Optoelectronic Devices and Integration (OEDI)

s Wednesday June 17 2015 East Lake Hall 08:00 -12:30 JW1A • Opening Ceremony and Plenary Presider: Jesper Moerk,; Technical University of Denmark (DTU), Denmark Xinliang Zhang; Wuhan National Lab for Optoelectronics, China JW1A.1 • 08:15 Plenary Submission Bioimagers – Life at the Intersection of Engineering and Sciences, M. J. Deen; Dept. of Electrical and Computer Eng., McMaster University, Canada. Following the credo that “seeing is believing” and “a picture is worth a thousand words”, low-cost imaging technologies are now ubiquitously deployed in consumer devices – from digital cameras, to laptops and cell phones. Another area where imaging technology is having a significant impact is in the development of high-sensitivity, high-speed bioimagers for applications in medicine, biology, biomolecular sciences and chemistry. In this keynote presentation, we will discuss our on-going research work in developing low-cost, miniaturized and sensitive systems towards minimally invasive screening and diagnoses for early stage malignancies. This research is motivated by the premise that the sooner a disease is caught, the higher the chances are for recovery. At present, one of our foci is on minimally invasive endoscopic/brain imaging technologies that require expertise in multiple disciplines such as gastroenterology and neurology, minimally invasive surgery, medical instrument development, photonic, electronic and mechanical engineering, and image processing. More importantly, such a project requires real convergence among engineers, scientists and clinicians who must work collaboratively and synergistically for the realization of these new screening and diagnostic devices. As a specific example, not only do we have to develop optical imagers capable of single photon counting with high temporal resolution to investigate autofluorescence from biological samples, but the optics should be integrated so the system has a small form factor. And for in-vivo applications, biocompatible coatings with good optical transmission properties are required. In addition, the hardware and software should be user friendly to clinicians. In the talk, we will also highlight the importance of computing as well as data and image processing, some often overlooked areas in bioimaging systems. Finally, we will summarize our current work and recent accomplishments to illustrate not only convergence in general, but specifically convergence to tackle one of the most pressing issues in healthcare worldwide – that of low-cost screening towards early diagnosis of common diseases for better prognosis. JW1A.2 • 09:00 Plenary Submission Perovskite Solar Cell: Present and Future, Nam-Gyu Park; Sungkyunkwan University, Korea (the Republic of). In the POEM 2015 conference, current status and future perspective of perovskite solar cell will be presented and discussed, as well as progresses in our laboratory. In addition, device stability and chemical safety will be also discussed. JW1A.3 • 10:15 Plenary Submission Manipulating Excited States in Organic Semiconductors: From Molecular Design to Assembly, Wei Huang; Nanjing Tech University , China. Abstract Not Available JW1A.4 • 11:00 Plenary Submission Consequences of Dirac-like Cone Dispersions in Optics, Che Ting Chan; Physics Dept., Hong Kong Univ of Science & Technology, Hong Kong. We show that photonic crystals with accidental-degeneracy-induced conical dispersions at k=0 derived from monopole and dipole excitations can serve as a “classical system” with zero-refractive-index and a “quantum system” with pseudo-spin 1. JW1A.5 • 11:45 Plenary Submission Architecture, Process, and Materials for Efficient Perovskite Solar Cells, Sang Il Seok; Korea Research Inst of Chemical Tech, Korea (the Republic of); Department of Energy Science, Sungkyunkwan University, Korea (the Democratic People's Republic of). In this presentation, I will talk about several approaches for fabricating efficient perovskite solar cells. A process and chemical engineering with tuned-architectures induced the formation of well-crystallized perovskite materials with the extremely uniform and dense perovskite layers, and remarkably improved the performance of the cells. Poster Room 16:00 -18:00 JW3A • Poster Session JW3A.33 • 16:00 Contributed Submission Tunable photoluminescence of Si-rich nitride films with silicon quantum dots by changing the total pressure, Wugang Liao, Xiangbin Zeng, Xixing Wen, Yangyang Wen; School of Optical and Electronic Information, Huazhong University of Science and Techn, China. Silicon-rich nitride films were prepared by PECVD at low temperature. TEM, Raman and photoluminescence (PL) spectra were characterized to identify the PL mechanisms and the role of total pressure on the distribution of Si QDs. JW3A.34 • 16:00 Contributed Submission Strain-Sensitivity Based on Notch-Induced Phase-Shifted Long-Period Fiber Gratings, Xiaojun Zhu, Guoan Zhang, Youhua Zhu, Xiaomei Xu; Nantong University, China. A strain-sensitivity band-pass filter based on phase-shifted long-period fiber gratings (PS-LPFGs) with notch-induced technology was reported. The resonant wavelength of PS-LPFG could be tuned by 10 nm when the external strains applied. JW3A.35 • 16:00 Contributed Submission Performance of a novel receiver in MIMO Visible Light Communication, Lang Kai; Tsinghua University, China. A MIMO Visible Light Communication Receiver using 3 photodiodes whose photo-surfaces are perpendicular to each other was presented. This scheme can enhance sub channel diversity without bulky, expensive, fragile imaging equipment. JW3A.36 • 16:00 Contributed Submission An enhancement algorithm based on gaussian distribution for infrared image and its realization with FPGA, Xiaodan Gao ; Wuhan Donghu University, China. An adaptive enhancement algorithm based on gaussian distribution for infrared image was presented. some algorithm optimization was analysed and realized based on FPGA. The experiment results showed that the algorithm had real-time enhancement effect. JW3A.37 • 16:00 Contributed Submission Graphene-based dual-band tunable metamaterial absorber in the infrared region, Zongzhe Li, Gang Yao, Furi Ling, Jianquan Yao; Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China; College of Precision Instrument and Optoelectronics Engineering, Tianjin University, China; School of Optical and Electronic Information, Huazhong University of Science and Technology, China. In this paper, we theoretically demonstrate an infrared metamaterial absorber consisted of metal-graphene-dielectric-metal structure. Simulation results show that dual-band absorber not only can tune simultaneously, but also keep above 90% absorption.The proposed absorber may be valuable in tunable infrared thermal devices. JW3A.38 • 16:00 Contributed Submission Dynamically tunable terahertz cross polarization amplitude based on graphene metamaterial, Gang Yao, Furi Ling, Jin Yue, Yunkun Rao, chunya luo, Jianquan Yao; Huazhong University of Sci. and Tech., China; College of Precision Instrument and Optoelectronics Engineering, Tianjin University, China. We theoretically demonstrated broadband,highly efficient metamaterial-based terahertz polarization converters that the perpendicular polarization amplitude can be dynamically tuned by varying the Fermi energy without reoptimizing and refabricating the nanostructures. JW3A.39 • 16:00 Contributed Submission High sensitivity optical sensor for H2S detection utilizing hollow-core photonic bandgap fiber, dai bing, Jingsong Liu; 1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. An optical fiber gas sensor using hollow-core photonic bandgap fiber (HC-PBF)as a gas cell is proposed to detect H2S mixed with natural gas. This sensor is advantages for eliminating instability of light source, impact of thermal zero drift, and zero shift of photoelectric device. JW3A.40 • 16:00 Contributed Submission Plasmon-Modulated Polarized Upconversion Emissions from Single Gold Nanorod-Nanophosphors Hybrid Nanostructures, Jijun He, Wei Zheng, Xueyuan Chen, Dangyuan Lei; Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong; Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, China; Shenzhen Research Institute, The Hong Kong Polytechnic University, China. We demonstrate plasmon-modulated polarized upconversion emissions from single gold nanorod@SiO2@CaF2:Yb,Er hybrid core-shell nanostructures. By varying the SiO2 spacer thickness, the polarization state and photoluminescence intensity of green and red emissions can be flexibly tuned. JW3A.41 • 16:00 Contributed Submission Super resolution THz image from a single image, Qin Luo, Yunkun Rao, Furi Ling, Peng Gao, Renkui Li, Jianquan Yao; Huazhong University of Science and Technology, China; Tianjin University, China. We introduce a method to recover the super-resolution THz image from a single low resolution image. The method combines the multi-image super resolution and example-based super resolution methods to achieve a super resolution image from one or more low resolution THz images. JW3A.42 • 16:00 Contributed Submission The influence of work function of transparent conductive oxide on a-Si/c-Si heterojunction solar cells with different doping types of wafers, Xixing Wen, Xiangbin Zeng, Wugang Liao, Yangyang Wen; Huazhong University of Science and Technology, China. The influence of work function of transparent conductive oxide (TCO) on Fermi energy level, energy band and efficiency of different type solar cells was investigated to explore the needs of work function of TCO. JW3A.43 • 16:00 Contributed Submission Fano resonance with high sensitivity in a symmetric structure, Xin-guang Hu , Jinsong Xia; Wuhan National Laboratory for Optoelectronics, China; School of Information Engineening, HuangShan University, China. A symmetric plasmonic nanostructure is designed to produce Fano resonances. Results show that a high-refractive-index sensitivity can be achieved, which make the designed configuration a good platform for applications in fields of biochemical sensing. JW3A.44 • 16:00 Contributed Submission High confinement factor ridge slot waveguide for optical sensing, Zengzhi Huang, zhang yong, Cheng Zeng, Danping Li, Yi Wang, Jinzhong Yu, Jinsong Xia; Wuhan National Lab for Optoelectronics, China; State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy ofSciences, China; School of Optical and Electronic Information, Huazhong University of Science andTechnology, , China. A ridge slot waveguide on silicon-on-insulator is theoretically investigated. The confinement factor of the ridge slot waveguide is much higher than the conventional slot waveguide in the case of air-cladding. The sensitivity of sensors based on ridge slot waveguides is higher than that of a conventional slot waveguides. JW3A.45 • 16:00 Contributed Submission Effect of temperature and wavelength on photoacoustic signal, Yanfang Cao, Yongjia Xiang, Yang Jiao, Zhile Han, Xiaohua Jian, Yaoyao Cui; Suzhou Inst of Biomedical Eng & Tech, China. In this paper, the effect of temperature and wavelength on photoacoustic signals was qualitatively studied. JW3A.46 • 16:00 Contributed Submission Study on Frequency Selective Surface Bandstop Filter in the terahertz frequency, Chunya luo, Furi Ling, Jin Yue, Yunkun Rao, Jie Ji, Renkui Li, Gang Yao, Jianquan Yao; Huazhong University of Sci. and Tech., China; College of Precision Instrument and Optoelectronics Engineering, Tianjin University, China. Frequency Selective Surface Band stop Filter in THz frequency is presented. The center frequency of the filter is 0.103 THz, it's stopband transmission rate reaches to 99.37% and bandwidth of 3 dB reaches to 105 GHz. JW3A.47 • 16:00 Contributed Submission Strain status in Feand Sidoped GaN epilayers grown on sapphire, Changcheng Zheng, Jiqiang Ning, Jianfeng Wang, Ke Xu, Shijie Xu; Xi'an Jiaotong-Liverpool University, China; The University of Hong Kong, Hong Kong; Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, China. The effect of Fe doping on a series of Fe-doped GaN epilayers with difference doping concentrations were studied by Raman spectroscopy with comparison to Si-doped GaN samples. Compressive strain in Fe-dope GaN tends to relax. JW3A.48 • 16:00 Contributed Submission Fabrication of the porous silicon though a self-assembled porous alumina template, Zeping Li, Zhimou Xu, Zhichao Ma, Xinghui Wu; Huazhong University of Science and Technology, China; School of Electronic Information and Engineering, Hubei University of Science and Technology, China. We present the fabrication of porous silicon through a self-assembled porous alumina template(PAT) directly grown on the Si substrate. SEM and UV-vis spectrometer were used to characterize the morphology, size distribution and the reflectivity performance. JW3A.49 • 16:00 Contributed Submission Tunable asymmetric transmission of Thz wave through a graphene planar chiral structure, Junyang Zhao; National University of Defense Technology, China. We show that asymmetric transmission of circularly polarized waves through a graphene planar chiral structure can be observed in Terahertz range. And the relative enantiomeric difference in the total transmission is tunable with the change of graphene’s Fermi level. JW3A.50 • 16:00 Contributed Submission Compact temperature sensor by using a specialty fiber of Germania core and silica cladding, Xinyong Dong, Jingyi Yang, Yangzi Zheng, Perry Ping Shum, Haibin Su; School of Materials Science and Engineering, Nanyang Technological University, Singapore; CINTRA, Research Techno Plaza, Nanyang Technological University, Singapore; China Jiliang University, China; School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. A miniature temperature sensor with sensitivity of 87.8 pm/oC is demonstrated by using a Michelson interferometer formed with a 0.7-mm specialty optical fiber with Germania core and silica cladding spliced to a single mode fiber. JW3A.51 • 16:00 Contributed Submission Three-dimensional Reconstruction Technology based on Terahertz Coherent Tomographic Imaging, Yunkun rao, Qin luo, Furi Ling, Peng Gao, Renkui Li, Jianquan Yao; Huazhong University of Sci. and Technology., China; College of Precision Instrument and Optoelectronics Engineering, Tianjin University, China. A novel three-dimensional coherent tomographic imaging system using low-coherence terahertz (THz) sources is presented in this paper. The result shows that the longitudinal resolution of three-dimensional coherent tomographic imaging is about 100μm. JW3A.52 • 16:00 Contributed Submission Fano Resonance and Spaser of Nanostructure Consisting of a Rod and Concentric Square Ring-Disk, Tianqing Jia; East China Normal University, China. This paper reports a spaser with a high Purcell factor and a low threshold based on the amplification of dark quadrupolar mode at Fano resonance of a plasmonic nanostructure. JW3A.53 • 16:00 Contributed Submission Dielectric Loaded Graphene Plasmon Waveguide and Electrically Controllable Directional Coupler, wei xu; National University of Defense Technology, China. Dielectric loaded graphene plasmon waveguide is proposed to overcome the edge shape effect of graphene nanoribbon waveguide. Based on the proposed waveguide, electrically controllable optical switch and 3-dB splitter is designed. JW3A.54 • 16:00 Contributed Submission Measuring the UV-Vis Micro-fluorescence Spectra and Chromaticities Analysis of Single Oil-gas Inclusions, Ailing Yang; Ocean University of China, China; Institute of Unconventional Hydrocarbons & New Energy Sources, China University of Petroleum, China. A low cost measurement system for measuring the UV-Vis micro-spectra of single oil-gas inclusions (OGIs) was established. The main aromatic hydrocarbons can be qualitantively extimated and the color coordinates can be calculated by the spectra. JW3A.55 • 16:00 Contributed Submission Impact of EDF's Location and Length on Ultra-Long-Span Optical Transmission System, Huang Xiong, Guodong Chen, Ruiwen Zhang, Yuanyuan Shan, Junqiang Sun; Huazhong University of Science & Tech., China. The paper has analyzed the impact of EDF’s location and length on the ultra-long-span optical transmission system. According to the experiment results, it is shown that an optimal location and length of EDF can always be existed in different systems, which will make signal error rate and gain value achieve the minimum and maximum value, respectively. JW3A.56 • 16:00 Contributed Submission Influence of Longitudinal Spatial Hole Burning in DFB Laser on Adiabatic Chirp, Junqiu Qi, Yanping Xi, Xun Li; Wuhan National Lab for Optoelectronics, China. Effect of the LSHB in DFB laser on adiabatic chirp has been investigated. It is observed that the adiabatic chirp is overestimated in rate equations model, and inversely proportional to the flatness of optical field. JW3A.57 • 16:00 Contributed Submission Significantly Enhanced Robustness and Electrochemical Performance of Flexible Carbon nanotube-based Supercapacitors by Electrodepositing Polypyrrole, Yanli Chen; Jinan university, China. We report robust, flexible CNT-based SC electrodes fabricated by electrodepositing polypyrrole on freestanding CNT film. These electrodes demonstrate outstanding mechanical properties and electrochemical performance. SCs assembled with the robust CNT/PPy electrodes exhibit excellent flexibility, long lifetime and high electrochemical performance. JW3A.58 • 16:00 Contributed Submission Investigation of Electric Field Induced Terahertz Modulation Effects in Graphene Nanoribbons, Jin Yue, Furi Ling, Gang Yao, Chunya Luo, Jianquan Yao; Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China; School of Optical and Electronic Information, Huazhong University of Science and Technology , China. We describe very fast electron dynamics for a graphene nanoribbon (GNR) driven by a control electric field in the terahertz frequency regime.The electron mobility of the GNR can be calculated through the nonlinear Boltzmann transport equation by numerical simulation.The results indicate the terahertz modulation depth of graphene nanoribbon is 2.6%. JW3A.59 • 16:00 Contributed Submission Ultra-broadband low dispersion over mid-infrared regime in silicon-on-nitride waveguide, Lijuan Xu, Xiaochang Ni, Bowen Liu, Ming-lie Hu; School of Electronic Engineering, Tianjin University of Technology and Education, China; College of Precision Instrument & Opto-electronics Engineering, Tianjin University, China. The designed silicon-on-nitride waveguide illustrates an ultra-broadband (~4012 nm), and low chromatic dispersion (from -29 to +37 ps/nm/km) in mid-infrared wavelength region. JW3A.60 • 16:00 Contributed Submission The filtering enhancement effect of a Bragg grating written in unpumped EDF used in single-longitudinal-mode BEFL, Ya Gao; Wuhan National Lab for Optoelectronics, China. A Brillouin/Erbium fiber laser with a narrow linewidth is experimentally demonstrated. A segment of unpumped erbium-doped fiber with a Bragg grating written at the end acts as an auto-tracking filter to achieve single-longitudinal-mode operation. JW3A.61 • 16:00 Contributed Submission Engineering Enhanced Photonic Hilbert Transformer based on direct Bragg grating design, Liu Bolan, Chaotan Sima, Wei yang, Deming Liu; Huazhong university of science and technology, China. An engineering enhanced photonic Hilbert transformer (PHT) is proposed and demonstrated, by compensating the fabrication nonlinearity and truncating the grating apodization profile. This technique allows the PHT with better spectral performance and compact structures. JW3A.62 • 16:00 Contributed Submission The application of confocal 3D XRF based on polycapillary X-ray lens in surface topography analysis, Longtao Yi, Zhiguo Liu, Kai Wang, Man Chen, Shiqi Peng, Kui Yang, Jinbang Wang; Beijing Normal University, USA. With an improved scanning method, the surface topographies of two samples are obtained by a confocal 3D XRF setup. Compared with our previous study, a significant improvement of efficiency has been achieved. JW3A.63 • 16:00 Contributed Submission Double electromagnetically induced transparency in a metal-dielectric-metal plasmonic waveguide system composed of cascaded resonators, Zhenzhen Liu, Jun Jun Xiao; College of Electronic and Information Engineering, Shenzhen Graduate School Harbin Institute of Technology, China. We show double electromagnetically induced transparencies arising from interference interaction between cascaded resonators coupling to the slot waveguide. We analytically describe it by the coupled mode theory and numerically verify it by the finite element method. JW3A.64 • 16:00 Contributed Submission A Novel Type of Optical Switch Matrix Using MZI, Liu Yang, Fengguang Luo, Jinghua Wang; Huazhong University of Science and Technology, China. Based on the three functions (e.g. the direct connection, cross connection and broadcast connection) of a designed MZI, a novel type of 4×4 optical switch matrix was designed and the routing controlling table was given. JW3A.65 • 16:00 Contributed Submission Luminescence Properties of GaAs Quantum Dot-in-Nanowire Structure for Quantum Photonics, Li Wang; Beijing University of Technology, China. We investigate light characters of GaAs quantum dot-in-nanowire structure by cathodoluminscence. Exciton intensity of QDs is ~5 times stronger than the nanowire. Promising properties attribute to cavity enhancement and quantum confinement by surrounding AlGaAs barriers. JW3A.66 • 16:00 Contributed Submission Experiment Study of the L-band DFB Laser in 10G Access Network, Jia Li, Jiachen Liu, Yanping Xi, Xun Li, Ying Wang, Zhiming Fu; ZTE Corporation, China; Wuhan National Laboratory for Optoelectronics, China. In this paper, we have systematically studied the 10G L-band directly modulated DFB lasers with its potential applications in the 10G access network. Both the simulation and experimental results are indicating that the DML could be a promising solution to the low cost optical source for the downstream link of 10G PON infrastructure. JW3A.67 • 16:00 Contributed Submission Silicon-based electro-optical switching based on tunable metasurface, Yali Sun, Zhiwei Li, Tongjun Liu, Yonghong Ling, Xu Han, Lirong Huang; Huazhong University of Sci. & Technology, USA; Yangzhou University, China; Jiangxi University of Science and Technology, China. A novel electro-optical switch is proposed, it utilizes anomalous reflection associated with metasurface and tuning the refractive index of Si under external electric bias. The switching behavior and the corresponding optical beam deflection are investigated. JW3A.68 • 16:00 Contributed Submission Optical limiter for DF Laser based on deep-etched fused-silica grating, Yang Junbo; Center of Material Science, National University of Defense Technology, China; State Key Laboratory on Advanced Optical Communication Systems and Networks, Peking University, China. Based on the deep-etched fused-silica grating, an optical limiter for deuterium fluoride (DF) laser is designed and optimized. The weak incident light almost propagates in the line and the strong incident light changes the propagation direction at right angle through the optical limiter. JW3A.69 • 16:00 Contributed Submission Phase-preserving amplitude noise compression of a 40Gb/s DPSK signal based on cross-gain compression in SOAs, Xinliang Zhang, Tong Cao, Liao Chen, Yu Yu; Huazhong Univ of Science and Technology, China. We experimentally demonstrate phase-preserving amplitude noise compression for a 40 Gb/s distorted differential-phase-shift keying signal using XGC. Power penalties of constructive and destructive demodulation at BER of 10 are -1.75 and -1.01 dB, respectively. JW3A.71 • 16:00 Contributed Submission Temperature sensor based on a nonadiabatic microfiber loop, Yongjiao Wang, Fengjuan Cheng, and Lei Liang, National Engineering Laboratory for Fiber Optical Sensing Technology, Wuhan University of Technology, Wuhan, China, 430070, School of computer science and Engineering, Henan University of Urban Construction, Pingdingshan, China, 467036, School of Information Science and Engineering, Henan University of Technology, Zhengzhou, China, 450001. A compact temperature sensor based on a simple nonadiabatic microfiber loop is demonstrated experimentally using nonadiabatic microfiber loop. High sensitivity within a large temperature range can be obtained utilizing a microfiber with 20mm length. JW3A.72 • 16:00 Contributed Submission Multiwavelength pulse generator based mode-locked fiber laser together with Fabry-Perot filter, Huizi Li, Perry Ping Shum*, Seongwoo Yoo, Changxiu Chen, and Songnian Fu, Center of Fiber Technology (COFT), School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore, National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Avenue, Wuhan, 430074, China. Multiwavelength pulse generators have attracted considerable attentions due to their wide applications in WDM communication systems, optical fiber sensing, optical signal processing, and optical instrumentation. A simple and compact configuration of multiwavelength pulse generator is proposed and experimentally demonstrated, using a SESAM-based passively mode-locked fiber laser together with fiber Fabry-Perot filter. By optimizing the dispersion of fiber ring cavity, we achieve a flat rectangular optical spectrum with 3dB bandwidth of 8.1nm and high degree flatness with less than 0.5dB fluctuation in a normal dispersion cavity. Inserting a fiber Fabry-Perot filter at the output of passively mode-locked fiber laser, we can simultaneously obtain 40 channels with 0.2nm wavelength spacing, under the condition of less than 3dB power uniformity. Compared with previously proposed structures, our scheme has a rather good performance on stability and each central wavelength of the multiwavelength pulse generator can stay invariable.