Prof. Tiegen Liu Profile

Prof. Tiegen Liu

Professor at Tianjin Univ

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (137)

Proceedings Article | 27 November 2024 Paper

A gradient-free training approach for optical neural networks based on stochastic functions

Ji Qi, Shuang Wang, Zheng Liu, Yunfan Zhang, Xiaomin Cai, Tiegen Liu, Tianhua Xu

Proceedings Volume 13236, 132360R (2024) https://doi.org/10.1117/12.3034514

KEYWORDS: Signal processing, Artificial neural networks, Neural networks, Prior knowledge, Optical filters, Machine learning, Deep learning, Optical signal processing

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Proceedings Article | 20 November 2024 Paper

Optical fiber lossy mode resonance immunoprobe for serum PSA detection

Xiaoshuang Dai, Shuang Wang, Xu Wang, Yong Wang, Xupeng Wu, Junfeng Jiang, Tiegen Liu

Proceedings Volume 13243, 1324307 (2024) https://doi.org/10.1117/12.3035055

KEYWORDS: Optical fibers, Principal component analysis, Sensors, Biosensors, Refractive index, Cladding, Cancer detection, Prostate cancer, Calibration

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Proceedings Article | 20 November 2024 Paper

Time delay estimation accuracy enhancement with envelope filtering in LFM-DAS

Enbang Zhao, Junfeng Jiang, Shuang Wang, Kun Liu, Tianhua Xu, Tiegen Liu

Proceedings Volume 13243, 132430I (2024) https://doi.org/10.1117/12.3036626

KEYWORDS: Pulse signals, Demodulation, Correlation coefficients, Modulators, Vibration, Signal processing, Laser frequency, Frequency modulation

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Proceedings Article | 20 November 2024 Paper

In situ state characterization monitoring of 18650 lithium-ion batteries with high-rate charge and discharge based on the high-stability fibre-optic sensor

Ke Tan, Shuang Wang, Junfeng Jiang, Hongyu Liu, Xiaoshuang Dai, Tiegen Liu

Proceedings Volume 13243, 132430E (2024) https://doi.org/10.1117/12.3035286

KEYWORDS: Microelectromechanical systems, Batteries, Optical microcavities, Fiber optics sensors, Sensors, Electrodes, Silicon, Fabrication, Semiconducting wafers

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Proceedings Article | 27 November 2023 Paper

Stable phase demodulation system for graphene oxide-based Fabry-Perot acoustic sensor

Anqi Chen, Shuang Wang, Lili Hou, Zhiyuan Li, Xueping Li, Haokun Yang, Xiaona Du, Junfeng Jiang, Tiegen Liu

Proceedings Volume 12771, 127710U (2023) https://doi.org/10.1117/12.2689233

KEYWORDS: Sensors, Demodulation, Acoustics, Vibration, Fiber optics sensors, Graphene, Fabry–Perot interferometers, Signal intensity, Oxides, Quartz

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Proceedings Article | 27 November 2023 Paper

High-sensitivity refractive-index-distributed optical fiber sensor based on optical frequency domain reflectometry

Peidong Hua, Zhenyang Ding, Kun Liu, Haohan Guo, Teng Zhang, Sheng Li, Ji Liu, Junfeng Jiang, Tiegen Liu

Proceedings Volume 12771, 127710F (2023) https://doi.org/10.1117/12.2685882

KEYWORDS: Fiber optics sensors, Sensors, Refractive index, Biosensors, Reflectometry, Single mode fibers, Rayleigh scattering, Optical fibers, Fiber optics, Biosensing

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Proceedings Article | 27 November 2023 Paper

Detection of DNA hybridization using liquid crystal based whispering gallery mode microbubble

Yaoxin Fu, Tianhua Xu, Haonan Wang, Ziyihui Wang, Yunfan Zhang, Junfeng Jiang, Tiegen Liu

Proceedings Volume 12771, 1277106 (2023) https://doi.org/10.1117/12.2680825

KEYWORDS: Liquid crystals, Whispering gallery modes, Molecules, Optical microcavities, Biosensors, Optofluidics, Target detection, Microresonators, Biosensing, Biomolecules

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Proceedings Article | 27 November 2023 Paper

Fast-recovering phi-OTDR system based on multi-sideband pulse modulation

Yixuan Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Zhenyang Ding, Tianhua Xu, Tiegen Liu

Proceedings Volume 12771, 127710G (2023) https://doi.org/10.1117/12.2686669

KEYWORDS: Modulation, Pulse signals, Signal detection, Demodulation, Sampling rates, Acoustics, Vibration, Optical filters

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Proceedings Article | 28 September 2023 Paper

Acoustic-optomechanical oscillator for low noise equivalent pressure and large broadband response acoustic sensing applications

Liu Yize, Junfeng Jiang, Tiegen Liu

Proceedings Volume 12813, 128130D (2023) https://doi.org/10.1117/12.2692140

KEYWORDS: Acoustics, Optical microcavities, Acoustic waves, Optomechanical design

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Proceedings Article | 28 September 2023 Paper

Ultra-long-range modulated asymmetric vibration sensor based on high-frequency carrier

Xinxin Hu, Kun Liu, Yuelang Huang, Junfeng Jiang, Zhenyang Ding, Tiegen Liu

Proceedings Volume 12813, 128130A (2023) https://doi.org/10.1117/12.2691732

KEYWORDS: Modulation, Vibration, Optical amplifiers, Sensors, Sensing systems, Phase modulation, Mach-Zehnder interferometers, Data acquisition, Fiber lasers, Erbium lasers

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Proceedings Article | 28 September 2023 Paper

Rapid phase interrogation method for dynamic pressure measurement based on Fabry-Perot sensor

Zhiyuan Li, Shuang Wang, Junfeng Jiang, Xiaoshuang Dai, Haokun Yang, Tiegen Liu

Proceedings Volume 12813, 1281309 (2023) https://doi.org/10.1117/12.2691718

KEYWORDS: Sensors, Fabry–Perot interferometers, Optical path differences, Fiber optics sensors, Signal detection, Polarization, Data acquisition

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Proceedings Article | 28 September 2023 Paper

Simultaneous low- and high-wavenumber optical fiber CARS probe using vector adjustment and pulse-to-pulse alignment

Tong Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Panpan Niu, Liu Yize, Tianhua Xu, Tiegen Liu

Proceedings Volume 12813, 1281308 (2023) https://doi.org/10.1117/12.2691713

KEYWORDS: Pulse signals, Optical fibers, Signal detection, Raman spectroscopy, Vibration, Ultrafast phenomena, Optical filters, Dichroic mirrors, Bioalcohols, Tunable filters

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Proceedings Article | 28 September 2023 Paper

A high-speed demodulation scheme for phi-OTDR system based on dual-sideband modulation

Yixuan Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Zhenyang Ding, Tianhua Xu, Tiegen Liu

Proceedings Volume 12813, 1281307 (2023) https://doi.org/10.1117/12.2691710

KEYWORDS: Signal detection, Modulation, Demodulation, Pulse signals, Vibration, Optical sensing, Optical fibers, Electronic filtering, Computer hardware

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Proceedings Article | 28 September 2023 Paper

Electrochemical behavior investigation of ITO coated optical fiber

Xiaoshuang Dai, Ke Tan, Hongyu Liu, Zhiyuan Li, Shuang Wang, Tiegen Liu

Proceedings Volume 12813, 1281306 (2023) https://doi.org/10.1117/12.2691699

KEYWORDS: Optical fibers, Electrodes, Multimode fibers, Fiber coatings, Electrical conductivity, Diffusion, Magnetrons

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Proceedings Article | 21 December 2022 Presentation + Paper

Amplifier limited information rates in high-speed optical fiber communication systems

Ji Qi, Tianhua Xu, Zheng Liu, Cenqin Jin, Tongyang Xu, Lingbo Li, Leslie Kanthan, Jian Zhao, Tiegen Liu

Proceedings Volume 12314, 1231404 (2022) https://doi.org/10.1117/12.2643394

KEYWORDS: Telecommunications, Signal to noise ratio, Fiber optic communications, Optical amplifiers, Digital signal processing, Fiber amplifiers, Modulation, Binary data, Systems modeling

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Proceedings Article | 19 December 2022 Presentation + Paper

Detection of streptavidin using liquid crystal based whispering gallery mode microbubble

Haonan Wang, Tianhua Xu, Ziyihui Wang, Yaoxin Fu, Junfeng Jiang, Tiegen Liu

Proceedings Volume 12321, 1232104 (2022) https://doi.org/10.1117/12.2637884

KEYWORDS: Liquid crystals, Proteins, Molecules, Optofluidics, Resonators, Sensors, Optical microcavities, Biosensing

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Protein is a complex chemical substance essential for human survival. Traditional protein detection methods, such as colorimetry, electrochemical analysis, and enzyme-linked immunosorbent assays, have shown good specificity and accuracy for the protein detection. However, all these methods require specialized instruments, and the detection procedures are laborious and time-consuming. As a result, a rapid, sensitive, label-free protein detection method is urgently needed. Herein, we have developed an ultra-sensitive biosensor for the detection of low-concentration protein molecules, employing liquid crystal (LC)-amplified optofluidic resonator. Since the orientations of LCs highly depend on the surface biomolecular binding processes, LCs can be employed to realize the extremely sensitive detection of biomolecules. Immobilized protein molecules interfere with the orientation of LCs by reducing the vertical anchoring force from the alignment layer in which the spectral wavelength shift was monitored as a sensing parameter. A biosensing platform based on an LC-amplified optofluidic whispering gallery mode (WGM) resonator was designed and studied accordingly. Due to the simultaneous interaction of the WGM and the LCs in the optofluidic resonator, the changes caused by the injection of protein molecules will be amplified, resulting in a shift in the resonance wavelength. Total wavelength shifts scale proportionally to the molecular concentrations of the protein within a certain range. The detection limit for streptavidin (SA) can reach as low as the femtometer level, which is significantly higher than the detection limit in the classic polarized optical microscope (POM) method visible with the naked eye. In addition to SA, the LC-based optofluidic resonator can also be applied to detect a variety of protein molecules. Our study demonstrates that LC-amplified optofluidic resonator can provide a novel solution for ultrasensitive real-time characterization of biosensing and biomolecular interactions.

Proceedings Article | 19 December 2022 Poster + Paper

Label-free protein quantitation using liquid crystal-enhanced optofluidic biosensor

Ziyihui Wang, Tianhua Xu, Haonan Wang, Yize Liu, Kun Liu, Junfeng Jiang, Yu-Cheng Chen, Tiegen Liu

Proceedings Volume 12321, 123210Q (2022) https://doi.org/10.1117/12.2638371

KEYWORDS: Proteins, Liquid crystals, Molecules, Optofluidics, Biosensors, Microresonators, Biosensing, Resonators, Optical microcavities, Refractive index

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Proceedings Article | 26 July 2022 Paper

A fast endpoint detection algorithm for dual Mach-Zehnder interferometer vibration sensing system

Yuelang Huang, Kun Liu, Junfeng Jiang, Zhenshi Sun, Xibo Jin, Kang Xue, Sichen Li, Tiegen Liu

Proceedings Volume 12279, 122790O (2022) https://doi.org/10.1117/12.2616436

KEYWORDS: Signal to noise ratio, Signal detection, Sensing systems, Signal processing, Mach-Zehnder interferometers, Detection and tracking algorithms, Sensors, Optical fibers

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Proceedings Article | 26 July 2022 Paper

Whisker array based on fiber Bragg grating for surface shape sensing

Haokun Yang, Shuang Wang, Kun Liu, Chenyu Fang, Zhiyuan LI, Jinglong Zhang, Tiegen Liu

Proceedings Volume 12279, 1227905 (2022) https://doi.org/10.1117/12.2616426

KEYWORDS: Fiber Bragg gratings, Sensors, Calibration, Optical fibers, Spatial resolution, Environmental sensing, Distance measurement, Signal processing, Shape analysis, Reconstruction algorithms

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Proceedings Article | 26 July 2022 Paper

Pattern recognition using multi-dimensional hybrid feature extraction scheme in optical fiber distributed vibration sensing system

Kang Xue, Kun Liu, Junfeng Jiang, Zhenshi Sun, Yuelang Huang, Sichen Li, Xibo Jin, Tiegen Liu

Proceedings Volume 12279, 122790B (2022) https://doi.org/10.1117/12.2616437

KEYWORDS: Feature extraction, Sensing systems, Optical fibers, Wavelets, Wavelet packet decomposition, Sensors, Fiber optics, Signal detection

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Proceedings Article | 26 July 2022 Paper

Range enhancement of the dynamic frequency measurement in phase-sensitive OTDR with a symmetric fiber interferometer

Zhenshi Sun, Kun Liu, Junfeng Jiang, Kang Xue, Yuelang Huang, Tiegen Liu

Proceedings Volume 12279, 1227906 (2022) https://doi.org/10.1117/12.2616395

KEYWORDS: Demodulation, Signal to noise ratio, Signal detection, Modulation, Sensors, Optical filters, Backscatter, Reflectometry, Sensing systems, Interferometers

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Proceedings Article | 26 July 2022 Paper

Highly sensitive optical fiber micro-cavity sensors

Junfeng Jiang, Kun Liu, Shuang Wang, Tianhua Xu, Xuezhi Zhang, Panpan Niu, Yize Liu, Ziyihui Wang, Zhe Yu, Tiegen Liu

Proceedings Volume 12279, 1227902 (2022) https://doi.org/10.1117/12.2616471

KEYWORDS: Fiber optics sensors, Sensors, Optical fibers, Liquid crystals, Fiber lasers, Nanoparticles, Microfluidics, Magnetic sensors

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Proceedings Article | 26 July 2022 Paper

A denoising and positioning method of long-distance fiber optic perimeter security system based on φ-OTDR

Sichen Li, Kun Liu, Junfeng Jiang, Zhenshi Sun, Kang Xue, Yuelang Huang, Xibo Jin, Tiegen Liu

Proceedings Volume 12279, 122790S (2022) https://doi.org/10.1117/12.2616554

KEYWORDS: Denoising, Image denoising, Discrete wavelet transforms, Interference (communication), Wavelets, Signal processing, Raman spectroscopy, Optical fiber cables, Signal to noise ratio

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Proceedings Article | 26 July 2022 Paper

Application of SVM algorithm based on thulium doped fiber ring system in ammonia quantitative analysis

Jifang Shan, Kun Liu, Junfeng Jiang, Yafan Li, Tiegen Liu

Proceedings Volume 12279, 122790P (2022) https://doi.org/10.1117/12.2616443

KEYWORDS: Quantitative analysis, Absorption, Statistical modeling, Thulium, Sensing systems, Data modeling, Fiber lasers, Optimization (mathematics)

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Proceedings Article | 26 July 2022 Paper

Increase demodulation rate of optical fiber distribution acoustic sensing

Yixuan Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Zhenyang Ding, Tianhua Xu, Tiegen Liu

Proceedings Volume 12279, 1227909 (2022) https://doi.org/10.1117/12.2616538

KEYWORDS: Demodulation, Acoustics, Signal detection, Data acquisition, Signal processing, Optical fibers, Data processing, Spatial resolution, Optical sensing, Parallel computing

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Proceedings Article | 8 July 2022 Paper

Attention-based denoising for polarimetric images

Hedong Liu, Haofeng Hu, Hongyuan Wang, Tiegen Liu

Proceedings Volume 12281, 1228106 (2022) https://doi.org/10.1117/12.2607380

KEYWORDS: Polarization, Polarimetry, Denoising, Signal to noise ratio, Imaging systems, Visualization, Cameras, Image denoising, Sensors, Visual analytics

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Proceedings Article | 8 July 2022 Paper

Rapid automatic underwater image recovery method based on polarimetric imaging

Hongyuan Wang, Haofeng Hu, Junfeng Jiang, Jianuo Xu, Hedong Liu, Tiegen Liu

Proceedings Volume 12281, 122810J (2022) https://doi.org/10.1117/12.2607171

KEYWORDS: Scattering, Polarization, Polarimetry, Light scattering, Image restoration, Image processing, Underwater imaging, Cameras, Polarizers

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Underwater imaging plays an important role in underwater scientific research, biological monitoring, underwater rescue, and military defense. However, the scattering and absorption of particles in the scattering medium lead to the distortion of the originally ordered wavefront phase and the image degradation. Polarimetric imaging technology has become an effective method for underwater image recovery based on its unique advantages. However, traditional polarimetric techniques require mechanically rotating the linear polarizer to find the two images that are brightest (the backscattered light is maximally through the polarizer) and darkest (the backscattered light is maximally blocked by the polarizer). Most polarimetric imaging techniques combined with conventional methods require the presence of a background region in the image to estimate the characteristics of backscattered light. There are also some polarimetric imaging methods that do not require a background area in the image, but most of them require prior knowledge and complex algorithms. All these greatly affect the real-time application of polarimetric imaging technology. In this paper, a rapid automatic underwater image recovery method based on polarimetric imaging is proposed. We optimize the traditional polarimetric imaging method based on the scattering imaging model and solve the problem that the traditional method requires an unsupervised image quality evaluation index to correct the intermediate parameters and selecting the background region, which realize the scattering suppression for the underwater image without background region. The experimental results show that our method can process a 320,000-pixel image in only 0.007 seconds. The proposed method can be applied to the current polarimetric imaging instrument system and has a good effect on underwater image recovery, and the recovery results are almost without distortion. It has strong robustness and is also applicable to images without background region, which provide a promising application prospect in the field of underwater imaging.

Proceedings Article | 8 July 2022 Paper

Fiber optic SPR sensor based on the heterostructure of MoS2/WS2 with high figure of merit

Jianying Jing, Kun Liu, Junfeng Jiang, Tianhua Xu, Shuang Wang, Jinying Ma, Zhao Zhang, Wenlin Zhang, Tiegen Liu

Proceedings Volume 12283, 1228305 (2022) https://doi.org/10.1117/12.2616434

KEYWORDS: Sensors, Fiber optics sensors, Surface plasmons, Fiber optics, Refractive index, Optical fibers

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Proceedings Article | 15 October 2021 Paper

Highly sensitive temperature sensor with optomechanofluidic resonators

Yize Liu, Junfeng Jiang, Kun Liu, Shuang Wang, Panpan Niu, Tong Wang, Tiegen Liu

Proceedings Volume 11901, 119010D (2021) https://doi.org/10.1117/12.2602546

KEYWORDS: Resonators, Sensors, Temperature sensors, Oscillators, Capillaries

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Proceedings Article | 9 October 2021 Paper

Feasibility assessment of an optical sensor for long-term electrocardiogram monitoring

Jing Zhao, Mingwei Li, Qi Wang, Hongxia Zhang, Tiegen Liu, Dagong Jia

Proceedings Volume 11901, 1190104 (2021) https://doi.org/10.1117/12.2602466

KEYWORDS: Electrocardiography, Optical sensors, Heart, Detection and tracking algorithms, Medicine, Electromagnetism, Databases, Statistical analysis, Sensors, Electro optics

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Proceedings Article | 9 October 2021 Presentation + Paper

Optical fiber probe for CARS spectroscopy

Tong Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Panpan Niu, Yize Liu, Tiegen Liu

Proceedings Volume 11901, 119010F (2021) https://doi.org/10.1117/12.2602310

KEYWORDS: Optical fibers, Raman spectroscopy, Spectroscopy, Signal detection

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Proceedings Article | 9 October 2021 Presentation + Paper

Orthogonal phase demodulation system with wide frequency band response based on birefringent crystals and polarization technology

Zhiyuan Li, Shuang Wang, Junfeng Jiang, Yin Yu, Haokun Yang, Wenyan Liu, Peng Zhang, Tiegen Liu

Proceedings Volume 11901, 119010Q (2021) https://doi.org/10.1117/12.2601279

KEYWORDS: Demodulation, Polarization, Sensors, Acoustics, Light sources, Optical fibers, Signal to noise ratio, Signal detection, Polarizers

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Proceedings Article | 9 October 2021 Paper

Increase measurement range, distance, and speed of optical fiber distribution acoustic sensing

Junfeng Jiang, Kun Liu, Shuang Wang, Zhe Ma, Guanghua Liang, Yixuan Wang, Tiegen Liu

Proceedings Volume 11902, 1190206 (2021) https://doi.org/10.1117/12.2602101

KEYWORDS: Distance measurement, Phase shift keying, Modulation, Acoustics, Fiber Bragg gratings, Optical fibers, Signal to noise ratio, Demodulation, Optical sensing, Graphics processing units

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Proceedings Article | 9 October 2021 Presentation + Paper

Fiber-laser-enhanced WGM microtubule cavity for myocardial infarction biomarker detection

Panpan Niu, Junfeng Jiang, Shuang Wang, Tong Wang, Yize Liu, Tiegen Liu

Proceedings Volume 11901, 1190103 (2021) https://doi.org/10.1117/12.2602424

KEYWORDS: Biosensors, Optical fibers, Sensors

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Proceedings Article | 9 October 2021 Presentation + Paper

Fiber-optic airflow sensor for air quantity estimation in air conduit

Peng Zhang, Shuang Wang, Junfeng Jiang, Zhiyuan Li, Haokun Yang, Tiegen Liu

Proceedings Volume 11901, 119010B (2021) https://doi.org/10.1117/12.2601209

KEYWORDS: Sensors, Fiber optics sensors, Fiber optics, Metals, Velocity measurements, Interferometers, Vacuum fluorescent displays, Optical fibers, Ceramics, Calibration

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Proceedings Article | 9 October 2021 Presentation + Paper

High sensitivity distributed static strain sensing based on all grating optical fiber in optical frequency domain reflectometry

Chenhuan Wang, Kun Liu, Yuanyao Li, Dongfang Zhu, Ming Pan, Zeen Chen, Haohan Guo, Yin Yu, Junfeng Jiang, Tiegen Liu

Proceedings Volume 11901, 119010C (2021) https://doi.org/10.1117/12.2601073

KEYWORDS: Optical fibers, Signal to noise ratio, Spatial resolution, Reflectometry, Polarization, Single mode fibers, Interferometers, Sensing systems, Fiber Bragg gratings, Interference (communication)

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Proceedings Article | 9 October 2021 Presentation + Paper

Evaluation of transmission reach and information rates in nonlinear optical fiber communication systems

Mupeng Li, Tianhua Xu, Jiazheng Ding, Zheng Liu, Wenxiu Hu, Junfeng Jiang, Tiegen Liu

Proceedings Volume 11891, 1189109 (2021) https://doi.org/10.1117/12.2602418

KEYWORDS: Signal to noise ratio, Telecommunications, Modulation, Optical fibers, Digital signal processing, Systems modeling, Interference (communication), Transmittance, Optical amplifiers, Optical communications

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Proceedings Article | 9 October 2021 Presentation + Paper

Carrier phase recovery in optical fiber communication systems using high-order modulation formats

Yunfan Zhang, Tianhua Xu, Jiazheng Ding, Ziyihui Wang, Tongyang Xu, Jian Zhao, Tiegen Liu

Proceedings Volume 11891, 1189103 (2021) https://doi.org/10.1117/12.2601072

KEYWORDS: Phase shift keying, Telecommunications, Modulation, Digital signal processing, Optical communications, Signal to noise ratio, Algorithm development, Fiber optic communications, Signal detection, Interference (communication)

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Proceedings Article | 9 October 2021 Presentation + Paper

Influence of equalization enhanced phase noise on digital nonlinearity compensation in Nyquist-spaced superchannel transmission systems

Jiazheng Ding, Tianhua Xu, Yunfan Zhang, Zheng Liu, Cenqin Jin, Jian Zhao, Tiegen Liu

Proceedings Volume 11891, 1189107 (2021) https://doi.org/10.1117/12.2600923

KEYWORDS: Signal to noise ratio, Telecommunications, Digital signal processing, Optical fibers, Distortion, Optical communications, Optical amplifiers, Transmittance, Modulation, Fiber lasers

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Proceedings Article | 9 October 2021 Presentation + Paper

Accuracy of EGN model in ultra-wideband optical fiber communication systems

Zheng Liu, Tianhua Xu, Jianzheng Ding, Yunfan Zhang, Mupeng Li, Tongyang Xu, Tiegen Liu

Proceedings Volume 11891, 1189106 (2021) https://doi.org/10.1117/12.2601076

KEYWORDS: Signal to noise ratio, Systems modeling, Telecommunications, Terahertz radiation, Fiber optic communications, Optical amplifiers, Wavelength division multiplexing, Signal processing, Optical simulations, Performance modeling

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Proceedings Article | 18 March 2021 Paper

Design of an on-chip mid-infrared erbium-doped laser

Rongxiang Guo, Qun Han, Zhenzhou Cheng, Tiegen Liu

Proceedings Volume 11780, 1178005 (2021) https://doi.org/10.1117/12.2588717

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Proceedings Article | 10 October 2020 Poster

Polarimetric imaging via deep learning

Haofeng Hu, Xiaobo Li, Tiegen Liu

Proceedings Volume 11549, 115491T (2020) https://doi.org/10.1117/12.2576856

KEYWORDS: Polarimetry, Polarization, Image restoration, Neural networks, Image quality, Image denoising

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Proceedings Article | 10 October 2020 Presentation

Design of a graphene-based multi-mode BPSK modulator

Gongcheng Yue, Weicheng Chen, Haofeng Hu, Guo-Wei Lu, Zhenzhou Cheng, Tiegen Liu

Proceedings Volume 11547, 115470R (2020) https://doi.org/10.1117/12.2570737

KEYWORDS: Modulators, Waveguides, Electrooptic modulators, Electro optics, Graphene, Multiplexing, Optical communications, Modulation, Silicon, Waveguide modes

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Proceedings Article | 10 October 2020 Presentation

Dual-mode GVD tailoring in a convex germanium waveguide

Weicheng Chen, Yimou Luo, Haofeng Hu, Zhenzhou Cheng, Tiegen Liu

Proceedings Volume 11547, 115470E (2020) https://doi.org/10.1117/12.2572832

KEYWORDS: Dispersion, Germanium, Waveguides, Nonlinear optics, Mid-IR, Photonic integrated circuits, Transparency, Refractive index, Multiplexing, Optical interconnects

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Proceedings Article | 10 October 2020 Presentation + Paper

Digital back-propagation in optical fiber communication systems considering equalization enhanced phase noise

Jiazheng Ding, Tianhua Xu, Ziyihui Wang, Jian Zhao, Tiegen Liu

Proceedings Volume 11545, 115450A (2020) https://doi.org/10.1117/12.2575125

KEYWORDS: Telecommunications, Data communications, Fiber optic communications, Phase shift keying, Modulation, Optical communications, Digital signal processing, Dispersion, Fiber lasers, Optical fibers

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Proceedings Article | 10 October 2020 Presentation + Paper

Low detection limit refractive index sensor based on open microcavity Mach-Zehnder interferometer and fiber ring laser

Panpan Niu, Junfeng Jiang, Kun Liu, Shuang Wang, Zhe Ma, Yongning Zhang, Wenjie Chen, Tong Wang, Tiegen Liu

Proceedings Volume 11554, 115540D (2020) https://doi.org/10.1117/12.2575029

KEYWORDS: Fiber lasers, Optical microcavities, Sensors, Mach-Zehnder interferometers, Refractive index, Optical fibers, Single mode fibers, Manufacturing, Multimode fibers, Liquids

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Proceedings Article | 10 October 2020 Presentation + Paper

Pendulum-style adjustment of captured particles with fiber tweezers based on asymmetrical fiber tip for CARS system

Tong Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Yongning Zhang, Panpan Niu, Tiegen Liu

Proceedings Volume 11554, 1155407 (2020) https://doi.org/10.1117/12.2575064

KEYWORDS: Optical fibers, Microscopes, Biological detection systems

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Proceedings Article | 10 October 2020 Presentation + Paper

Electrostatic-responsive microdroplet lasers for ultrasensitive molecular detection

Ziyihui Wang, Yifan Zhang, Tianhua Xu, Zhiyi Yuan, Jiazheng Ding, Yu-Cheng Chen, Tiegen Liu

Proceedings Volume 11554, 1155406 (2020) https://doi.org/10.1117/12.2574262

KEYWORDS: Liquid crystals, Molecular lasers, Biomedical optics, Optical resonators, Sensors, Optical microscopes, Microsensors, Biosensing, Molecular interactions

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