Torsion and Temperature Sensor Based on Polished MSM Structure

Ma, Yiwei; Wang, Shengjia; Li, Xiaoyang; Yang, Yi; Wang, Senyu; Li, Yuxiang; Geng, Tao; Zhu, Hongjia; Sun, Cuiting; Zhang, Shuo; Li, Yue; Yuan, Libo

doi:10.1109/lpt.2020.3013855

Cited by 19 publications

(5 citation statements)

References 19 publications

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“…A standard fabrication process has been followed [24]. Firstly, the lead-in and the lead-out MMFs are cleaved followed by the SMF with a high-precision cleaver.…”

Section: Fabrication Of the Sensing Probementioning

confidence: 99%

“…Here, the fast Fourier transform (FFT) of the transmission spectrum of MSM has been explained to realize the number of interfering modes that participated in the interference along with the power distribution profile [23,24].…”

Section: Fast Fourier Transformmentioning

confidence: 99%

“…Although extensive scopes are there to study in detail, a small number of pieces of literature are available where MSM is employed as a sensing structure to upsurge the sensitivity. Recently, Y. Ma et al [24] propounded a novel fiber optic temperature and torsion sensor using the MSM with ultra-high intrinsic sensitivities. B. Yin et al [25] carried out a detailed investigation of MSM structure.…”

Section: Introductionmentioning

confidence: 99%

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Analyzing spectral properties and sensing performance of multi-single-multi mode fiber combination

Dey¹,

Roy²

2022

Phys. Scr.

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Here, we have executed a comprehensive investigation on the impact of the single-mode fiber (SMF) lengths on the sensing performance of multi-single-multi mode (MSM) fiber segment combination under different external parameters including temperature, strain and refractive index. An experimental setup is proposed to demonstrate the efficacy in measuring the aforementioned variables with larger sensitivity along with the resolution over the large dynamic range. In addition, different phenomenal characteristics namely fast Fourier transform, fringe visibility, and the free spectral range of the observed transmission spectrum have also been analyzed meticulously. The achieved results show that the sensitivities increase with an increase of the SMF length and are restricted to 11.5 cm length due to the superimposing and less resolution of the probing dips beyond this. The highest sensitivities of 133.25 pm/℃, -3.41 pm/ με and -52.10 nm/RIU for temperature, strain and refractive index, respectively are achieved for the 11.5 cm length of the SMF which assures potential employment of the proposed sensor in various sensing applications.

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“…A standard fabrication process has been followed [24]. Firstly, the lead-in and the lead-out MMFs are cleaved followed by the SMF with a high-precision cleaver.…”

Section: Fabrication Of the Sensing Probementioning

confidence: 99%

Section: Fast Fourier Transformmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analyzing spectral properties and sensing performance of multi-single-multi mode fiber combination

Dey¹,

Roy²

2022

Phys. Scr.

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“…Therefore, optical fiber sensors for temperature and twist have been widely studied due to their unique advantages, such as high sensitivity, strong anti-electromagnetic interference, low cost, minor size, remote sensing, and high flexibility [ 1 , 2 , 3 ]. In recent years, optical fiber sensors for temperature and twist have been widely reported based on LPFGs [ 4 , 5 , 6 , 7 , 8 ], the Mach–Zehnder interferometer (MZI) [ 9 , 10 , 11 ], and Sagnac interference (SI) [ 12 , 13 , 14 ]. For instance, Lu et al proposed a helical sensor based on LPFG to measure temperature and twist [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…The highest sensitivities of twist and temperature are 0.32 nm/(rad/m) in the range from −11.67 to 16.27 rad/m and 71.8 pm/ • C in the range from 20 to 75 • C, respectively. Ma et al proposed a sensor based on a polished multimode single-mode multimode (MSM) [11]. It has the highest twist sensitivity of 0.196 nm/(rad/m) from −14.27 to 14.27 rad/m and temperature sensitivity of 0.072 nm/ • C between 30 and 150 • C. All these structures have the following common problem: the measurement ranges of the twist are narrow, and the process of fabrication is complicated.…”

Section: Introductionmentioning

confidence: 99%

Temperature and Twist Sensor Based on the Sagnac Interferometer with Long-Period Grating in Polarization-Maintaining Fiber

Zhang,

Zheng,

Zhu

et al. 2024

Sensors

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We utilized a CO2 laser to carve long-period fiber gratings (LPFGs) on polarization-maintaining fibers (PMFs) along the fast and slow axes. Based on the spectra of LPFGs written along two different directions, we found that when LPFG was written along the fast axis, the spectrum had lower insertion loss and fewer side lobes. We investigated the temperature and twist characteristics of the embedded structure of the LPFG and Sagnac loop and ultimately obtained a temperature sensitivity of −0.295 nm/°C and a twist sensitivity of 0.87 nm/(rad/m) for the LPFG. Compared to the single LPFG, the embedded structure of the LPFG and Sagnac loop demonstrates a significant improvement in temperature and twist sensitivities. Additionally, it also possesses the capability to discern the direction of the twist. The embedded structure displays numerous advantages, including easy fabrication, low cost, good robustness, a wide range, and high sensitivity. These features make it highly suitable for applications in structural health monitoring and other related fields.

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Real‐Time Drug Delivery System Tracked Through an Optical Microfiber: Supporting Interface of Metal‐Organic‐Framework

Sun

Liu

et al. 2021

Part & Part Syst Charact

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damage to normal cell tissues and organs while treating cancer cells, so this method lacks selectivity and emerges drug resistance. Surgical treatment has become the core treatment for most cancer patients, but surgical treatment is not suitable for all tumors (malignant tumors in the late stage), and the secondary surgery aggravates the physical injury of patients. It can be seen that there are some shortcomings in the traditional treatment technology, which requires the emergence of more novel and practical technologies. The major challenges to tackle the early diagnosis and treatment of disease include discovering a means to real-time and in-situ detection of drug action and precise delivery of drugs.With the rapid development of nanomaterial technology, nano-drug delivery system provides a new opportunity to establish an effective integration of realtime diagnosis and treatment of cancer. [6] The safe and intelligent drug therapy is the key technology of tumor therapy, which is important to choose a kind of porous sensing film providing specific and sensitive refractive index (RI) changes. Metalorganic frameworks (MOFs) are crystalline materials with large surface area, adjustable pore size and high affinity, which are used to encapsulate bioactive molecules to form sensitive biometric recognition membranes. Compared with other substrates, MOFs can protect biomolecules from high temperatures and organic solvents. [7,8] In general, the physical and chemical properties of the drugs loaded by MOFs don't change. Drug molecules can be released to put into effect through external environment stimulation, free diffusion or skeleton degradation. Especially, due to the advantages of easy modification and high drug loading of zeolitic imidazolate framework (ZIF-8), it has great potential for the development of biosensors. [9,10] Optical fiber sensing technology has injected vitality into modern medical drug-loading detection technology, which reflects superior performance, such as compact and flexible structure, remote detection, anti-electromagnetic interference, reusability, biocompatibility, high sensitivity, and real-time monitoring. [11] The key point is that microfiber sensor can provide strong evanescent fields out of fiber cladding for high-sensitive biochemical measurement. As a new device, the microfiber refines the geometric parameters from the micron to even nano-scale and is compatible with nano-scale biochemical microparticles Effective chemotherapy treatment for cancer patients remains an urgent issue due to the difficulty in precisely delivering drugs to the tumor site. Based on the pH-responsive degradation characteristics of the zeolitic imidazolate framework (ZIF-8), the optical fiber drug delivery system is proposed to achieve efficient drug loading and release. ZIF-8 nanomaterial prepared by in-situ synthesis technology is not only the protective shell of the drug (doxorubicin hydrochloride, DOX) but also as the analyte collector on the optical fiber, which monitors the process of nano-scale drug l...

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Torsion and Temperature Sensor Based on Polished MSM Structure

Cited by 19 publications

References 19 publications

Analyzing spectral properties and sensing performance of multi-single-multi mode fiber combination

Analyzing spectral properties and sensing performance of multi-single-multi mode fiber combination

Temperature and Twist Sensor Based on the Sagnac Interferometer with Long-Period Grating in Polarization-Maintaining Fiber

Real‐Time Drug Delivery System Tracked Through an Optical Microfiber: Supporting Interface of Metal‐Organic‐Framework

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