Tongtong Xie

A High-Resolution Fiber Bragg Grating Liquid Level Sensing System Based on Optical Carrier Microwave Interferometry

Wenzhao Liu, Xi Zhang, Shiwei Liu, Tongtong Xie et autres

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A Flexibly Switchable Microwave Signal Generation Scheme by Using an Optoelectronic Oscillator Incorporating a Multi‐Passband Microwave Photonic Filter

H T Wang, Dian Zuo, Tongtong Xie, Z Li et autres

ABSTRACT In this paper, we propose a novel flexibly switchable frequency optoelectronic oscillator (OEO) based on a multi‐passband microwave photonic filter (MPF). The multi‐passband MPF based on a Solc‐Sagnac interferometer with two polarization‐maintaining fibers (PMFs) in the loop is employed to perform …

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High-Precision OEO-Based Respiratory Monitoring System With Agarose-Coated FBG Sensor

Li T, Qiuyi Shen, Tongtong Xie, Cheng Wang et autres

In this paper, a respiration monitoring sensor based on an Agarose-coated fiber Bragg grating (AC-FBG) and an optoelectronic oscillator (OEO) is proposed and experimentally demonstrated, which achieves high sensitivity and high-speed respiration signal detection by combining fiber optic sensing and OEO-based demodulating …

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Intensity demodulated FBG vibration sensing system based on optical carrier microwave interferometry

Wenzhao Liu, Tongtong Xie, Weiyu Dai, Shiwei Liu et autres

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Fiber-optic liquid level sensing system based on a titanium diaphragm extrinsic Fabry-Perot interferometer and microwave photonic filter

Zejia Luo, Yudong Wang, Shiwei Liu, Tongtong Xie et autres

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Tantalum Pentoxide Sensitization Empowers U-Shaped Dual-Channel SPR Fiber Sensor

Mengyuan Wu, Tongtong Xie, Shiwei Liu, Yuheng Jin et autres

To address the increasing demand for versatile applications, there is a pressing need for high-resolution sensing devices that can operate in intricate environmental conditions. This work demonstrates a highly sensitive U-shaped surface plasmon resonance (SPR) sensor with two independent sensing channels, based …

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High-Sensitivity Micro-Newton Force Sensor With Neural Network-Assisted Demodulation of Multimode Fiber Interferometer

Shiwei Liu, Xiaoqian Wang, Shuaihua Gao, W. D. Liu et autres

Accurate measurement of small forces is essential in fields such as micro-robots, nanotechnology, and biological cells. This paper introduces a high-sensitive optical fiber sensor for micro-newton forces measurement utilizing neural network-assisted demodulation. This sensor employs a singlemode-multimode-singlemode (SMS) multimodal interference structure, in …

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Drought legacy effects enhance tea plant drought tolerance by modulating the rhizosphere core microbiota

Tongtong Xie, Xiaoxia Zhao, Xiaochong Han, Wenjuan Ma et autres

The drought legacy effects significantly influence the drought resistance of plants; however, research examining the drought legacy effects of drought on tea plants remains limited. This study employed a two-stage pot experiment to simulate drought residual effects and investigate their influence on …

Sensitivity-Enhanced Optical Fiber Interferometric Phase Demodulation Based on Multipassband Microwave Photonic Filter With Frequency Down-Conversion

Tongtong Xie, Mengyuan Wu, Wen‐Zhao Liu, Shiwei Liu et autres

A phase sensitivity-enhanced demodulation system for optical fiber interferometers based on a multi passband microwave photonic (MWP) filter is proposed and experimentally demonstrated, which effectively breaks the trade-off between detection frequency and phase sensitivity, enabling the simultaneous realization of high sensitivity and …

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Flexible microwave pulses regulation in self-mode-locking optoelectronic oscillator

Qiuyi Shen, Tong Li, Hao Chen, Tongtong Xie et autres

The mode-locking characteristic and microwave pulses regulation based on a self-mode-locking optoelectronic oscillator (SML-OEO) are analyzed and experimentally demonstrated. The oscillating modes in the SML-OEO cavity can be phase-coherent by means of the inherent oscillatory characterization via the opto-electronic loop. A self-excited …

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Simultaneous refractive index and temperature sensing system realized by hybrid interferometer structures-based microwave photonic filter

Yan Lin Huang, Haoran Wang, Weiyu Dai, Tongtong Xie et autres

A sensing system that simultaneously measures refractive index (RI) and temperature using a hybrid fiber interferometers-based microwave photonic filter (MPF) has been proposed and experimentally demonstrated. An extrinsic Fabry-Perot interferometer (EFPI) based on single-mode fibers (SMFs) is employed for RI sensing and …

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Dual-Parameter Surface Plasmon Resonance Sensor for Simultaneous Detection of Humidity and Temperature Based on Cascaded PVA-GO Composite Film and PDMS Film

Jing Zhou, Mengyuan Wu, Tongtong Xie, Shiwei Liu et autres

A surface plasmon resonance (SPR) sensor based on a polyvinyl alcohol-graphene oxide (PVA-GO) composite film and a polydimethylsiloxane (PDMS) film was proposed for simultaneous measurement of relative humidity (RH) and temperature. The SPR effect was excited by an MMF-SMF-MMF cascaded structure coated …

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