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Due to the rapid increase in the number of users owning location-based devices, there is a considerable amount of geo-tagged data available on social media websites, such as Twitter and Facebook. This geo-tagged data can be useful in a variety of ways to extract location-specific information, as well as to comprehend the variation of information across different geographical regions. A lot of techniques...
Nowadays, open data has become more and more popular and is widely used in a variety of service domains. However, in Taiwan, most open datasets are still separate while linked open data (LOD) is still lacking. Without LOD, application developers are difficult to locate and combine appropriate open datasets to create innovative applications. Therefore, to facilitate the consumption and the spreading...
A cost-effective and energy-efficient self-homodyne downstream scheme is proposed for WDM-PON with inserted pilot sub-samples and interferometer-based detection. A 10-Gbps self-homodyne OFDM downstream transmission is experimentally demonstrated over 20-km SSMF with error-free operations.
Visual servoing (VS) is an automatic control technique which uses the feedback of visual information to guide the robot motion to converge to the desired location. This paper proposes new moment-based features for robust VS with spheres, especially in cameras obeying the unified model. Specifically, we introduce a virtual plane to reload contours of image projections of spheres, in the process of...
A subwavelength-in-thickness three-layer (gold micro-disk/quantum well infrared photodetector (QWIP)/metal reflector, MIM) plasmonic micro-cavity structure has been developed as a coupling resonator to enhance the photo-responsivity of the QWIP. The disk cavity structure captures and confines the incident light at the resonant wavelengths due to the near-field plasmonic effect. Comparing with the...
We show the first experimental result of direct hot electron imaging by scanning the local ultra-high frequency 21 terahertz, THz) shot noise at room temperature. In nonequilibrium situations, the local fluctuation of current-carrying electrons (known as shot noise) contains fingerprint-like information of electron kinetics. We use a sharp tungsten tip as a movable, contact-free noise probe to locally...
In this work, aiming to enhance network automation and service fairness, we formulate a stackelberg game for flexible service provisioning in an IP over elastic optical network (IP-over-EON). In the proposed game, the service provider is the leader and maximizes its revenue by pricing the lightpaths in the EON layer and changing their capacities adaptively, while the incoming requests are the followers...
We design and fabricate a silicon based 1×2 optical switch based on the free-carrier plasma dispersion effect, with a Mach-Zehnder interferometer structure on silicon-on-insulator (SOI) wafer. The experimental result shows that it has an extinction ratio of 21.8 dB at 1546 nm, which meets the requirements of the most applications in optical telecommunication networks.
In this work, aiming to enhance network automation and service fairness, we formulate a stackelberg game for flexible service provisioning in an IP over elastic optical network (IP-over-EON). In the proposed game, the service provider is the leader and maximizes its revenue by pricing the lightpaths in the EON layer and changing their capacities adaptively, while the incoming requests are the followers...
Detrimental nanoscale gas bubble defects seriously hinder the practical applications of nanoimprint lithography in manufacturing of nanoelectronic devices. Here, we present a nanofluidics study on the formation and evolution mechanisms of nanoscale bubble defects in dispensing-based UV-curable nanoimprint lithography processes. Our work indicates that the formation of nanoscale bubble defects is mainly...
Palm vein recognition is a new biometric identification technology. The horizontal rotation, translation, tilting and loss of local vein information of palm vein image greatly affect recognition rate. To solve the above problems, this paper respectively extract four kinds of local invariant feature, Scale Invariant Feature Transform(SIFT), Affine-SIFT(ASIFT), Harris-Laplace and Maximally Stable Extremal...
We investigate the problem of data-intensive vNF service chain (vNF-SC) orchestration in inter-datacenter EONs. After analyzing the NP-hardness of this problem, we solve it in a sequential manner by optimizing both the request serving sequence and the data-intensive vNF-SC orchestration. Specifically, we propose a request sorting algorithm and a data-intensive vNF-SC orchestration algorithm based...
For efficiently transferring radio-frequency (RF) signals to remote places using Radio-over-Fiber (RoF) techniques, it is important to increase optical power of RoF signals launched to optical fiber links. Fiber nonlinearity is going to be a critical obstacle against such high-power operation. To cope with this problem, we have proposed a transfer system of digitally data-modulated RF signals over...
Time resolved optical experiments, as useful tools, give scientists a chance to research the dynamic processes ‘frame by frame’ of a series of ultrafast phenomena, including high resolution terahertz spectroscopy [1], transient absorption spectroscopy [2] and so on. In the beginning, ‘Mechanical Delay Line’ is employed to scan the time differences between the pump and the signal, but this method is...
Audio forgery is a critical part of digital forgery. There is a large variety of audio forgery forms, and copy-move is one of the most common but effective one. Merely one word's copy-move can turn the whole sentence into distinct meaning. So the way to detect this form of forgery precisely and effectively is especially useful and significant in the field of digital forensics. In this paper, we propose...
We demonstrate demultiplexing of ultrafast optical time-division multiplexed (OTDM) signals by parallel time-frequency domain sampling. With a loop-assisted coherent matched detector configuration, all subchannels of 4×20-Gb/s Gaussian-/Nyquist-shaped OTDM-QPSK signals were simultaneously demultiplexed and detected.
We propose all-optical signal upconversion scheme using optically-injected DFB in combine with embedded optoelectronics oscillator for RoF application. The low-noise LO provided by OEO and near-SSB modulation implemented by injection locking enables high-performance in transmission.
We study how to address the IP router outages in an IP-over-EON with multi-layer restoration (MLR), and propose an auxiliary-graph (AG) based scheme that can minimize the additional OPEX of MLR with the help of the spectrum expansion capability of sliceable bandwidth-variable transponders (SBV-Ts).
For implanted neural-sensing devices, one of the remaining challenges is to transmit stable power/data (P/D) transmission for high spatiotemporal resolution neural data. This paper presents a miniaturized implantable 128-channel wireless neural-sensing microsystem using TSV-embedded dissolvable μ-needle array, a flexible interposer and 4 dies by 2.5D/3D TSV heterogeneous SiP technology. The 4 dies...
NFinFET devices with channel length 100nm and 120nm fabricated on SOI (silicon on insulator) wafers are measured to show ID-VG and ID-VD characteristic curves. ID-VG characteristic curves demonstrate suppressed Ioff's associated with Drain Induced Barrier Lowering (DIBL) and Punch-through effects. ID-VD characteristic curves are then roughly fitted by using the traditional current-voltage formula...
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