Dr. Tongyu Liu Profile

Dr. Tongyu Liu

at Intelligent Sensor Systems Ltd

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 14 February 2005 Paper

Optical sensor based on hybrid LPG/FBG in D-fiber for simultaneous refractive index and temperature measurement

Xianfeng Chen, Kaiming Zhou, Lin Zhang, Ian Bennion, Tongyu Liu

Proc. SPIE. 5634, Advanced Sensor Systems and Applications II

KEYWORDS: Refractive index, Optical sensors, Fiber Bragg gratings, Cladding, Sensors, Calibration, Etching, Ultraviolet radiation, Solids, Temperature metrology

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Proceedings Article | 14 February 2005 Paper

A low-cost multimode fiber Bragg grating sensor system

Tongyu Liu, Daorui Wang, Rasool Raenaei, Xianfeng Chen, Lin Zhang, Ian Bennion

Proc. SPIE. 5634, Advanced Sensor Systems and Applications II

KEYWORDS: Multimode fibers, Optical filters, Light sources, Light emitting diodes, Fiber Bragg gratings, Sensors, Single mode fibers, Sensing systems, Signal detection, Filtering (signal processing)

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Proceedings Article | 27 June 2002 Paper

Fiber optic acoustic emission sensor based on a fused tapered coupler

Crispin Doyle, Rongshen Chen, Tongyu Liu, Gangtie Zheng, Gerard Fernando

Proc. SPIE. 4694, Smart Structures and Materials 2002: Smart Sensor Technology and Measurement Systems

KEYWORDS: Signal to noise ratio, Ferroelectric materials, Sensors, Composites, Fiber optics sensors, Semiconductor lasers, Transducers, Acoustic emission, Acoustics, Systems modeling

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Proceedings Article | 31 August 2000 Paper

Analysis of acousto-optic modulation in optical fiber coupler

Rongsheng Chen, Yanbiao Liao, Gangtie Zheng, Tonguy Liu, Gerard Fernando

Proc. SPIE. 4074, Applications of Optical Fiber Sensors

KEYWORDS: Optical fibers, Ferroelectric materials, Modulation, Cladding, Sensors, Composites, Single mode fibers, Fiber couplers, Acoustics, Acousto-optics

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Proceedings Article | 31 May 1999 Paper

Online monitoring of amine concentration in the processing of amine/epoxy-based thermosets

Tonguy Liu, S. Elsby, Gerard Fernando

Proc. SPIE. 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials

KEYWORDS: Near infrared, Light sources, FT-IR spectroscopy, Scattering, Sensors, Fiber optics sensors, Epoxies, Absorbance, Chemical analysis, Absorption

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Proceedings Article | 31 May 1999 Paper

Evaluation of a low-cost optical-fiber-based strain sensor

D. Inder, M. Buckley, Tonguy Liu, Gerard Fernando

Proc. SPIE. 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials

KEYWORDS: Multimode fibers, Optical fibers, Sensors, Composites, Photography, Manufacturing, Profiling, Fusion splicing, Adhesives, Optics manufacturing

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Proceedings Article | 21 July 1998 Paper

Simultaneous strain and temperature measurements in composites using extrinsic Fabry-Perot interferometric and intrinsic rare-earth-doped fiber sensors

Tonguy Liu, Gerard Fernando, Zhiyi Zhang, Kenneth Grattan

Proc. SPIE. 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials

KEYWORDS: Optical fibers, Fabry–Perot interferometers, Fiber Bragg gratings, Sensors, Luminescence, Composites, Fiber optics sensors, Temperature sensors, Neodymium, Temperature metrology

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Proceedings Article | 21 July 1998 Paper

Simultaneous strain and temperature measurement using an integrated fiber Bragg grating/extrinsic Fabry-Perot sensor

Tonguy Liu, Gerard Fernando, Lin Zhang, Ian Bennion, Yun-Jiang Rao, David Jackson

Proc. SPIE. 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials

KEYWORDS: Carbon, Optical fibers, Fabry–Perot interferometers, Fiber Bragg gratings, Sensors, Quartz, Capillaries, Composites, Ocean optics, Temperature metrology

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Proceedings Article | 21 July 1998 Paper

Optical sensor system for monitoring the extent of mixing in thermosetting resins

Tonguy Liu, R. Mohamed, Gerard Fernando

Proc. SPIE. 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials

KEYWORDS: Optical sensors, Sensors, Polymers, Spectroscopy, Composites, Light scattering, Manufacturing, Epoxies, Chemical elements, Absorption

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Proceedings Article | 16 April 1998 Paper

Quartz and E-glass fiber self-sensing composites

K. Zolfaghar, N. Khan, David Brooks, Simon Hayes, Tonguy Liu, J. Roca, J. Lander, Gerard Fernando

Proc. SPIE. 3321, 1996 Symposium on Smart Materials, Structures, and MEMS

KEYWORDS: Carbon, Optical fibers, Waveguides, Cladding, Quartz, Composites, Silicon, Coating, Epoxies, Fiber coatings

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Proceedings Article | 6 June 1997 Paper

Multiplexed extrinsic Fabry-Perot sensor system for in-situ strain and impact damage detection in composites

Tonguy Liu, M. Wu, Gerard Fernando, Yun-Jiang Rao, David Jackson

Proc. SPIE. 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation

KEYWORDS: Carbon, Optical fibers, Light sources, Fabry–Perot interferometers, Sensors, Spectroscopy, Composites, Interferometry, Multiplexing, Charge-coupled devices

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Proceedings Article | 6 June 1997 Paper

Simultaneous strain and temperature measurements in composites using a multiplexed fiber Bragg grating sensor and an extrinsic Fabry-Perot sensor

Tonguy Liu, Gerard Fernando, Yun-Jiang Rao, David Jackson, Lin Zhang, Ian Bennion

Proc. SPIE. 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation

KEYWORDS: Optical fibers, Fabry–Perot interferometers, Fiber Bragg gratings, Reflection, Sensors, Spectroscopy, Composites, Multiplexing, Charge-coupled devices, Temperature metrology

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Proceedings Article | 24 September 1996 Paper

In-situ strain monitoring in composites using an embedded extrinsic Fabry-Perot interferometric sensor and a CCD detection system

Tonguy Liu, F. Ai-Khodairi, M. Wu, M. Irle, Gerard Fernando

Proc. SPIE. 2895, Fiber Optic Sensors V

KEYWORDS: Optical fibers, Light sources, Fabry–Perot interferometers, Sensors, Composites, Interferometry, Fiber optics sensors, Signal processing, Charge-coupled devices, CCD image sensors

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Proceedings Article | 24 September 1996 Paper

In-situ cure monitoring of an epoxy/amine resin system using an optical fiber transmission sensor

Peter Crosby, Graham Powell, Tonguy Liu, Xinyi Wu, Gerard Fernando

Proc. SPIE. 2895, Fiber Optic Sensors V

KEYWORDS: Optical fibers, FT-IR spectroscopy, Data modeling, Sensors, Spectroscopy, Fiber optics sensors, Epoxies, Near infrared spectroscopy, Data conversion, Absorption

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Proceedings Article | 24 September 1996 Paper

Intensity-based optical fiber sensors for condition monitoring of engineering materials

Crispin Doyle, Anthony Martin, M. Wu, Tonguy Liu, Simon Hayes, David Brooks, Rodney Badcock, Gerard Fernando

Proc. SPIE. 2895, Fiber Optic Sensors V

KEYWORDS: Optical fibers, Light sources, Waveguides, Sensors, Signal attenuation, Glasses, Composites, Fiber optics sensors, Damage detection, Visibility

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Proceedings Article | 24 September 1996 Paper

In-situ strain measurements in composites during fatigue testing using optical fiber Bragg gratings and a portable CCD detection system

Tonguy Liu, Gerard Fernando, Yun-Jiang Rao, David Jackson, Lin Zhang, Ian Bennion

Proc. SPIE. 2895, Fiber Optic Sensors V

KEYWORDS: Optical fibers, Fiber Bragg gratings, Reflection, Sensors, Spectroscopy, Composites, Fiber optics sensors, Optical testing, Charge-coupled devices, CCD image sensors

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Proceedings Article | 30 May 1996 Paper

In-situ self-sensing fiber reinforced composites

Simon Hayes, David Brooks, Tonguy Liu, S. Vickers, Gerard Fernando

Proc. SPIE. 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation

KEYWORDS: Carbon, Optical fibers, Silica, Waveguides, Cladding, Sensors, Glasses, Composites, Silicon, Fiber coatings

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Proceedings Article | 30 May 1996 Paper

Design, fabrication, and evaluation of an optical fiber sensor for tensile and compressive strain measurements via the use of white light interferometry

Tonguy Liu, David Brooks, Anthony Martin, Rodney Badcock, Gerard Fernando

Proc. SPIE. 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation

KEYWORDS: Carbon, Multimode fibers, Optical fibers, Fabry–Perot interferometers, Sensors, Capillaries, Composites, Fiber optics sensors, Fusion splicing, Monochromators

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Showing 5 of 18 publications

Conference Committee Involvement (2)

Advanced Sensor Systems and Applications III

12 November 2007 | Beijing, China

Advanced Sensor Systems and Applications II

8 November 2004 | Beijing, China

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