results are compared to numerical simulations with good agreement. It is shown that the high temperature sensitivity of the sensor is attributed to the fiber microstructure, which has a significant influence on the modulation of the birefringence caused by the expansion of the metal-filled holes.

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“…The temperature can be measured from the fringe spacing itself because the fringe spacing as well as the wavelength shift (2) and (6). As an example, Fig.…”

Section: Sensor Fabrication and Measurement Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly sensitive temperature sensor using a Sagnac loop interferometer based on a side-hole photonic crystal fiber filled with metal

Reyes-Vera¹,

Cordeiro²,

Torres³

2017

Appl. Opt.

116

View full text Add to dashboard Cite

show abstract

“…As TCF-based filter is applied to axial strain, the refractive index of both core and cladding will decrease according to the photo-elastics [29]:…”

Section: Strain Effectmentioning

confidence: 99%

Tunable Single-, Dual- and Multi-wavelength Fibre Lasers by Using Twin Core Fibre-based Filters

Yin¹,

Wang²,

Lou³

et al. 2016

Fiber Laser

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Tunable fibre lasers draw intensive attention because their emission wavelength can be systematically tuned within a certain spectral range, which allows using a single laser source instead of several sources. This is convenient and cost-effective for many applications in a range of fields, such as telecom, material processing, microscopy, medicine and imaging and so on. The laser wavelength can be tuned in a certain range of wavelength by inserting wavelength-selective elements into the laser's optical cavity. This chapter describes the twin core fibre (TCF)-based filters, which work as the wavelength-selective element. They are introduced into the ring cavity to implement tunable single-, dual-and multi-wavelength fibre lasers. First, we deduced the coupled-mode theory of TCF-based filter. Second, we experimentally and numerically characterized the optical properties of TCF-based filters including free spectral range, polarization dependence, strain effect and bending effect. Finally, we investigated three tunable fibre lasers which operate at single-, dual-and multi-wavelengths, respectively. The operation mechanism of the fibre lasers mainly involved the elastic-optic effect, polarization hole burning effect and non-linear optical loop mirror. We emphasized the tuning mechanism and the tuning characteristics of the tunable fibre lasers.

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“…The output powers were measured by employing two photodiodes [46]. Also in displacement measurements, the FBG sensor output can be obtained by using an edge filter to interrogate the resonant wavelength [47] or a cantilever to transfer/convert the displacement into the chirp profile of the FBG [48].…”

Section: Fiber Bragg Grating Sensorsmentioning

confidence: 99%

Advances on Optical Fiber Sensors

Mescia

Prudenzano

2013

Fibers

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In this review paper some recent advances on optical fiber sensors are reported. In particular, fiber Bragg grating (FBG), long period gratings (LPGs), evanescent field and hollow core optical fiber sensors are mentioned. Examples of recent optical fiber sensors for the measurement of strain, temperature, displacement, air flow, pressure, liquid-level, magnetic field, and the determination of methadone, hydrocarbons, ethanol, and sucrose are briefly described.

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Wide Range FBG Displacement Sensor Based on Twin-Core Fiber Filter

Cited by 49 publications

References 22 publications

Highly sensitive temperature sensor using a Sagnac loop interferometer based on a side-hole photonic crystal fiber filled with metal

Highly sensitive temperature sensor using a Sagnac loop interferometer based on a side-hole photonic crystal fiber filled with metal

Tunable Single-, Dual- and Multi-wavelength Fibre Lasers by Using Twin Core Fibre-based Filters

Advances on Optical Fiber Sensors

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