Prof. Perry Shum Profile

Prof. Perry Shum

Chair Professor/Deputy Head of Research Dept. at Southern Univ of Science & Technology of China

SPIE Involvement:

Fellows Committee | Editor | Author

Area of Expertise:

Fiber Optics , Sensors , Laser

Publications (153)

Proceedings Article | 10 April 2020 Presentation + Paper

Temperature sensor based on selective liquid-filled twin-core photonic crystal fiber

Perry Ping Shum, Dora Juan Juan Hu, Zhilin Xu, Yongwei Zhu, Shuhui Liu, Yu Zheng, Yang Chen, Weijun Tong, Yue Meng, Georges Humbert, Baocheng Li, Chenlu Wang

Proceedings Volume 11354, 113542U (2020) https://doi.org/10.1117/12.2556997

KEYWORDS: Temperature sensors, Photonic crystal fibers, Optofluidics

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We experimentally demonstrated a temperature sensor by selectively infiltrating refractive index liquid (RIL) in the central air hole of a twin-core photonic crystal fiber (PCF). The selective liquid infiltration was realized by putting the PCF in the bulk liquid with its central air hole open for liquid infiltration using capillary effect. The rest of the air holes were covered by UV glue. The three-dimensional stage was used to translate the PCF, and a tapered SMF was used to transfer the UV glue to cover the air holes under the microscope. After UV glue was solidified by exposing the fiber end under the UV light, the PCF end was dipped into the RIL to fill the central air hole by capillary effect. Due to the large thermos-optic coefficient of the RIL, the RIL filled air channel would act as a liquid core whose core modes would be highly dependent on the ambient temperature. The core modes of the RIL filled core would be phase matched to the fundamental mode of the two solid cores. Therefore, the phase matching wavelengths for the mode coupling among the two solid cores of PCF and the liquid core were highly temperature sensitive. The resonant dips in the transmission spectrum were measured to estimate the temperature sensitivity. The experiment used a commercially available twin core PCF, and blocked all but the central airhole at one of the ends facets by UV glue (NOA81, Norland), the remaining open holes are infiltrated over a length of 10 cm by capillary force with fluid (Cargille Laboratories Inc. index-matching fluid, series A) that possesses a refractive index of 1.46 at 589.3nm, 25°C, and the thermal coefficient is – 0.000389 RIU/°C, which is around 10 times of that coefficient of silica. Any temperature induced changes will have an influence on the propagation properties because of the highly temperature response of the refractive index of the fluid. With a fiber cleaver, a 1.8 cm long PCF was then cut from the longer length of the partially liquid filled twin core PCF and then fusion spliced with SMFs at both ends to observe its transmission spectrum when the sample is heated. When the temperature increase to around 54°C, the liquid RI drops quickly to match that of silica, and a three parallel waveguide structure is formed, in which the central liquid waveguide have the same index value with the two solid core. Because of the small separation between adjacent waveguides, a strong mode-field overlap occurs, which leads to a significant enhancement of the coupling coefficient, therefore, light energy can be easily transferred between two solid cores and the liquid rod in a short coupling length. Thus, the transmission spectrum of the device contain two sets of interference fringe pattern, the large spectrum envelope originated from the interference between the three eigenmodes generated by three-parallel waveguide structure based on the mode coupling theory, and fine interference fringes generated by the interference between the higher order modes in one core. By tracking the dip wavelength shift of the large spectrum envelope, the sensor exhibited a high temperature sensitivity of up to 37.011 nm/°C within the temperature range from 53.8°C to 55°C due to the satisfaction of phase match condition, and maintain a high sensitivity of 19.681 nm/°C from 55°C to 58.2°C, which is benefit from the high thermal optic coefficient of the selectively filled liquid in the twin core PCF.

Proceedings Article | 14 February 2019 Paper

Multi-state solitons in a CFBG-based ultrafast bidirectional fiber laser

Yiyang Luo, Bowen Liu, Yingxiong Qin, Yang Xiang, Zhijun Yan, Qizhen Sun, Xiahui Tang, Deming Liu, Perry Ping Shum

Proceedings Volume 11048, 110483E (2019) https://doi.org/10.1117/12.2518282

KEYWORDS: Solitons, Fiber lasers, Mode locking, Ultrafast phenomena, Picosecond phenomena, Oscillators, Polarization, Signal processing, Oscilloscopes, Nonlinear optics

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Proceedings Article | 14 February 2019 Paper

Maximizing the security of digital chaos based OFDM-PON with a dynamical nonlinear transformation

Ping Shum, Mengfan Cheng, Shanshan Li, Lei Deng, Songnian Fu, Minming Zhang, Ming Tang, Deming Liu

Proceedings Volume 11048, 110482E (2019) https://doi.org/10.1117/12.2523026

KEYWORDS: Chaos, Orthogonal frequency division multiplexing, Matrices, Network security, Computer security, Quadrature amplitude modulation, Signal processing, Complex systems, Information security, Passive optical networks

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Proceedings Article | 14 February 2019 Paper

Robust digital-controllable broadband analog optical chaos generation

Ping Shum, Deming Liu, Zexi Zhao, Mengfan Cheng, Lei Deng, Minming Zhang, Songnian Fu, Ming Tang

Proceedings Volume 11048, 110482C (2019) https://doi.org/10.1117/12.2522998

KEYWORDS: Chaos, Signal generators, Signal processing, Electro optics, Semiconductor lasers, Data communications, Phase modulation

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Proceedings Article | 12 December 2018 Paper

Temperature sensor based on highly germanium-doped fiber with rounded tip

Lifeng Bao, Xinyong Dong, Perry Ping Shum, Changyu Shen

Proceedings Volume 10849, 1084918 (2018) https://doi.org/10.1117/12.2505585

KEYWORDS: Sensors, Temperature sensors, Temperature metrology, Single mode fibers, Refractive index, Reflection, Thermal optics, Michelson interferometers

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SPIE Journal Paper | 22 September 2018

Mid-IR supercontinuum generation in a single-mode ZBLAN fiber by erbium-doped fiber laser

Sivasankara Rao Yemineni, Wenn Jing Lai, Arokiaswami Alphones, Ping Shum

OE, Vol. 57, Issue 11, 111804, (September 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.11.111804

KEYWORDS: ZBLAN, Mid-IR, Mode locking, Supercontinuum generation, Femtosecond phenomena, Fiber lasers, Optical amplifiers, Scanning probe microscopy, Modulation, Pulsed laser operation

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Proceedings Article | 15 February 2018 Paper

Flat broadband supercontinuum generation in a short length of highly nonlinear fiber pumped by a femtosecond carbon-nanotube based passively mode-locked erbium-doped fiber laser

Sivasankara Rao Yemineni, Wenn Jing Lai , Alphones Arokiaswami, Ping Shum

Proceedings Volume 10516, 105160A (2018) https://doi.org/10.1117/12.2283385

KEYWORDS: Mode locking, Pulsed laser operation, Fiber lasers, Optical amplifiers, Nonlinear optics, Supercontinuum generation

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Proceedings Article | 15 February 2018 Paper

Mid-IR supercontinuum generation in a single-mode ZBLAN fiber pumped by a carbon-nanotube-based passively mode-locked erbium-doped femtosecond fiber laser

Sivasankara Rao Yemineni, Wenn Jing Lai, Alphones Arokiaswami, Ping Shum

Proceedings Volume 10516, 105160N (2018) https://doi.org/10.1117/12.2285315

KEYWORDS: Mode locking, ZBLAN, Mid-IR, Pulsed laser operation, Fiber lasers, Supercontinuum generation, Fiber amplifiers

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Proceedings Article | 29 April 2017 Open Access

Optical coherence tomography multichannel probe design for speckle reduction (Withdrawal Notice)

En Bo, Yuemei Luo, Xinyu Liu, Xianghong Wang, Si Chen, Xiaojun Yu, Shi Chen, Ping Shum, Linbo Liu, Dongyao Cui

Proceedings Volume 10340, 103401E (2017) https://doi.org/10.1117/12.2271547

KEYWORDS: Speckle, Optical coherence tomography, Biomedical optics, Signal to noise ratio, Image resolution, Esophagus, Tissues, Spectroscopy, Image quality, Polishing, Yield improvement, Silicon

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Proceedings Article | 23 April 2017 Paper

Refractive index sensor based on theta-shaped microfiber resonator and Vernier effect

Zhilin Xu, Yiyang Luo, Qizhen Sun, Perry Ping Shum, Zhifang Wu, Xuguang Shao, Deming Liu

Proceedings Volume 10323, 103233N (2017) https://doi.org/10.1117/12.2265277

KEYWORDS: Resonators, Refractive index, Sensors, Fabry–Perot interferometry, Optical fibers, Optical sensing, Fiber optics sensors, Reflectivity, Single mode fibers, Spectrum analysis

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Proceedings Article | 11 March 2016 Paper

Widely tunable multi-wavelength Tm-doped mode-locked fiber laser

Zhiyu Yan, Xiaohui Li, Biao Sun, Jiaqi Lou, Xia Yu, Qi Jie Wang, Perry Ping, Ying Zhang

Proceedings Volume 9728, 972812 (2016) https://doi.org/10.1117/12.2213974

KEYWORDS: Fiber lasers, Mode locking, Polarization, Solitons, Wavelength tuning, Tunable lasers, Wavelength division multiplexing, Birefringence, Surgery

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Proceedings Article | 28 September 2015 Paper

Quasi-distributed fiber sensor based on Fresnel-reflection-enhanced Incomplete-POTDR system

Hui Dong, Ming Tang, Songnian Fu, Perry Shum, Chaodong Wang, Yaling Zhou

Proceedings Volume 9634, 96347F (2015) https://doi.org/10.1117/12.2194481

KEYWORDS: Connectors, Polarization, Signal detection, Ferroelectric materials, Signal to noise ratio, Attenuators, Light sources, Signal attenuation, Mirrors, Fiber optics sensors

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Proceedings Article | 4 March 2015 Paper

Genetic algorithm based optimization of pulse profile for MOPA based high power fiber lasers

Ming Tang, Jiawei Zhang, Jun Shi, Songnian Fu, Lihua Li, Ying Liu, Xueping Cheng, Jian Liu, Ping Shum

Proceedings Volume 9344, 93442F (2015) https://doi.org/10.1117/12.2078558

KEYWORDS: Fiber amplifiers, Fiber lasers, Genetic algorithms, Optimization (mathematics), Oscillators, Laser marking, High power fiber lasers, Ytterbium, Pulsed laser operation, Pulse filters

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Proceedings Article | 2 March 2015 Paper

One-micron resolution optical coherence tomography (OCT) in vivo for cellular level imaging

Dongyao Cui, Xinyu Liu, Xiaojun Yu, Ding Sun, Yuemei Luo, Jun Gu, Ping Shum, Linbo Liu, Jing Zhang

Proceedings Volume 9312, 93123R (2015) https://doi.org/10.1117/12.2076438

KEYWORDS: Cameras, Optical coherence tomography, In vivo imaging, Signal to noise ratio, Image resolution, Imaging systems, Mirrors, Electrons, Spectral resolution, Near infrared

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Proceedings Article | 7 February 2015 Paper

Offset-16QAM-based coherent WDM with multi-carrier group detection

Songnian Fu, Meng Xiang, P. Shum, Deming Liu, M. Tang

Proceedings Volume 9389, 93890L (2015) https://doi.org/10.1117/12.2076882

KEYWORDS: Receivers, Wavelength division multiplexing, Optical filters, Orthogonal frequency division multiplexing, Analog electronics, Digital signal processing, Modulation, Filtering (signal processing), Polarization, Fourier transforms

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Proceedings Article | 7 February 2015 Paper

Spatial mode rotator based on mechanically induced twist and bending in few-mode fibers

Songnian Fu, Dawei Yu, Ming Tang, Perry Shum, Deming Liu

Proceedings Volume 9389, 938906 (2015) https://doi.org/10.1117/12.2076515

KEYWORDS: Optical fibers, Multiplexing, Single mode fibers, Polarization, Refractive index, Liquid crystal on silicon, Infrared cameras, Signal processing, Waveguide modes, CCD cameras

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Proceedings Article | 21 November 2014 Paper

Efficient phase-matched third harmonic generation from mid-IR to near-IR regions in a double asymmetric plasmonic slot waveguide

Tingting Wu, Yunxu Sun, Tianye Huang, Xuguang Shao, Perry Ping Shum

Proceedings Volume 9269, 92690N (2014) https://doi.org/10.1117/12.2066964

KEYWORDS: Waveguides, Silicon, Mid-IR, Plasmonics, Silver, Harmonic generation, Metals, Wave propagation, Thermography, Nonlinear optics

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SPIE Journal Paper | 28 August 2014 Open Access

Review of diverse optical fibers used in biomedical research and clinical practice

Gerd Keiser, Fei Xiong, Ying Cui, Perry Ping Shum

JBO, Vol. 19, Issue 08, 080902, (August 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.8.080902

KEYWORDS: Optical fibers, Tissue optics, Biomedical optics, Cladding, Single mode fibers, Refractive index, Medical research, Sensors, Signal attenuation, Fiber Bragg gratings

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Proceedings Article | 2 June 2014 Paper

Magnetic field sensor based on reflection spectrum measurement of fiber Bragg grating

Xinyong Dong, Jingyi Yang, Shangzhong Jin, Chi Chiu Chan, Perry Ping Shum

Proceedings Volume 9157, 91571F (2014) https://doi.org/10.1117/12.2059450

KEYWORDS: Fiber Bragg gratings, Magnetism, Sensors, Magnetic sensors, Temperature metrology, Optical fibers, Nanoparticles, Refractive index, Fiber optics sensors, Reflectivity

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Proceedings Article | 2 June 2014 Paper

Highly sensitive refractive index sensor based on two cascaded microfiber knots with Vernier effect

Qizhen Sun, Zhilin Xu, Weihua Jia, Perry Ping Shum, Deming Liu

Proceedings Volume 9157, 915786 (2014) https://doi.org/10.1117/12.2059467

KEYWORDS: Resonators, Sensors, Refractive index, Electronics engineering, Numerical analysis, Optical fibers, Computer simulations, Internet, Interferometers, Fiber Bragg gratings

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SPIE Journal Paper | 20 January 2014 Open Access

Noninvasive respiration movement sensor based on distributed Bragg reflector fiber laser with beat frequency interrogation

Jianghai Wo, He Wang, Qizhen Sun, Perry Ping Shum, Deming Liu

JBO, Vol. 19, Issue 01, 017003, (January 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.1.017003

KEYWORDS: Fiber lasers, Laser resonators, Sensors, Distributed Bragg reflectors, Polarization, Spectrum analysis, Packaging, Fiber optics sensors, Fiber Bragg gratings, Physiology

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Proceedings Article | 20 December 2013 Paper

Power-referenced refractometer based on hybrid fiber grating

Xinyong Dong, Jie Zheng, Perry Ping Shum

Proceedings Volume 9044, 90440G (2013) https://doi.org/10.1117/12.2037187

KEYWORDS: Refractive index, Cladding, Signal attenuation, Fiber Bragg gratings, Geometrical optics, Optical fibers, Modulation, Radio propagation, Structured optical fibers, Environmental monitoring

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Proceedings Article | 23 May 2013 Paper

Compact passively mode-locked fiber laser at 1.55 μm with low timing jitter of 8 fs

Kan Wu, Perry Ping Shum

Proceedings Volume 8733, 873313 (2013) https://doi.org/10.1117/12.2015566

KEYWORDS: Mode locking, Fiber lasers, Mirrors, Laser resonators, Wavelength division multiplexing, Reflection, Clocks, Single mode fibers, Photonics, Semiconductors

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Proceedings Article | 7 November 2012 Paper

A fiber-optic methane gas sensor system with improved accuracy using absorption-spectrum matched comb filter

Ming Tang, Songnian Fu, P. Shum, Zhiyong Zhao, Deming Liu, Duan Liu

Proceedings Volume 8421, 842165 (2012) https://doi.org/10.1117/12.970614

KEYWORDS: Methane, Gas sensors, Linear filtering, Absorption, Fiber optics sensors, Fiber optics, Optical filters, Absorption filters, Light sources, Infrared spectroscopy

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Proceedings Article | 7 November 2012 Paper

A Mach-Zehnder interferometer by combining a microtaper with a long period grating in an all solid photonic bandgap fiber and its temperature sensing characteristic

Xuan Quyen Dinh, Perry Ping Shum, Zhifang Wu, Meng Jiang, Zhi Wang, Yan-ge Liu

Proceedings Volume 8421, 84217B (2012) https://doi.org/10.1117/12.975192

KEYWORDS: Mach-Zehnder interferometers, Cladding, Solids, Carbon dioxide lasers, Single mode fibers, Refractive index, Interferometers, Optical design, Information science, Information technology

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Proceedings Article | 17 October 2012 Paper

Dual-polarization DBR fiber laser sensor for liquid-level measurement

Qizhen Sun, Perry Ping Shum, Xiaolei Li, Yi Dai, Jianghai Wo, Zhilin Xu, Deming Liu, Jiejun Zhang

Proceedings Volume 8421, 84214G (2012) https://doi.org/10.1117/12.974359

KEYWORDS: Liquids, Fiber lasers, Sensors, Laser resonators, Fiber Bragg gratings, Polarization, Birefringence, Fiber optics sensors, Dielectric polarization, Transducers

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SPIE Journal Paper | 8 March 2012

Measurement errors induced by retardance deviation in a rotatable retarder fixed polarizer Stokes polarimeter

Hui Dong, Yandong Gong, Perry Shum, Qizhen Sun

OE, Vol. 51, Issue 03, 033001, (March 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.3.033001

KEYWORDS: Wave plates, Polarimetry, Polarizers, Error analysis, Polarization, Commercial off the shelf technology, Interference (communication), Optical engineering, Terahertz spectroscopy, Terahertz radiation

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Proceedings Article | 6 February 2012 Paper

Analysis of spectral-phase conventional and long-range surface plasmon resonance biosensors

Cheng Wang, Ho-Pui Ho, Ping Shum

Proceedings Volume 8234, 823414 (2012) https://doi.org/10.1117/12.906756

KEYWORDS: Refractive index, Metals, Gold, Copper, Sensors, Silver, Surface plasmons, Aluminum, Dielectrics, Reflectivity

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Proceedings Article | 14 December 2011 Paper

Optical millimeter-wave generation utilizing optical parametric loop mirror and fiber Bragg grating

Ping Shum, Yang Jiang, Meng Jiang, Xinwu Yang

Proceedings Volume 8309, 830914 (2011) https://doi.org/10.1117/12.905615

KEYWORDS: Fiber Bragg gratings, Modulation, Optical filters, Electronic filtering, Mirrors, Single mode fibers, Signal generators, Telecommunications, Photonics, Modulators

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Proceedings Article | 30 November 2011 Paper

Stable CW operation in a ring fiber laser based on Er-doped photonic crystal fiber

Lu Chai, Minglie Hu, Perry Ping Shum, Kan Wu, Jingyan Li, Chingyue Wang, Nengli Dai, Chunmei Ouyang

Proceedings Volume 8307, 83071T (2011) https://doi.org/10.1117/12.904286

KEYWORDS: Fiber lasers, Continuous wave operation, Polarization, Photonic crystal fibers, Laser stabilization, Single mode fibers, Optoelectronics, Dispersion, Cladding, Polarizers

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Proceedings Article | 29 November 2011 Paper

A stable dual-wavelength single-longitudinal-mode fiber laser with a tunable wavelength spacing based on a chirped phase-shifted grating filter

Ping Shum, Swee Chuan Tjin, Yang Jiang, Meng Jiang, Bo Lin

Proceedings Volume 8307, 83070M (2011) https://doi.org/10.1117/12.904451

KEYWORDS: Fiber lasers, Optical filters, Microwave radiation, Spatial light modulators, Tunable filters, Signal generators, Phase shifts, Heterodyning, Photodetectors, Semiconductor optical amplifiers

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Proceedings Article | 17 May 2011 Paper

Photonic crystal fiber integrated microfluidic chip for highly sensitive real-time chemical sensing

Ying Zhang, Xia Yu, Ping Shum, Derrick Yong, Chi Chan

Proceedings Volume 7753, 775343 (2011) https://doi.org/10.1117/12.884646

KEYWORDS: Microfluidics, Refractive index, Rhodium, Biological and chemical sensing, Photonic crystal fibers, Optical fibers, Cladding, Chemical analysis, Optical alignment, Polymethylmethacrylate

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SPIE Journal Paper | 1 September 2010

Nelder-Mead simplex method for modeling of cascaded continuous-wave multiple-Stokes Raman fiber lasers

Chun Ho Tse, Ming Tang, Perry Shum, Ruifen Wu

OE, Vol. 49, Issue 09, 091009, (September 2010) https://doi.org/10.1117/12.10.1117/1.3484949

KEYWORDS: Raman spectroscopy, Fiber lasers, Fiber Bragg gratings, Continuous wave operation, Reflectivity, Optical engineering, Computer simulations, Wave propagation, Optimization (mathematics), Tolerancing

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Proceedings Article | 5 October 2009 Paper

Automatic multiple chemical components distinguishment

N. Ni, C. Chan, P. Shum

Proceedings Volume 7503, 75031E (2009) https://doi.org/10.1117/12.833522

KEYWORDS: Absorption, Databases, Spectroscopy, Near infrared, Gases, Molecular spectroscopy, Error analysis, Reliability, Pattern recognition, Optical fibers

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Proceedings Article | 5 October 2009 Paper

Temperature-insensitive 2-D fiber Bragg grating inclinometer

C. C. Chan, P. Shum, Kai Ni, Xinyong Dong, Shaoling He

Proceedings Volume 7503, 750340 (2009) https://doi.org/10.1117/12.835382

KEYWORDS: Fiber Bragg gratings, Sensors, Magnesium, Fiber optics sensors, Temperature metrology, Signal processing, Fiber optic components, Optoelectronics, Optical sensors, Optical communications

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Proceedings Article | 5 October 2009 Paper

Temperature insensitive accelerometer based on a strain-chirped FBG

P. Shum, C. Chan, Wenjun Zhou, Kai Ni, Xinyong Dong

Proceedings Volume 7503, 75033R (2009) https://doi.org/10.1117/12.835387

KEYWORDS: Fiber Bragg gratings, Sensors, Reflectivity, Optical fibers, Temperature metrology, Adhesives, Light sources, Reflection, Optoelectronics, Optical components

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SPIE Journal Paper | 1 January 2009 Open Access

Wide-range continuously tunable microwave photonic filter using high-birefringence linearly chirped fiber Bragg grating and polarization beamsplitters

Junqiang Zhou, Sheel Aditya, Ping Shum, Xia Li, B. P. Parhusip

OE, Vol. 48, Issue 01, 010502, (January 2009) https://doi.org/10.1117/12.10.1117/1.3059623

KEYWORDS: Polarization, Fiber Bragg gratings, Beam splitters, Microwave photonic filters, Phase modulation, Linear filtering, Optical filters, Refractive index, Picosecond phenomena, Microwave photonics

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Proceedings Article | 19 November 2008 Paper

Realizable multiclass QoS controlled optical buffer system in optical packet switching network

Xuguang Shao, Liren Zhang, Ping Shum

Proceedings Volume 7137, 71373U (2008) https://doi.org/10.1117/12.803349

KEYWORDS: Silver, Gold, Optical networks, Control systems, Packet switching, Performance modeling, Optical switching, Internet, Data storage, Aluminum

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Proceedings Article | 11 November 2008 Paper

All optical switch based on nonlinear polarization rotation (NPR) in semiconductor optical amplifier (SOA)

Chongqing Wu, Guo Ning, Vincent Wong, Desmond R. Lim, P. Shum

Proceedings Volume 7136, 71361Z (2008) https://doi.org/10.1117/12.802530

KEYWORDS: Polarization, Picosecond phenomena, Switches, Nonlinear optics, Semiconductor optical amplifiers, Switching, Beam splitters, Continuous wave operation, Modulation, Phase shifts

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Proceedings Article | 11 November 2008 Paper

Photonic monocycle pulse generation and modulation for ultra-wideband-over-fiber application

Kun Xu, Jianqiang Li, Wen-De Zhong, Songnian Fu, P. Shum

Proceedings Volume 7136, 71362K (2008) https://doi.org/10.1117/12.802518

KEYWORDS: Polarization, Modulation, Binary data, Modulators, Picosecond phenomena, Switching, Gaussian pulse, Nonlinear optics, Phase shifts, Single mode fibers

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Proceedings Article | 11 November 2008 Paper

Hole-assisted lightguide fiber for dispersion tailoring

Dora Juan Hu, Ping Shum, Huai Yu Meng, Chao Lu

Proceedings Volume 7134, 71343F (2008) https://doi.org/10.1117/12.803352

KEYWORDS: Dispersion, Refractive index, Cladding, Waveguides, Solids, Structured optical fibers, Optical fibers, Optical properties, Silica, Polymers

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Proceedings Article | 11 November 2008 Paper

Continuously tunable microwave photonic filter based on high-birefringence linearly chirped grating

X. Li, P. Shum, M. Tang, J. Zhou, S. Aditya, S. Fu, H. Dong

Proceedings Volume 7134, 71340Q (2008) https://doi.org/10.1117/12.803407

KEYWORDS: Phase modulation, Microwave photonic filters, Polarization, Fiber Bragg gratings, Linear filtering, Optical filters, Filtering (signal processing), Photodetectors, Network security, Microwave radiation

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Proceedings Article | 11 November 2008 Paper

Four-wave mixing-based all-optical signal processing with pulsed signal input

Songnian Fu, Xiaosheng Xiao, Ping Shum

Proceedings Volume 7134, 71341U (2008) https://doi.org/10.1117/12.803999

KEYWORDS: Signal processing, Phase shift keying, Distortion, All optical signal processing, Optical proximity correction, Cadmium, Phase conjugation, Modulation, Scanning probe microscopy, Four wave mixing

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Proceedings Article | 11 November 2008 Paper

Wavelength-spacing-tunable multiwavelength filter and laser using a fiber grating-based distributed F-P interferometer

H.-Y. Tam, C. Lu, P. Shum, Xinyong Dong

Proceedings Volume 7134, 713436 (2008) https://doi.org/10.1117/12.802339

KEYWORDS: Optical filters, Fiber lasers, Reflectors, Interferometers, Reflectivity, Fiber Bragg gratings, Wavelength division multiplexing, Linear filtering, Fabry–Perot interferometry, Fiber amplifiers

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Proceedings Article | 11 November 2008 Paper

The design and fabrication of optical fiber Bragg grating filter with dual-bandpass pair by phase sampling and phase shifts

Xia Li, P. Shum, Nam Quoc Ngo, Teehiang Cheng

Proceedings Volume 7134, 71340K (2008) https://doi.org/10.1117/12.802963

KEYWORDS: Phase shifts, Fiber Bragg gratings, Optical filters, Bandpass filters, Optical design, Optical fibers, Microwave radiation, Lithium, Electronic filtering, Microwave photonics

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Proceedings Article | 11 November 2008 Paper

Tunable single polarization Yb3+-doped fiber ring laser by using intracavity tilted fiber Bragg grating

P. Shum, X. P. Cheng, R. F. Wu, J. Q. Zhou

Proceedings Volume 7134, 71342V (2008) https://doi.org/10.1117/12.803446

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Polarization, Cladding, Polarizers, Tunable lasers, Optical filters, Ultraviolet radiation, Collimation, Power meters

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SPIE Journal Paper | 1 September 2008 Open Access

Analysis of hollow-core photonic bandgap fibers for evanescent wave biosensing

Jian Sun, Chi-Chiu Chan, Yifan Zhang, Ping Shum

JBO, Vol. 13, Issue 05, 054048, (September 2008) https://doi.org/10.1117/12.10.1117/1.2983676

KEYWORDS: Optical fibers, Refractive index, Water, Biological research, Absorption, Biosensors, Waveguides, Absorbance, Beam propagation method, Cladding

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SPIE Journal Paper | 1 June 2008

Effect of input polarization states on the error of polarization measurement

Hui Dong, Ping Shum

OE, Vol. 47, Issue 06, 065007, (June 2008) https://doi.org/10.1117/12.10.1117/1.2947072

KEYWORDS: Polarization, Error analysis, Optical engineering, Matrices, Optical fibers, Statistical analysis, Analytical research, Single mode fibers, Optical semiconductors, Fiber amplifiers

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Proceedings Article | 16 May 2008 Paper

Fiber Bragg grating based on nanostructure core fiber

P. Shum, X. Yu

Proceedings Volume 7004, 70041F (2008) https://doi.org/10.1117/12.785750

KEYWORDS: Fiber Bragg gratings, Nanostructures, Silica, Optical fibers, Nanolithography, Ultraviolet radiation, Refractive index, Signal attenuation, Single mode fibers, Photoelasticity

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Proceedings Article | 16 May 2008 Paper

Antiresonant guiding photonic crystal fibers for measuring refractive index

P. Shum, C. Chan, Y. Zhang, J. Sun

Proceedings Volume 7004, 70040U (2008) https://doi.org/10.1117/12.785307

KEYWORDS: Refractive index, Photonic crystal fibers, Sensors, Optical fibers, Liquids, Photonic crystals, Cladding, Waveguides, Silica, Light

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SPIE Journal Paper | 1 March 2008

Effect of absorption loss on the saturation characteristics of semiconductor optical amplifier

Ning Guo, Songniang Fu, Ping Shum, Chongquing Wu, Desmond Lim

OE, Vol. 47, Issue 03, 035004, (March 2008) https://doi.org/10.1117/12.10.1117/1.2896294

KEYWORDS: Absorption, Semiconductor optical amplifiers, Optical engineering, Signal attenuation, Optical amplifiers, Nonlinear optics, Solids, Continuous wave operation, Bandpass filters

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Proceedings Article | 25 February 2008 Paper

Novel multiple-frequency Q-switched fiber laser by using chirped fiber Bragg grating Fabry-Perot etalon

P. Shum, W. Tan, R. Wu, C. Tse, X. Cheng

Proceedings Volume 6873, 68731S (2008) https://doi.org/10.1117/12.762435

KEYWORDS: Fiber Bragg gratings, Fabry–Perot interferometers, Ferroelectric materials, Fiber lasers, Modulation, Q switched fiber lasers, Q switching, Optical simulations, Q switches, Reflectivity

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Proceedings Article | 14 January 2008 Paper

A multi-point temperature warning sensor system with different thresholds using a multi-channel reference FBG

Deming Liu, Xia Li, P. Shum, Ngo Quoc Nam, Teehiang Cheng, Qizhen Sun

Proceedings Volume 6781, 67812J (2008) https://doi.org/10.1117/12.743508

KEYWORDS: Fiber Bragg gratings, Sensors, Fiber lasers, Temperature metrology, Reflectivity, Modulation, Time division multiplexing, Pulsed laser operation, Head, Demodulation

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SPIE Journal Paper | 1 January 2008

Microwave photonic notch filter with an electro-absorption modulator in a Sagnac fiber loop

GuoXiang Ning, Ping Shum, Junqiang Zhou, Y. Gong

OE, Vol. 47, Issue 01, 018201, (January 2008) https://doi.org/10.1117/12.10.1117/1.2835460

KEYWORDS: Linear filtering, Modulators, Laser sources, Signal detection, Modulation, Microwave photonics, Microwave photonic filters, Optical filters, Interferometers

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Proceedings Article | 4 December 2007 Paper

All-optical microwave photonic filters with Hi-Bi linearly chirped grating

Yandong Gong, Ping Shum, H. Dong, M. Tang, Lam Quoc Huy, Juanjuan Hu, O. L. C. Michael, G. B. Ren, S. N. Fu, YongXin Guo, G. X. Ning

Proceedings Volume 6781, 67813F (2007) https://doi.org/10.1117/12.738710

KEYWORDS: Linear filtering, Microwave radiation, Radio over Fiber, Microwave photonic filters, Optical filters, Bandpass filters, Single mode fibers, Polarization, Coherence (optics), Phase modulation

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SPIE Journal Paper | 1 December 2007

Four-wave mixing assisted multiwavelength peak-power-equalized semiconductor optical amplifier laser

GuoXiang Ning, Ping Shum, Junqiang Zhou, Li Xia

OE, Vol. 46, Issue 12, 125008, (December 2007) https://doi.org/10.1117/12.10.1117/1.2823169

KEYWORDS: Four wave mixing, Fiber lasers, Semiconductor optical amplifiers, Semiconductor lasers, Laser optics, Fiber Bragg gratings, Optical engineering, Laser stabilization, Laser resonators, Polarization

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