Dr. Xiujuan Yu Profile

Dr. Xiujuan Yu

Doctoral Candidate at Tsinghua Univ

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Publications (15)

Proceedings Article | 24 December 2020 Paper

Polarimetric multilongitudinal-mode fiber laser sensor for strain, temperature, and fiber birefringence measurement

Jiarui Li, Lingchao Bai, Shuo Feng, Xuefeng Chen, Jintao Zhang, Xiujuan Yu

Proceedings Volume 11608, 1160806 (2020) https://doi.org/10.1117/12.2586470

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Proceedings Article | 23 October 2018 Paper

Multi-parameter sensing system based on a polarimetric fiber ring laser sensor and beat frequency demodulation

Xiujuan Yu, Xuefeng Chen, Yunxin Hu, Jintao Zhang, Shengchun Liu

Proceedings Volume 10821, 1082110 (2018) https://doi.org/10.1117/12.2502003

KEYWORDS: Fiber lasers, Birefringence, Polarization, Sensors, Fiber optics sensors, Temperature metrology, Sensing systems, Demodulation, Fiber Bragg gratings

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Proceedings Article | 10 January 2018 Paper

A 16-channel multi-longitudinal mode fiber laser sensor array system based on wavelength/frequency division multiplexing

Yunxin Hu, Zhiyong Han, Xiujuan Yu, Xuefeng Chen, Jintao Zhang, Shengchun Liu

Proceedings Volume 10618, 106180T (2018) https://doi.org/10.1117/12.2295288

KEYWORDS: Sensors, Fiber lasers, Multiplexing, Fiber Bragg gratings, Wavelength division multiplexing, Demodulation, Temperature metrology, Signal detection, Dense wavelength division multiplexing, Laser systems engineering

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The 16-channel multi-longitudinal mode fiber laser sensor array is investigated experimentally by the wavelength/frequency division multiplexing technique. In the proposed sensing system, a 4×4 sensor array is established by a few different coupling-ratio couplers, and four different fiber Bragg gratings (FBG) with different center wavelengths are used as four different sensing units. In each sensor unit, four parallel fiber laser sensors have the same operating wavelengths FBGs, but their effective laser cavity lengths slightly different from each other. Every cavity is formed by a fiber Bragg grating (FBG) serving as one reflection mirror, a piece of erbium-doped fiber (EDF) acting as the gain medium, and a Faraday rotator mirror (FRM) serving as other reflection mirror. When the pump power is higher than threshold value, the 16-channel fiber laser sensor array is stimulated stably. The frequency of the beat signal of the fiber laser sensor with different cavity lengths is used to realize frequency division multiplexing, and the wavelength division multiplexing is realized according to the operation wavelength of the fiber laser. The beat frequency signals are generated on a photodetector(PD), and monitored by a frequency spectrum analyzer(FSA). By tracking the shift of the beat frequency, all of the 16 laser sensors can be demodulated and real-time discriminated. The result of the experiment shows that different channels can be demodulated independently. The applications of the sensor array for strain and temperature measurements are also investigated. The strain or temperature information can be extracted from the change of the beat frequency signals according to the wavelength-frequency division multiplexing and the beat signal demodulation. The proposed hybrid multiplexing system can greatly reduce the weight, volume, and cost of the fiber laser sensors system while increasing the amount of the sensors multiplexable, which making it very competitive in some applications fields requiring large scale arrays such as space vehicles, marine infrastructure systems and constructional engineering.

Proceedings Article | 30 November 2012 Paper

Characteristics of in-fiber Mach-Zehnder interferometer formed by lateral offset splicing

Xiujuan Yu, Ge Li, Shengchun Liu, Jintao Zhang, Xuefeng Chen, Liying Zhang, Yanbiao Liao

Proceedings Volume 8561, 85611P (2012) https://doi.org/10.1117/12.981889

KEYWORDS: Interferometers, Mach-Zehnder interferometers, Single mode fibers, Sensors, Fusion splicing, Refractive index, Cladding, Samarium, Germanium, Lithium

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Proceedings Article | 7 November 2012 Paper

Hollow-core photonic bandgap fiber Mach-Zehnder interferometer based on a long period grating and an offset-splice joint

Xiujuan Yu, Jian Ju, Wei Jin, Jintao Zhang, Shengchun Liu

Proceedings Volume 8421, 84216T (2012) https://doi.org/10.1117/12.966812

KEYWORDS: Mach-Zehnder interferometers, Interferometers, Temperature metrology, Carbon dioxide lasers, Fusion splicing, Refractive index, Beam splitters, Cladding, Infrared cameras, Sensors

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Proceedings Article | 23 November 2011 Paper

Optical fibre relative humidity sensor based on a hydrogel coated long period grating

Xiujuan Yu, Liwei Wang, Jintao Zhang, Min Zhang, Shengchun Liu, Yanbiao Liao

Proceedings Volume 8199, 81990W (2011) https://doi.org/10.1117/12.904716

KEYWORDS: Humidity, Sensors, Refractive index, Cladding, Water, Optical fibers, Thin film coatings, Signal attenuation, Environmental sensing, Optical coatings

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Proceedings Article | 19 May 2011 Paper

Pd-Ag film coated cascaded long period gratings for hydrogen gas sensing

Zhen Yang, Xiujuan Yu, Xiaohui Chu, Min Zhang, Shurong Lai, Yanbiao Liao, Qisheng Li, Yi Zhang, Zhi Zhuang

Proceedings Volume 7753, 77539R (2011) https://doi.org/10.1117/12.885910

KEYWORDS: Hydrogen, Visibility, Sensors, Cladding, Coating, Signal attenuation, Palladium, Silver, Interferometers, Refractive index

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Proceedings Article | 18 May 2011 Paper

Response of hydrogel coated cascaded long period gratings to relative humidity

Xiujuan Yu, Min Zhang, Shengchun Liu, Yanbiao Liao, Wei Jin

Proceedings Volume 7753, 775390 (2011) https://doi.org/10.1117/12.883614

KEYWORDS: Humidity, Visibility, Coating, Cladding, Signal attenuation, Sensors, Temperature metrology, Water, Interferometers, Refractive index

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Proceedings Article | 9 November 2010 Paper

Research on the characteristics of hydrogel coated long period gratings

Xiujuan Yu, Min Zhang, Yanbiao Liao

Proceedings Volume 7853, 78533K (2010) https://doi.org/10.1117/12.871555

KEYWORDS: Refractive index, Cladding, Humidity, Signal attenuation, Coating, Water, Thin films, Waveguides, Thin film coatings, Optical fibers

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Proceedings Article | 23 November 2009 Paper

Characteristics analysis of cascaded long-period gratings with nm-thick film coating

Xiujuan Yu, Min Zhang, Paul Childs, Liwei Wang, Shurong Lai, Yanbiao Liao

Proceedings Volume 7508, 75081N (2009) https://doi.org/10.1117/12.839550

KEYWORDS: Refractive index, Cladding, Coating, Signal attenuation, Nanostructuring, Environmental sensing, Sensors, Biosensing, Liquids, Numerical analysis

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Proceedings Article | 5 October 2009 Paper

An extrinsic Fabry-Perot interferometric optical fiber sensor system for hydrogen detection

Zhen Yang, Min Zhang, Ming Lei, Xiujuan Yu, Yanbiao Liao, Shurong Lai, Qian Tian, Qisheng Li, Yi Zhang, Zhi Zhuang

Proceedings Volume 7503, 750323 (2009) https://doi.org/10.1117/12.835263

KEYWORDS: Hydrogen, Sensors, Silica, Fabry–Perot interferometers, Interferometry, Fiber optics sensors, Palladium, Light emitting diodes, Optical fibers, Spectroscopy

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Proceedings Article | 17 January 2008 Paper

Kerr effect in a passive optical ring-resonator gyroscope using a hollow-core photonic-band fiber

Xiujuan Yu, Yanbiao Liao, Min Zhang, Qingping Shi, Youlong Yu, Dejie Li

Proceedings Volume 6830, 683024 (2008) https://doi.org/10.1117/12.758481

KEYWORDS: Kerr effect, Single mode fibers, Resonators, Gyroscopes, Optical fibers, Silica, Sensors, Structured optical fibers, Coherence (optics), Zinc

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Proceedings Article | 20 January 2006 Paper

Measurement of the three-dimensional thermal expansion coefficients of Beryllium using fiber Bragg grating sensors

Xiujuan Yu, Youlong Yu, Baojin Peng, Min Zhang, Yanbiao Liao, Shurong Lai

Proceedings Volume 6027, 602743 (2006) https://doi.org/10.1117/12.668394

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Beryllium, Optical fibers, Environmental sensing, Refractive index, Fiber optics, Electronics, Electromagnetic interference

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Proceedings Article | 5 December 2005 Paper

Strain measurement of steel structure using a novel FBG sensor packaged by titanium alloy slice

Xiujuan Yu, Youlong Yu, Yanbiao Liao, Min Zhang, Shurong Lai

Proceedings Volume 6019, 60194G (2005) https://doi.org/10.1117/12.634185

KEYWORDS: Fiber Bragg gratings, Sensors, Titanium, Resistance, Temperature metrology, Packaging, Fiber optics sensors, Optical fibers, Refractive index, Adhesives

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Proceedings Article | 5 November 2005 Paper

Strain measurement of steel and concrete structure using novel surface-mounted fiber Bragg grating sensors

Xiujuan Yu, Youlong Yu, Yanbiao Liao, Min Zhang, Shurong Lai

Proceedings Volume 5998, 599807 (2005) https://doi.org/10.1117/12.630214

KEYWORDS: Fiber Bragg gratings, Sensors, Resistance, Temperature metrology, Packaging, Photography, Fiber optics sensors, Temperature sensors, Optical fibers, Refractive index

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Showing 5 of 15 publications

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