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

Reyes-Vera, Erick; Cordeiro, Cristiano M. B.; Torres, Pedro

doi:10.1364/ao.56.000156

Cited by 115 publications

(32 citation statements)

References 36 publications

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“…For instance, highly sensitive temperature sensing was reported by PCF based Sagnac interferometers filled with metal [85], selectively filled with liquid [86,87], and partially filled with alcohol [88]. The indium-filled side hole PCF was producing a change in birefringence due to the expansion of the filler metal, resulting in a high temperature sensitivity of the sensor of À9.0 nm/ o C [85]. A PBG PCF was selectively filled by high index liquid, leading to temperature dependence in the bandgap properties, as well as the Sagnac interference properties.…”

Section: Selected Topics On Optical Fiber Technologies and Applicatiomentioning

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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Section: Selected Topics On Optical Fiber Technologies and Applicatiomentioning

confidence: 99%

Photonic Crystal Fiber–Based Interferometric Sensors

Hu¹,

Wong²,

Shum³

2018

Selected Topics on Optical Fiber Technologies and Applications

View full text Add to dashboard Cite

show abstract

“…8 In that contribution, the measurement range was 20 C with sensitivity of 1.46 nm/1 C. Besides, some other Sagnac loop based setups relied on usage of photonic crystal fibers (PCFs). One of them demonstrated by E. Reyes-Vera et al 9 contained metal-filled sidehole PCF in Sagnac loop. In this work, the sensitivity was improved and equaled to −9.0 nm/1 C. Another setup, reported by Cui et al, 10 was created using 11.7-cm-long PM-PCF with two water filled holes, resulting in the sensor sensitivity of 2.58 nm/ C. Other approach of Sagnac loop temperature sensor was presented by Shi et al 11 In this article, the Sagnac loop was exploited in the conjunction with erbium doped fiber ring laser.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, some other Sagnac loop based setups relied on usage of photonic crystal fibers (PCFs). One of them demonstrated by E. Reyes‐Vera et al contained metal‐filled side‐hole PCF in Sagnac loop. In this work, the sensitivity was improved and equaled to −9.0 nm/1°C.…”

Section: Introductionmentioning

confidence: 99%

Intensity‐modulated Sagnac loop temperature sensor setup

Mądry

Bereś-Pawlik

2019

Micro & Optical Tech Letters

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In this article, the novel low‐cost and simple intensity‐modulated Sagnac loop based temperature sensor setup is presented. The sensor head consists of a short length of polarization‐maintaining fiber (PMF), which is spliced to a single‐mode fiber optic coupler. Due to the short section of PMF, the spectrum has wide separation between adjacent interferometer dips. This idea ensures that transmission of a broadband light source has different losses after propagation through Sagnac loop whether temperature changes and causes shift of interferometer dips. Therefore, tracking of wavelength shift of interferometer dip is not required in this setup as it relies on direct optical power measurement. Instead of using spectral analysis instruments, we present the novel intensity‐modulated optical fiber temperature sensor based on Sagnac loop created of short section of PMF. This particular sensor was experimentally investigated for a temperature range of 25‐50.5°C and exhibited the sensitivity of 0.066 mW/1°C with resolution of 0.34°C. The setup could be easily applied in order to create fiber optic sensor network for temperature monitoring.

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“…The size and shape of the holes, their distribution, the insertion of materials into the holes, and the different interferometric arrangements are parameters that allow fabricating of MSF with different structures and geometries. Therefore, this leads to different conditions that optimize the propagation of optical waves along the MSF and enhances its sensing applications [5,[8][9][10][11][12][13][14]. In general, there are two configurations that have been mainly used to design MSF sensors: grating and interferometric-based sensors.…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensor Based on an Asymmetric Two-Hole Fiber Using a Sagnac Interferometer

et al. 2018

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We report in this paper a temperature sensor based on an asymmetric two-hole fiber (ATHF) using a Sagnac interferometer (SI) configuration. The operation principle is based on the birefringence change induced by the temperature difference between the air holes and the silica fiber. As a result, the transmitted spectrum of the SI exhibits a sinusoidal profile which is shifted when the temperature is increased. A linear wavelength shift as a function of temperature is observed, and a sensitivity of 2.22 nm/°C was achieved using a 2 m long asymmetric THF, which is in the same order as those previously reported using similar microstructured fibers. The advantage of this system is a linear response, the use of a microstructured fiber with a simpler transverse geometry, and the use of bigger holes which can facilitate the insertion of several materials and improve the sensitivity of the sensor for different applications.

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

Cited by 115 publications

References 36 publications

Photonic Crystal Fiber–Based Interferometric Sensors

Photonic Crystal Fiber–Based Interferometric Sensors

Intensity‐modulated Sagnac loop temperature sensor setup

Temperature Sensor Based on an Asymmetric Two-Hole Fiber Using a Sagnac Interferometer

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