Sensitivity Enhanced Refractive Index Sensor With In-Line Fiber Mach-Zehnder Interferometer Based on Double-Peanut and Er-Doped Fiber Taper Structure

Zhao, Fang; Xiao, Dongrui; Lin, Wei‐Hao; Chen, Yun; Wang, Guoqing; Hu, Jie; Liu, Shuaiqi; Yu, Feihong; Xu, Weijie; Yang, Xiaoli; Liu, Yibin; Shao, Liyang; Shum, Perry Ping; Wang, Weizhi

doi:10.1109/jlt.2021.3118285

Cited by 21 publications

(6 citation statements)

References 33 publications

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“…This structure has lots of advantages, including high sensitivity, ease of fabrication, high mechanical strength, compact structure, etc. Zhao et al [ 130 ] have designed a sensor based on erbium-doped fiber with double rosette and tapered structure for RI detection. It is formed by using the welding machine to manually discharge repeatedly, making welding balls at both ends of the optical fiber, and then fusing the two balls.…”

Section: Novel Plasmonic Fiber Structurementioning

confidence: 99%

Novel Optical Fiber-Based Structures for Plasmonics Sensors

et al. 2022

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Optical fiber sensors based on surface plasma technology have many unique advantages in specific applications such as extreme environmental monitoring, physical parameter determination, and biomedical indicators testing. In recent decades, various kinds of fiber probes with special structures were developed according to special processing such as tapering, splicing, etching, fiber balls, grating etc. In this paper, the fabrication technology, characteristics, development status and application scenarios of different special optical fiber structures are briefly reviewed, including common processing equipment. Furthermore, many special novel optical fiber structures reported in recent years are summarized, which have been used in various kinds of plasmonic sensing work. Then, the fiber-plasmonic sensors for practical applications are also introduced and examined in detail. The main aim of this review is to provide guidance and inspiration for researchers to design and fabricate special optical fiber structures, thus facilitating their further research.

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Section: Novel Plasmonic Fiber Structurementioning

confidence: 99%

Novel Optical Fiber-Based Structures for Plasmonics Sensors

et al. 2022

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“…The presence of a phase difference recoupled to the inner SMF core when different modes of light propagate to the melting junction of the NCF2 and the SMF causes interference in different modes of light. The intensity of the interference light can be expressed as [10]:…”

Section: B Sensing Principlementioning

confidence: 99%

Application of microstructured fiber sensor in the field of temperature detection

Yang

Shen

Feng

et al. 2022

ESS

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A fiber temperature sensor based on no core fiber-few mode fiber-no core fiber (NCF-FMF-NCF) is proposed. It consists of two segments of NCF and a segment of FMF, with the NCF fused at both ends of the FMF. Meanwhile, the lengths of the NCF and FMF were optimized by simulation simulations and experimental validation. The results show that the sensor has a high sensitivity to the external refractive index (RI) changes, and enables a wide range of ambient temperature measurement. A sensitivity of 0.09445nm/? was obtained in a temperature range of 25-70?. The sensor has the advantages of high stability, good linear fit and simple structure.

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“…Li et al [10] has described the use of a double-taper MZI biosensor to detect Staphylococcus aureus with the RI sensitivity up to 2731.1 nm/RIU. Zhao et al [13] proposed a double peanut-shaped structured MZI fiber sensor based on Er-doped fiber with the RI sensitivity of 441.56 nm/RIU is achieved. However, many existed tapered fiber optic RI sensors based on MZI still have some limitations such as complicated fabrication techniques and inadequate sensitivity that need further improvement.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity enhanced interferometric optical sensor of taper-in-taper structure for heavy metal ions detection

Zhang

Lei²,

Liu³

et al. 2023

International Conference on Optoelectronic Materials and Devices (ICOMD 2022)

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Heavy metal pollution in water resource is a serious issue that related to the ecosystem and the health status of human beings. Although there existed many detection methods, it is still difficult to create a device with ultrahigh sensitivity to detect heavy metal ions in situations with low concentrations. This paper proposed a taper-in-taper (T-I-T) interferometric fiber sensor of enhanced sensitivity and decorated with polyelectrolyte layers for Cu2+ detection. The T-I-T structure was created on the single-mode fiber via twice arc discharges. The maximum refractive index (RI) sensitivity of T-I-T fiber sensor is as high as 4170 nm/RIU, meanwhile, when apply in heavy metal ions detection, the sensitivity can reach 10.4 nm/ mM when the Cu2+ concentration is 0.1-1 mM. Furthermore, there is a low temperature cross sensitivity of only 0.12 nm/°C. The proposed T-I-T fiber sensor has the potential to be applied in water resource environmental monitoring due to its benefits of high sensitivity, compact structure, and excellent stability.

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Sensitivity Enhanced Refractive Index Sensor With In-Line Fiber Mach-Zehnder Interferometer Based on Double-Peanut and Er-Doped Fiber Taper Structure

Cited by 21 publications

References 33 publications

Novel Optical Fiber-Based Structures for Plasmonics Sensors

Novel Optical Fiber-Based Structures for Plasmonics Sensors

Application of microstructured fiber sensor in the field of temperature detection

Sensitivity enhanced interferometric optical sensor of taper-in-taper structure for heavy metal ions detection

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