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条纹中心线法是一种重要的电子散斑干涉条纹解调方法,其前提条件是获得高准确度的条纹中心线.本文在分析载波电子散斑干涉条纹自身特征的基础上,提出了一种基于载波条纹调制方向提取条纹中心线的方法.该方法首先通过同态滤波有效滤除高频乘性散斑噪音,提取出载波条纹;然后应用基于调制方向提取中心线算法确定载波条纹灰度极值点并做二值化处理;再采用基于中心线拟合或者基于条纹间距的边沿中心线补偿法,获得完整的条纹中心线...
Teflon AF液芯波导的应用研究进展
仪器分析 光谱分析 Teflon AF液芯波导
2011/11/1
由于Teflon AF具有气体渗透性结构、疏水性、化学惰性、比水低的折射率等特点，因此Teflon AF液芯波导在吸收、荧光、拉曼光谱分析、气体传感器等诸多领域得到了广泛的应用。本文将剖析Teflon AF液芯波导的特性，分析Teflon AF液芯波导的应用研究进展，展望Teflon AF液芯波导的应用研究前景。
Spectral Target-Detecting System Using Sine-Wave Modulation
Sine-wave modulation Analog Target detection Optical spectrum
2011/10/1
Target detection is one of the key technology of precision chemical application. Previously the digital coding modulation technique was commonly used to emit and receive the optical signal in the targ...
Design of subwavelength superscattering nanospheres
subwavelength superscattering nanospheres
2011/8/10
We design a subwavelength superscattering nanosphere with plasmonic-dielectric-plasmonic layer structure. We show that the scattering cross section of such a particle can be significantly enhanc...
Experimental demonstration of two methods for controlling the group delay in a system with photonic-crystal resonators coupled to a waveguide
two methods controlling group delay system photonic-crystal resonators coupled waveguide
2011/8/10
We measure the group delay in an on-chip photonic-crystal device with two resonators side coupled to a waveguide.We demonstrate that such a group delay can be controlled by tuning either the propagati...
Transverse Electromagnetic Modes in Aperture Waveguides Containing a Metamaterial with Extreme Anisotropy
Transverse Electromagnetic Modes Aperture Waveguides Containing Metamaterial Extreme Anisotropy
2011/8/10
We use metamaterials with extreme anisotropy to solve the fundamental problem of light transport in deep subwavelength apertures. By filling a simply connected aperture with an anisotropic mediu...
Numerically exact calculation of electromagnetic heat transfer between a dielectric sphere and plate
Numerically exact calculation electromagnetic heat transfer between dielectric sphere plate
2011/8/10
We present a numerically exact calculation of electromagnetic heat transfer between a dielectric sphere and plate. We compare the calculation to a recent experiment. Our calculations unify various app...
Monolithically Integrated Compact VMUX/DEMUX on Silicon-on-Insulator Platform
Wavelength filtering devices Integrated optics devices Photonic integrated circuits
2011/5/26
We demonstrate a compact 40-channel, dense wavelength division multiplexing (DWDM)VMUX/DEMUX by monolithic integration of an echelle grating and high-speed p-i-n VOA on the silicon-on-insulator (SOI) ...
Hybrid Integration of Semiconductor Optical Amplifier and Silica-based Planar Lightwave Circuit for Low Polarization Dependent Gain
Integrated optics devices Waveguides planar
2011/5/26
We demonstrated a semiconductor optical amplifier hybrid-integrated with a silica-based planar lightwave circuits. With deploying polarization diversity circuit, polarization dependent gain was reduce...
Multilevel Optical Modulator with PLC and LiNbO 3 Hybrid Integrated Circuit
Electro-optical devices Waveguide modulators
2011/5/26
Optical modulators with a hybrid configuration of silica-PLCs and LiNbO 3 phase modulators are promising for advanced multilevel modulation formats. Modulators for OFDM-QPSK, 64QAM, and a selectable f...
Fabrication and Demonstration of a Pure Silica-Core Waveguide Utilizing a Density-Based Index Contrast
Glass waveguides Thin-Films Other Properties
2011/5/26
We report a novel approach for creating a dopant-free pure silica-core waveguide(PSCW) for chip-scale waveguides with the goal of reaching fiber-like losses on-chip.Stoichiometric silica films were us...
25GHz Hybrid Silicon Mach-Zehnder Modulator using High-Speed Push-Pull Slotline Design
General Modulators
2011/5/26
We demonstrate a hybrid silicon Mach-Zehnder modulator having a voltage-length product of 2.4 V-mm and chirp parameter of -0.75. This modulator also has a modulation bandwidth of 25 GHz.
Realistic Approaches to Scaling the IP Network using Optics
Networks Networks wavelength routing
2011/5/26
We compare the relative cost and complexity of network architectures that reduce the cost of the IP layer over DWDM. We conclude that a combination of IPoDWDM and flexible spectrum provide the most pr...
A Prototype of Signal Degradation Monitor Based on Wavelength Resolved Stokes Vector Analysis Featuring a Function of Identification of the Cause of Degradation
Optical communications Networks
2011/5/26
We resolved signal degradations due to DGD and OSNR from a single monitor source.We verified a precision of +/-0.2dB of Q-value experimentally with a monitor prototype and 160Gb/s signal.
Fourier-Transform, Integrated-Optic Spatial-Heterodyne Spectrometer with 1 GHz Resolution on a Silica-Based Planar Waveguide
Waveguides planar Spectroscopy Fourier transforms Integrated optics devices
2011/5/26
We present fabrication details and measurements of a high-resolution planar-waveguide spatial heterodyne spectrometer incorporating 64 asymmetric Mach-Zehnder interferometers.Measurements verify 1 GHz...