Temperature-insensitive fiber twist sensor based on elliptical-core few-mode fiber

Yu, Dejie; Mo, Qi; Hong, Zhikun; Fu, Songnian; Sima, Chaotan; Tang, Ming; Liu, Deming

doi:10.1364/ol.41.004617

Cited by 24 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A wide range of all-fiber in-line twist sensors based on different types of fibers has been reported, which includes multimode fibers (MMFs) [12], polarization-maintaining fibers (PMFs) [10], photonic crystal fibers (PCFs) [13,14], special fibers [15,16], and fiber gratings [17,18]. Each of these sensor types possesses its own set of advantages and disadvantages, making them suitable for different applications.…”

Section: Introductionmentioning

confidence: 99%

All-Fiber In-Line Twist Sensor Based on a Capillary Optical Fiber

Tang,

Ruan,

Zuo

et al. 2023

Photonics

View full text Add to dashboard Cite

Twist sensors have emerged as crucial tools in the field of structural health monitoring, playing a significant role in monitoring and ensuring the integrity of critical infrastructure such as dams, tunnels, bridges, pipelines, and buildings. We proposed and demonstrated an all-fiber in-line twist sensor which was based on a capillary fiber spliced between two single-mode fibers with a transverse offset. Through a series of experiments, the sensor’s performance was evaluated and quantified. The results showcased remarkable twist sensitivities in both clockwise and anticlockwise directions. With a transverse offset of 8.0 µm, the sensor exhibited twist sensitivities of −0.077 dB/° and 0.043 dB/° in the clockwise and anticlockwise directions, respectively, in the measured twist range from 0 to 90°. Furthermore, it was also demonstrated that the sensor was temperature insensitive at the chosen wavelength of 1520 nm, which can assist in increasing measurement accuracy. Our sensor’s low cost, simplicity of manufacture, and improved performance will push forward its adoption in future engineering applications such as structural health monitoring in dams, tunnels, and buildings.

show abstract

Section: Introductionmentioning

confidence: 99%

All-Fiber In-Line Twist Sensor Based on a Capillary Optical Fiber

Tang,

Ruan,

Zuo

et al. 2023

Photonics

View full text Add to dashboard Cite

show abstract

“…The EFMF has the advantages of low loss, low crosstalk, and low bending loss, which are obviously better than those in the studies mentioned in Refs. [25][26][27][28][29]. Obviously, our proposed EFMF not only has important applications of MIMO-FREE in the optical communication field, but also can be widely used in the pulse transmission systems [30,31], high-speed transmission systems [32,33], sensor systems [34], and fiber laser systems [35,36].…”

Section: Introductionmentioning

confidence: 99%

An Elliptical-Core Few-Mode Fiber with Low Loss and Low Crosstalk for the MIMO-FREE Applications

Gao

et al. 2022

Front. Phys.

View full text Add to dashboard Cite

In this invited paper, a novel elliptical-core few-mode fiber (EFMF) with low loss and low Crosstalk is proposed for multiple input multiple output free (MIMO-FREE) applications. The EFMF, which adopts pure silica elliptical core with a step refractive index profile and trench refractive index, can be used in MIMO-FREE operation. The result using a full-vector finite element method shows that the proposed EFMF breaks the mode degeneracy and achieves modes maintaining function. The EFMF performs five non-degenerate modes operations with the modes LP01, LP11a, LP11b, LP21b, and LP21a for the MIMO-FREE applications. The mode crosstalk of the EFMF is effectively reduced using the optimized ellipticity and the large effective refractive index difference between the modes. If the data rate or capacity is conventionally set to a multiple of 2, the transmission system can be upgraded using the EFMF with four modes operations where the effective refractive index difference between any two modes is more than 2 × 10−3. A pure silica core is employed to effectively reduce intrinsic loss. The low bending loss is realized by using the trench refractive index at the cladding. The EFMF can be applied to the good transmission of mode division multiplexing in MIMO-FREE applications while eliminating the difficulty and complexity of the MIMO digital signal processing.

show abstract

“…Finally, there are also numerous sensors based on special fibers such as, elliptical core few mode fiber [11], two mode fiber (TMF) [25] and square coreless fibers (SCF) [6] have been designed and fabricated for twist sensing. Nevertheless, some of them cannot tell the direction of the applied twist.…”

Section: Introductionmentioning

confidence: 99%

An Optical Fiber Twist Sensor With Temperature Compensation Mechanism Based on T-SMS Structure

Lü

et al. 2020

IEEE Photonics J.

Self Cite

View full text Add to dashboard Cite

A new optical fiber twist sensor with temperature compensation mechanism is designed and experimentally demonstrated. The main structure of this twist sensor is a torsion perturbation point cascaded with single mode-multimode-single mode (SMS) fiber structure. The experimental results show that the twist sensor has ability to distinguish the twist direction with sensitivities of 9.5 pm/°and 34.7 pm/°at the chosen dips in the range from −100°(CCW) to 140°(CW). Furthermore, the temperature response characteristic of the sensor is also researched through experiment. Temperature sensitivities of 71.8 pm/°C and 65.2 pm/°C can be obtained at the same dips in the range from 20°C to 75°C. In addition, the temperature's influence can be compensated with post-measurement calculation through the cross-matrix. The theoretical resolutions of twist and temperature simultaneous measurement are ±0.084°and ±0.32°C, respectively.

show abstract

Temperature-insensitive fiber twist sensor based on elliptical-core few-mode fiber

Cited by 24 publications

References 13 publications

All-Fiber In-Line Twist Sensor Based on a Capillary Optical Fiber

All-Fiber In-Line Twist Sensor Based on a Capillary Optical Fiber

An Elliptical-Core Few-Mode Fiber with Low Loss and Low Crosstalk for the MIMO-FREE Applications

An Optical Fiber Twist Sensor With Temperature Compensation Mechanism Based on T-SMS Structure

Contact Info

Product

Resources

About