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Evaluation of image based integrated measurement system and its application to topographic survey
Photogrammetry Calibration Digital Camera Laser Integration Non-contact
2015/8/25
A convenient 3D measurement using amateur digital camera is enormously expected in various fields with appearance of the low cost and high-resolution amateur digital cameras. In these circumstances, t...
First Demonstration of a Broadband 37-cell Hollow Core Photonic Bandgap Fiber and Its Application to High Capacity Mode Division Multiplexing
a Broadband 37-cell Hollow Core Photonic Bandgap Fiber Application to High Capacity Mode Division Multiplexing
2014/11/6
We report fabrication of the first low-loss, broadband 37-cell photonic bandgap fiber.Exploiting absence of surface modes and low cross-talk in the fiber we demonstrate mode division multiplexing over...
Eccentricity in Images of Circular and Spherical Targets and its Impact to 3D Object Reconstruction
Spherical target circular target sphere eccentricity spatial intersection simulation
2014/7/30
This paper discusses a feature of projective geometry which causes eccentricity in the image measurement of circular and spherical targets. While it is commonly known that flat circular targets can ha...
Ultra-compact photonic crystal waveguide spatial mode converter and its connection to the optical diode effect
Integrated optics devices Guided waves
2015/8/7
We design an extremely compact photonic crystal waveguide spatial mode converter which converts the fundamental even mode to the higher order odd mode with nearly 100% efficiency. We adapt a pre...
Determination of Sulfadiazine Based on Its Derivatization with Fluorescamine by Self-Ordered Ring Fluorescence Microscopic Imaging Technique
SOR Sulfadiazine Fluorescamine Derivatization
2012/8/31
A self-ordered ring (SOR) fluorescence microscopic imaging technique has been developed for the determination of trace amounts of sulfadiazine based on its derivatization with fluorescamine. In the pr...
Semiconductor Optical Amplifier (SOA)-Fiber Ring Laser and Its Application to Stress Sensing
Fiber Laser Fiber Sensor Ring Laser Semiconductor Optical Amplifier Optical Sensor
2013/1/30
We have developed a novel optical fiber ring laser using a semiconductor optical amplifier (SOA) as the gain medium, and taking advantage of polarization anisotropy of its gain. The frequency differen...
The Secondary Structure of Heated Whey Protein and Its Hydrolysates Antigenicity
FTIR CD Whey protein Heat Treatment Antigenicity
2012/4/13
Fourier transform infrared spectroscopy (FTIR) and circular dichroism (CD) were used to investigate the conformational changes of heated whey protein (WP) and the corresponding changes in the hydrolys...
Computer Generated Quadratic and Higher Order Apertures and Its Application on Numerical Speckle Images
Higher Order Modulated Apertures Speckle Imaging Resolution Point Spread Function
2013/1/30
A computer generated quadratic and higher order apertures are constructed and the corresponding numerical speckle images are obtained. Secondly, the numerical images of the autocorrelation intensity o...
How Fast a Hydrogen Atom can Move Before Its Proton and Electron Fly Apart?
Redshift Blue Shift Speed Threshold Hydrogen Ionized
2013/1/30
In this paper we discussed the behavior of a hydrogen atom in moving and found there is a speed threshold for hydrogen atom. As long as the speed of hydrogen reaches or beyond its speed threshold, the...
Photonic Synthesis of Triangular-Shaped Pulses and Its Tunability Utilizing Frequency to Time Mapping
Triangular-Shaped Pulses Utilizing Frequency Photonic Synthesis
2015/5/15
A synthesis scheme to generate microwave triangular-shaped pulses based on spectral shaping and frequency-to-time mapping is proposed. Triangular-shaped signals with periods of 0.2ns, 0.4ns, 1.6ns and...
A “Linear” High-Contrast Gratings Hollow-Core Waveguide and its System Level Performance
Gratings Nonlinear Systems Waveguides
2015/6/9
The high-contrast gratings assisted hollow-core waveguide demonstrates an ultra-low nonlinearity (<6×10 -13 /W/m). Digital and analog system-level simulations further show that the waveguide does not...
Phase to Intensity Modulation Conversion by Third-Order Dispersion and Its Effect on Group Velocity Dispersion Measurement Using Phase-Modulated CW Light
Dispersion Phase modulation
2015/6/9
We show that phase to intensity modulation conversion induced by third-order dispersion doubles the modulation frequency, and therefore, the third-order dispersion does not affect group velocity dispe...
100Gbps EO Polymer Modulator Product and Its Characterization using a Real-Time Digitizer
Modulators Fiber-Optics Components
2015/6/9
First commercial 100Gbps EO polymer modulator and its use in time-stretch A/D converter to monitor the high frequency performance of the modulator and achieving 100GHz A/D conversion is shown.
PLC-based eight-channel OFDM demultiplexer and its demonstration with 160 Gbit/s signal reception
Integrated optics devices Optical communications
2015/6/8
An integrated-optic demultiplexer for 8 x 10 Gbaud OFDM sub-carrier channels is realized, which comprises a PLC-based 8 x 8 optical FFT circuit. It is successfully used to demultiplex a 160 Gbit/s OFD...
Humidity-Induced Spectral Shift in a Cross-Dispersion Echelle Spectrometer and Its Theoretical Investigation
Emission spectrometry Position shift of a spectral line Spectral-shift equation
2011/4/28
The relationship between ambient relative humidity H and the position shift of a spectral line was investigated both experimentally and theoretically. An echelle-based ICP emission spectrometer equip...