Bend Sensor Based on Mach-Zehnder Interferometer Using Single-Mode Fiber With Helical Structure

He, Xuelan; Zhou, Jian; Ma, Chunguang; Li, Wenchao; Yang, Jing; Wang, Xianbin; Guan, Chunying; Zhao, Yuxin; Yuan, Libo

doi:10.1109/lpt.2021.3131673

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…In Ref. [18], these helicoidal long-period fiber gratings are fabricated by twisting SMFs during CO 2 laser irradiation. A compact fiber bending sensor has been presented by superimposing a uniform FBG into a tilted FBG [16] .…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…Compared to the fabrication methods in Refs. [13,15,18], the literature [14,19,20] and our sensor fabrication require only one commercial SMF fusion splice. The highest sensitivity of −38.4 dB=m −1 was reported by Zhang et al [14] .…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…Zhang et al fabricated a bending sensor based on fiber-optic spindle arrays [17] . Bend sensing for intensity interrogation was achieved using an SMF spiral structure by He et al [18] . Marrujo-Garcia et al reported a temperature-independent curvature sensor based on in-fiber MZI using hollow-core fiber [19] .…”

Section: Introductionmentioning

confidence: 99%

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High sensitivity all-fiber bend sensor based on modal interferences in a ring core fiber

Zhang

et al. 2023

中国光学快报

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We proposed and experimentally demonstrated an all-fiber sensor for measuring bend with high sensitivity based on a ring core fiber (RCF) modal interferometer. The sensor was fabricated by splicing a segment of RCF between two pieces of multimode fiber (MMF) and single-mode fiber (SMF) at the ends of the MMF as lead-in and lead-out. Due to the first segment of the MMF, the transmitted light is coupled into the ring core, silica center, and cladding of the RCF, exciting multiple modes in the RCF. By the modal interferences in the structure, bending sensing can be realized by interrogating the intensity of the interference dip. Experimental results show a high bending sensitivity of −25.63 dB=m −1 in the range of 1.0954 m −1 to 1.4696 m −1 . In addition, the advantages of the bend sensor, such as small size, low temperature sensitivity, and simple fabrication process, can be used for curvature measurement in building health monitoring.

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Section: Experiments and Discussionmentioning

confidence: 99%

Section: Experiments and Discussionmentioning

confidence: 99%

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High sensitivity all-fiber bend sensor based on modal interferences in a ring core fiber

Zhang

et al. 2023

中国光学快报

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“…Quartz optical fiber sensor has been studied for a long time. In 1970, the Corning Company successfully developed low-loss optical fiber, and remarkable achievements have been made in the structural design [ 65 , 66 , 67 ], experimental preparation [ 68 , 69 , 70 , 71 , 72 ], and application [ 73 , 74 , 75 , 76 , 77 ] of the sensor head. However, in order to solve the cross-sensitivity problem of quartz optic fiber sensors, structural modification is required, which leads to the sensor head being brittle and easy to break.…”

Section: The Structure Of Temperature Self-compensating Fiber Spr Sen...mentioning

confidence: 99%

Research Advances on Fiber-Optic SPR Sensors with Temperature Self-Compensation

Zhao

Wang

Han

et al. 2023

Sensors

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The fiber-optic surface plasmon resonance sensor has very promising applications in environmental monitoring, biochemical sensing, and medical diagnosis, due to the superiority of high sensitivity and novel label-free microstructure. However, the influence of ambient temperature is inevitable in practical sensing applications, and even the higher the sensitivity, the greater the influence. Therefore, how to eliminate temperature interference in the sensing process has become one of the hot issues of this research field in recent years, and some accomplishments have been achieved. This paper mainly reviews the research results on temperature self-compensating fiber-optic surface plasmon sensors. Firstly, it introduces the mechanism of a temperature self-compensating fiber-optic surface plasmon resonance sensor. Then, the latest development of temperature self-compensated sensor is reviewed from the perspective of various fiber-optic sensing structures. Finally, this paper discusses the most recent applications and development prospects of temperature self-compensated fiber-optic surface plasmon resonance sensors.

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High sensitivity I-beam shaped polarization related vector curvature sensor with optical intensity modulation

Han,

Hasi,

Zhu

et al. 2024

Infrared Physics & Technology

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Bend Sensor Based on Mach-Zehnder Interferometer Using Single-Mode Fiber With Helical Structure

Cited by 7 publications

References 22 publications

High sensitivity all-fiber bend sensor based on modal interferences in a ring core fiber

High sensitivity all-fiber bend sensor based on modal interferences in a ring core fiber

Research Advances on Fiber-Optic SPR Sensors with Temperature Self-Compensation

High sensitivity I-beam shaped polarization related vector curvature sensor with optical intensity modulation

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