Simultaneous generation of first- to fourth-order OAM modes based on a cascaded preset-twist long-period fiber grating [PDF]
NanophotonicsWe propose and demonstrate the simulation and fabrication of an all-fiber orbital angular momentum (OAM) mode converter capable of generating first- to fourth-order modes simultaneously, which is realized by inscribing a cascaded preset-twist long-period
Chang Wenzhe +6 more
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Angularly Cascaded Long-Period Fiber Grating for Curvature and Temperature Detection [PDF]
Sensors, 2023 A high-sensitivity curvature sensor with dual-parameter measurement ability based on angularly cascaded long-period fiber grating (AC-LPFG) is proposed and experimentally demonstrated, which consists of two titled LPFGs (TLPFGs) with different tilt ...
Anping Xiao +9 more
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A Seawater Salinity Sensor Based on Optimized Long Period Fiber Grating in the Dispersion Turning Point [PDF]
Sensors, 2023 Variations of seawater salinity often cause ocean internal waves, water masses and stratification, which affect the stability of the ocean environment.
Chao Du +8 more
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LPFG Biosensor for IL-6 Detection in Murine Serum Samples Associated with Ischemic Disease [PDF]
SensorsNowadays, optical fiber-based biosensors are widely used in various fields, particularly in medical diagnostics and the selection of appropriate treatments for certain diseases. One example is cerebral ischemic disease, where many biomarkers are released
Brenda Vertti-Cervantes +8 more
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Characteristic control of long period fiber grating (LPFG) fabricated by infrared femtosecond laser
Frontiers of Optoelectronics, 2012 Long period fiber gratings (LPFGs) with different spectral characteristics were fabricated with 1 kHz, 50 fs laser pulses. The contrast of resonant rejection band can be significantly increased by a proper amount of axial stress along a fiber during laser writing or post-processing with lower energy density laser irradiation.
Xiaoyan Sun +6 more
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Sensors, 2010 This paper presents the feasibility of utilizing fiber Bragg grating (FBG) and long-period fiber grating (LPFG) sensors for nondestructive evaluation (NDE) of infrastructures using Portland cement concretes and asphalt mixtures for temperature, strain ...
Jian-Neng Wang, Jaw-Luen Tang
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Development of LPFG-Based Seawater Concentration Monitoring Sensors Packaged by BFRP [PDF]
MicromachinesLeveraging the sensitivity of long-period fiber grating (LPFG) to changes in the environmental refractive index, an LPFG-based seawater concentration monitoring sensor is proposed. Considering the highly saltine and alkali characteristics of the sensor’s
Zhe Zhang +3 more
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Humidity Sensor Based on a Long-Period Fiber Grating Coated with Polymer Composite Film
Sensors, 2019 We demonstrate a simple and highly sensitive optical fiber relative humidity (RH) sensor based on a long-period fiber grating (LPFG) coated with polyethylene glycol (PEG)/polyvinyl alcohol (PVA) composite films.
Yunlong Wang +5 more
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A Simultaneous Measurement Sensor for Temperature and Curvature Based on Congruent Quasi-Helical Long-Period Fiber Grating [PDF]
SensorsThis article presents a long-period fiber-grating sensor based on a congruent quasi-helical structure (CQH-LPFG) with the two-parameter measurement of both temperature and curvature.
Haoen Sun +7 more
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Sensors, 2010 This work addresses the development and assessment of a fiber optical viscometer using a simple and low-cost long-period fiber grating (LPFG) level sensor and a capillary tube mechanism.
Jian-Neng Wang, Jaw-Luen Tang
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