Prof. Songnian Fu Profile

Prof. Songnian Fu

at Huazhong Univ of Science and Technology

SPIE Involvement:

Editor | Author

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 | 14 February 2019 Paper

Sparse I/Q Volterra filter for optical 16-QAM signals in direct-detection Kramers-Kronig receiver

Liang Shu, Zhenming Yu, Zhiquan Wan, Tian Zhang, Kun Xu, Jianqiang Li, Xiang Li, Ming Luo, Songnian Fu

Proceedings Volume 11048, 110480G (2019) https://doi.org/10.1117/12.2518329

KEYWORDS: Receivers, Distortion, Signal detection, Optical filters, Electronic filtering, Optical amplifiers, Modulators, Reconstruction algorithms, Digital signal processing, Quadrature amplitude modulation

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Proceedings Article | 14 March 2018 Presentation

Quantum dots integrated fiber devices for smart communication and sensing applications (Conference Presentation)

Ming Tang, Feng Gao, Yang Wang, Huan Liu, Liang Xu, Zhenhua Feng, Songnian Fu, Deming Liu

Proceedings Volume 10536, 105360L (2018) https://doi.org/10.1117/12.2296403

KEYWORDS: Quantum dots, Structured optical fibers, Optical fibers, Telecommunications, Refractive index, Molecules, Fiber optic communications, Optical communications, Sensing systems, Semiconductor materials

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Smart functional fiber devices are indispensable for optical fiber based communication and sensing systems, in which the integration of fiber structure with smart semiconductor materials is essential. Among various choices, the colloidal quantum dot (CQD) is of great interests and its advantages includes: (a) the concentration of the photo-excited electrons can be relatively high due to the quantum confinement in the CQD, which means the refractive index of CQD could be altered with less power consumption; (b) CQD is a nanoscale dispersion solution thus the functional material can be deposited conformally on fiber, silicon chips or other complex structure surface; (c) CQD is a highly tunable material, and the chemical composition and operation wavelength can be specially designed for any wavelength window. In this work, we developed a platform to deposit the CQD with fiber structures for smart sensing and communication applications. First, we construct optical fiber antennas for gas sensing, in which the CQD conformally coated on the fiber surface behave like olfactory receptors. The gas molecules adsorbed on the quantum dots change the local carrier concentration in quantum dot solids, which leads to a change in their refractive index. This interaction of gas molecules with quantum dots could be transformed into optical signals through the optical fiber antennae. Owing to the large surface area, highly tunable physical and chemical properties of colloidal quantum dots, combined with the versatile fiber microstructure, the optical fiber antennae with quantum dots offer a new degree of freedom to precise, real-time and large-scale gas monitoring. Second, by using the light-excited carriers in CQD, a light controlled fiber device has been achieved as a delayed interferometric comb filter. The transmission spectrum can be easily tailored by mW-scale optical power. This device was applied in a 50 km standard single mode fiber (SSMF) based communication system with 12.5 Gbs On-Off-Keying (OOK) direct modulation for chirp management and dispersion compensation to achieve the error-free transmission.

Proceedings Article | 23 April 2017 Paper

Sweep free BOTDA based on DD-OOFDM channel estimation

Ming Tang, Can Zhao, Jiadi Wu, Hao Wu, Zhiyong Zhao, Yunli Dang, Songnian Fu

Proceedings Volume 10323, 103236E (2017) https://doi.org/10.1117/12.2263438

KEYWORDS: Digital signal processing, Channel projecting optics, Polarization, Signal processing, Optical amplifiers, Optical fibers, Signal detection, Orthogonal frequency division multiplexing, Spatial resolution, Single mode fibers

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Proceedings Article | 23 April 2017 Paper

Spatial-division multiplexed hybrid Raman and Brillouin distributed sensor employing multicore fiber

Ming Tang, Li Duan, Meng Wang, Songnian Fu, Weijun Tong, Deming Liu, Zhiyong Zhao, Yunli Dang

Proceedings Volume 10323, 103239C (2017) https://doi.org/10.1117/12.2267543

KEYWORDS: Raman spectroscopy, Multiplexing, Sensors, Raman scattering, Fiber optics sensors, Scattering, Single mode fibers, Temperature metrology, Laser scattering, Spatial resolution

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Proceedings Article | 23 April 2017 Paper

Few mode fibers based quasi-single mode Raman distributed temperature sensor

Hao Wu, Meng Wang, Tongqing Liu, Songnian Fu, Ming Tang, Weijun Tong, Chen Yang

Proceedings Volume 10323, 103236D (2017) https://doi.org/10.1117/12.2263426

KEYWORDS: Signal to noise ratio, Signal processing, Electronic filtering, Optical fibers, Raman scattering, Temperature sensors, Spatial resolution, Fiber optics sensors, Fusion splicing, Temperature metrology, Reflectometry

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Proceedings Article | 23 April 2017 Paper

Simplex coded polarization optical time domain reflectometry system

Chaodong Wang, Wenbo Chen, Ruolin Liao, Ming Tang, Songnian Fu, Lihai Liu

Proceedings Volume 10323, 103235Y (2017) https://doi.org/10.1117/12.2263180

KEYWORDS: Polarization, Reflectometry, Signal to noise ratio, Polarimetry, Geometrical optics, Single mode fibers, Sensing systems, Spatial resolution, Wave plates, Photodetectors

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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 | 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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SPIE Journal Paper | 17 December 2014

Joint digital signal processing of Nyquist-wavelength division multiplexing superchannel with group detection

Tianyun Zhang, Shuchang Yao, Songnian Fu, Ming Tang, Deming Liu

OE, Vol. 53, Issue 12, 126110, (December 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.12.126110

KEYWORDS: Digital signal processing, Receivers, Multiplexing, Signal detection, Analog electronics, Orthogonal frequency division multiplexing, Transmitters, Gaussian filters, Fiber optics, Polarization

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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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Showing 5 of 14 publications

SPIE Conference Volume | 18 December 2019

AOPC 2019: Optical Fiber Sensors and Communication

SPIE Conference Volume | 17 December 2018

Fiber Optic Sensing and Optical Communication

Conference Committee Involvement (4)

Conference on Optical Information and Network

30 November 2020 | Beijing, China

Optical Fiber Sensors and Communication

5 August 2019 | Beijing, China

Fiber Optic Sensing and Optical Communication

22 May 2018 | Beijing, China

Optical Information and Network (Optical Fiber Sensors)

4 June 2017 | Beijing, China

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