Temperature-independent curvature sensor based on in-fiber Mach-Zehnder interferometer using hollow-core fiber

Marrujo-García, Sigifredo; Hernández-Romano, Iván; Torres-Cisneros, M.; May-Arrioja, Daniel A.; Minkovich, Vladimir P.; Monzón-Hernández, David

doi:10.1109/jlt.2020.2985041

Cited by 53 publications

(25 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For a more detailed explanation of the setup, see Ref. [41]. A metal screw with a pointed head was mounted in a translation stage and was used to push and curve the steel sheet at curvatures from 0 to 2.68 m −1 .…”

Section: Methodsmentioning

confidence: 99%

“…For instance, bending will modify the shape of the guided mode that effectively moves toward the outer region of the OF, which will increase the losses of the guided mode [38][39][40]. Although such an effect is detrimental for telecom applications, some curvature sensors take advantage of this effect, and different curvature FOS have been demonstrated as we mentioned before [28,[41][42][43]. In the case of ARROW devices based on CHCF, bending losses also occur, and light that travels in the hollow-core and the ring-cladding leaks out as radiative light, increasing the propagating losses.…”

Section: Operation Principlementioning

confidence: 98%

See 1 more Smart Citation

Sensitivity Enhancement of Curvature Fiber Sensor Based on Polymer-Coated Capillary Hollow-Core Fiber

Herrera-Piad

Hernández-Romano

May-Arrioja

et al. 2020

Sensors

Self Cite

View full text Add to dashboard Cite

In this paper, we propose and experimentally demonstrate a simple technique to enhance the curvature sensitivity of a bending fiber optic sensor based on anti-resonant reflecting optical waveguide (ARROW) guidance. The sensing structure is assembled by splicing a segment of capillary hollow-core fiber (CHCF) between two single-mode fibers (SMF), and the device is set on a steel sheet for measuring different curvatures. Without any surface treatment, the ARROW sensor exhibits a curvature sensitivity of 1.6 dB/m−1 in a curvature range from 0 to 2.14 m−1. By carefully coating half of the CHCF length with polydimethylsiloxane (PDMS), the curvature sensitivity of the ARROW sensor is enhanced to −5.62 dB/m−1, as well as an increment in the curvature range (from 0 to 2.68 m−1). Moreover, the covered device exhibits a low-temperature sensitivity (0.038 dB/°C), meaning that temperature fluctuations do not compromise the bending fiber optic sensor operation. The ARROW sensor fabricated with this technique has high sensitivity and a wide range for curvature measurements, with the advantage that the technique is cost-effective and easy to implement. All these features make this technique appealing for real sensing applications, such as structural health monitoring.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Operation Principlementioning

confidence: 98%

Sensitivity Enhancement of Curvature Fiber Sensor Based on Polymer-Coated Capillary Hollow-Core Fiber

Herrera-Piad

Hernández-Romano

May-Arrioja

et al. 2020

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…Lots of traditional optical fiber sensor schemes have been proposed over the last twenty years. Temperature sensors are designed and fabricated based upon the principles of fiber Bragg grating (FBG) [1][2][3], Mach-Zehnder interferometer (MZI) [4][5][6], and Fabry-Perot interferometers (FPI) [7][8][9]. Recently, there is a growing interest in all-fiber laser sensors, since it has the advantages of high sensitivity, good stability, low insertion loss and high signal-to-noise ratio.…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensor Based on Fiber Ring Laser With Cascaded Fiber Optic Sagnac Interferometers

et al. 2021

View full text Add to dashboard Cite

A new temperature fiber ring laser (FRL) sensor based on a cascaded Sagnac loops fiber structure is proposed and experimentally demonstrated. The optical FRL sensor consists of cascaded Sagnac loops by inserting two polarization-maintaining optical fibers (PMF) with slightly different lengths. PMF with length of 56 cm and 75 cm are used in Sagnac loops as a filter and sensing unit in laser cavity. The working principle of the sensor is based on the phase shift (θ) caused by birefringence between two principal polarization modes and enhance the sensitivity by constructing a Vernier-scale. In an appropriate temperature range (25℃-31℃), the detection sensitivity of FRL sensor based on a cascaded Sagnac structure is significantly higher than other FRL sensors. Thanks to the laser sensing system, the sensitivity can be modulated by changing the free spectral range (FSR). The experimental results show that the temperature sensitivity of the cascade Sagnac structure sensor is-4.031 nm / ° C, which is five times higher than that of FRL sensor base on the single Sagnac structure.

show abstract

“…Optical fiber sensor has gained extensive attention in recent years due to its various advantages, such as low cost, ease of fabrication, compactness, good resistance to electromagnetic interference and chemical corrosion [ 1 ]. Diverse applications of fiber sensor have been researched and developed, for instance, temperature sensing [ 2 , 3 , 4 ], humidity sensing [ 5 , 6 ], refractive index (RI) sensing [ 7 , 8 , 9 ], strain sensing [ 10 , 11 ], curvature sensing [ 12 , 13 ], pH sensing [ 14 , 15 ], gas sensing [ 16 , 17 , 18 ] and so on. Temperature and RI are seemed as the important parameters because of their importance on environment monitoring, liquid quality inspection and food safety detection.…”

Section: Introductionmentioning

confidence: 99%

Dual Demodulation of Temperature and Refractive Index Using Ring Core Fiber Based Mach-Zehnder Interferometer

Yuan

Chen

2021

Micromachines

View full text Add to dashboard Cite

We report the ring core fiber spliced with single mode fiber and no core fiber which is used for temperature and refractive index (RI) sensing. The Mach-Zehnder interferometer (MZI) is formed with this kind of sandwich fiber structure and the maximum extinction ratio of the interference spectra reaches 27 dB with the free spectra range of 12 nm. The MZI fiber sensor is applied for temperature sensing with the sensitivity of 69 pm/°C and 0.051 dB/°C. The RI sensitivity reaches 182.07 dB/RIU and −31.44 nm/RIU with the RI ranging from 1.33 to 1.38. The RI value can be directly demodulated with the interference dip intensity which shows insensitivity to temperature. The demodulation of temperature can be achieved by using the linear equations between dip wavelength shift with the variation of temperature and RI.

show abstract

Temperature-independent curvature sensor based on in-fiber Mach-Zehnder interferometer using hollow-core fiber

Cited by 53 publications

References 28 publications

Sensitivity Enhancement of Curvature Fiber Sensor Based on Polymer-Coated Capillary Hollow-Core Fiber

Sensitivity Enhancement of Curvature Fiber Sensor Based on Polymer-Coated Capillary Hollow-Core Fiber

Temperature Sensor Based on Fiber Ring Laser With Cascaded Fiber Optic Sagnac Interferometers

Dual Demodulation of Temperature and Refractive Index Using Ring Core Fiber Based Mach-Zehnder Interferometer

Contact Info

Product

Resources

About