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Article
Engineering, Electrical & Electronic
Pourya Ghasemi et al.
Summary: A novel setup for a Double-Taper Mach-Zehnder Interferometer (DTMZI) is presented in this article to measure axial strain and torsion. The experimental results confirm the modal filtering effect of the epoxy and the relationships between the spectral shifts and applied displacements are obtained through differential accumulated phase analysis.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Rui Yin et al.
Summary: This paper proposes an integrated universal ultra-sensitive refractive index sensor based on SiO2 asymmetric Mach-Zehnder interference filter (AMZIF). The sensor's sensitivity is directly proportional to the arm length, and its measurement range can be expanded by reducing the diffraction order. The tested sensitivity of the sensor reaches 21193.3 nm/RIU, and it remains above 20000 nm/RIU for liquids with refractive index between 1.33 and 1.45.
Article
Engineering, Electrical & Electronic
Musen Yang et al.
Summary: A single-optic-fiber temperature and pressure sensor based on a side-polished optical fiber microcavity coated with a polydimethylsiloxane (PDMS) film has been proposed and fabricated. The sensor can simultaneously measure temperature and pressure, and has promising potential for optofluidic sensing and ocean detection due to its good sensitivity and simple fabrication.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Optics
Weihua Zhang et al.
Summary: A switchable and tunable erbium-doped fiber laser (EDFL) is proposed and experimentally verified, which can emit various laser states with different wavelengths by rotating the polarization controller angle. The laser has high stability, a high optical signal-to-noise ratio, and can be wavelength-tuned by changing the applied strain.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Engineering, Electrical & Electronic
Rodolfo Martinez-Manuel et al.
Summary: A machine learning algorithm is proposed in this paper for measuring the refractive index of liquid samples in a fiber refractometer. The algorithm overcomes the measurement ambiguity between samples above and below the effective refractive index of the fiber fundamental mode. By using a sensing head and the proposed algorithm, the system extends the sensing range and eliminates any ambiguity in the obtained refractive index values.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Weijia Bao et al.
Summary: In this paper, we propose and experimentally demonstrate a hyperelastic polymer fiber Fabry-Perot interferometer for nanoforce measurement. The sensor utilizes femtosecond laser pulse illumination and slit beam shaping to form refractive index modulation as the reflection mirrors of the interferometer in the fiber. The proposed sensor has high force sensitivity within a linearly elastic range, making it potentially beneficial for biochemical analysis and materials science.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Xuekai Gao et al.
Summary: A high-sensitivity and compact temperature sensor based on FMF and PCF has been developed. The sensor features a flexible sensor head and the ability to eliminate cross-sensitive issues, making it suitable for practical applications.
IEEE PHOTONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Jingyang Liu et al.
Summary: This paper presents a optical chaotic secure communication system with multi-dimensional keys and a complex entropy source, which enables secure communication in different modes and improves the security and efficiency of the system.
IEEE PHOTONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Mohammad Istiaque Reja et al.
Summary: This study presents a high-temperature interferometric pressure sensor using a pure silica four-hole microstructured optical fiber. The asymmetric geometry of the fiber converts hydrostatic pressure into an interferometric shift. The sensor operates at high temperatures, and temperature compensation is achieved using a Fourier approach. Experimental results show that the sensor has a linear response, excellent stability, and a high detection limit.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Weihao Lin et al.
Summary: A temperature sensor based on EDFCPT structure in fiber ring laser cavity was proposed and studied, utilizing erbium-doped fiber to fabricate the cascaded peanut structure for high sensitivity temperature measurement. Experimental results show that EDFCPT has higher temperature sensitivity, signal to noise ratio, and narrower bandwidth compared to EDFCP structure, indicating promising application prospects in aerospace and life health monitoring.
IEEE SENSORS JOURNAL
(2021)
Article
Optics
Wenguo Han et al.
Summary: A single-longitudinal-mode ring thulium/holmium co-doped fiber laser with switchable single- and dual-wavelength outputs is proposed, achieving high OSNR and stable performance. The switching operation is realized by tuning the pump power and polarization controller. This laser may have wide applications in microwave photonics generation and optical fiber laser sensor.
Article
Optics
Yichun Li et al.
Summary: A fiber in-line Mach-Zehnder interferometer has been proposed and experimentally demonstrated for simultaneous measurement of transverse loading and temperature. The sensor utilizes multimode interference in the multicore fiber to achieve high sensitivities for both transverse pressure and temperature measurements, showing potential applications in fields where dual measurements are required.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Jing Tian et al.
Summary: The compact optical magnetic field sensor proposed in this work combines a PMF-Sagnac loop with a fiber laser oscillation circuit to increase the signal-to-noise ratio and quality of the reflection spectrum. It demonstrates high sensitivity, stability, and fine reflection spectrum for different sensor head lengths.
Article
Engineering, Electrical & Electronic
Shujuan Li et al.
Summary: A novel method of flow measurement in oil well using fiber laser vibration sensor is proposed. The sensor detects fluid flow velocity by measuring pipe wall vibration, and the relationship between sensor vibration intensity and flow rate is shown to be a quadratic curve. The system demonstrates high sensitivity and can measure flow rates as low as 0.041 m/s in real time.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Optics
Shishi Xu et al.
Summary: The optic-fiber sensor based on the Mach-Zehnder interference principle consists of a lateral-offset spliced SMF-FCF-SMF interference structure. It has high sensitivity in measuring curvature and temperature, with a maximum sensitivity of -18.75 nm/m-1 for curvature and 74 pm/C for temperature. The sensor shows good linearity and has potential applications in industrial production, building monitoring, and other fields.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Qi Qin et al.
Summary: This article presents a switchable thulium-doped fiber laser with high OSNR, utilizing a home-made MMFBG as an optical filter for wavelength selection. The laser achieved up to 12 switchable lasing lines with minimal fluctuations in wavelength and output power. It also served as a fiber laser sensor, demonstrating a sensitivity of 1.16 pm for quantifying strain on the MMFBG.
IEEE PHOTONICS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Jian Zhao et al.
Summary: A fiber ring cavity laser temperature sensor was introduced and demonstrated, utilizing a combination of fiber Bragg grating (FBG) and no-core fiber coated with polymer. By embedding the sensor probe into an Er-doped fiber ring cavity laser system, improvements in spectral quality and detection limit were achieved. Experimental results showed good sensitivity and accuracy in measuring temperature variations within a certain range.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Electrical & Electronic
Xianchao Yang et al.
Summary: The strain- and temperature-sensing characteristics of fiber ring laser (FRL) sensors are comprehensively studied, with the reflected sensing head made up of spheroidal Fabry-Perot interferometer (FPI) concatenated with fiber Bragg grating (FBG) inserted in the cavity of FRL. The sensor demonstrated comparable sensitivities for strain and temperature, with low detection limits and high Q factors, making it potentially great for application in long-distance sensing systems.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Electrical & Electronic
Kuikui Guo et al.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2020)
Article
Optics
Andre D. Gomes et al.
OPTICS AND LASER TECHNOLOGY
(2020)
Article
Engineering, Electrical & Electronic
Javier Antonio Martin-Vela et al.
IEEE SENSORS JOURNAL
(2020)
Article
Optics
Gang Zhang et al.
Article
Engineering, Electrical & Electronic
Chunran Sun et al.
OPTICAL FIBER TECHNOLOGY
(2018)
Article
Engineering, Multidisciplinary
Song Zhou et al.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2017)
Article
Optics
Yuan Sun et al.
OPTICS COMMUNICATIONS
(2017)
Article
Engineering, Electrical & Electronic
Jiaqi Zhou et al.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2014)
Article
Optics
Jeremie Harris et al.
Article
Optics
Lai-Cai Xu et al.
OPTICS AND LASERS IN ENGINEERING
(2012)
