搜索结果: 1-9 共查到“知识库 光学工程 PD”相关记录9条 . 查询时间(0.062 秒)
提出了采用Jiles-Atherton磁滞模型理论和动态递归神经网络(DRNN)前馈-PD反馈控制策略来提高超磁致伸缩驱动精密定位平台的定位精度。通过Jiles-Atherton磁滞模型建立了能准确描述其磁滞非线性的数学模型;采用DRNN学习获得其逆动态模型并用于磁滞非线性补偿;利用PD闭环反馈控制补偿DRNN的映射误差和抑制扰动,从而提高超磁致伸缩驱动精密定位平台的定位精度。研究结果表明:Jil...
High-Precision In-situ Wavelength Stabilization and Monitoring of Tunable Lasers Using AWG and PD Arrays
In-situ Wavelength Stabilization Tunable Lasers AWG PD Array
2015/5/15
This paper presents a rapid laser wavelength stabilization and monitoring technique based on a feedback loop using AWG with PD arrays at 0.5 MHz. The experiment demonstrates control accuracy of ±0.015...
基于WO3- Pd复合膜的D型光纤光栅氢气传感器
D型光纤光栅 磁控溅射 WO3- Pd复合膜 氢气传感器
2011/12/19
采用磁控溅射方法在侧边抛磨的光纤光栅（D型光纤光栅）上溅射40 nm WO3-Pd复合薄膜,制作了D型光纤光栅氢气传感器.40 nm WO3-Pd复合薄膜是由5 nm的WO3、5 nm的WO3/Pd混合膜和30 nm的Pd 薄膜组成.实验中,首先采用射频溅射技术向D型光纤光栅溅射5 nm WO3薄膜,再利用共溅射技术溅射5 nm WO3/Pd混合膜,最后用直流溅射技术溅射30 nm的Pd薄膜.SE...
12.5-Gb/s Wireless Data Transmission by Using Bias Modulation of NBUTC-PD Based W-Band Photonic Transmitter-Mixer
Photodiodes Modulators
2015/6/8
We demonstrated near-ballistic uni-traveling-carrier photodiode based broadband photonic transmitter-mixers with quasi-Yagi radiators fed horn antennas. 100GHz wireless transmission with date rate as ...
Pd/Au纳米结构制备和粒子组分自旋的谱学性能研究
Pd/Au活性 油浴 电催化性 稳定性
2011/4/25
为研究Pd/Au纳米结构制备和电催化性能、控制粒子大小组分和自旋，用油浴热分解方法制备了核/壳纳米结构Pd/Au双金属合金纳米颗粒，采用PVP和多元醇作表面活性剂和稳定剂，依据溶液浓度、颗粒大小、吸附能控制晶相获得了均匀、一致的2层和3层Pd/Au纳米样品，并采用HAADF和HRTEM测试了纳米结构尺寸形貌，用EDS测试了成分分布，试验产物用TEM/XRD进行了表征，结果表明，Pd/Au具有面心立...
Wavelength conversion of 4x 112Gbit/s PD-RZ-QPSK signals based on single pump polarization diversity FWM scheme
Wavelength conversion PD-RZ-QPSK signals single pump polarization diversity FWM
2015/7/20
We report wavelength conversion of 4x112Gb/s PD-RZ-QPSK signals based on single pump polarization diversity scheme and digital coherent detection. The OSNR penalty after wavelength conversion is small...
W-band 3.75-Gb/s 8PSK Wireless Signal Generation and Transmission via Optical Frequency Octupling and Bias Modulation of NBUTC-PD with Feed-Forward Equalizer
Wireless Signal Generation Optical Frequency Octupling NBUTC-PD Feed-Forward Equalizer
2015/7/17
Generation and transmission of a wireless W-band 8PSK signal with 3.75-Gb/s data rate are experimentally demonstrated. The W-band carrier is generated from millimeter-wave generation with frequency oc...
Investigations of electrical properties of Eu- and Pd-doped titanium dioxide thin films on silicon
oxide semiconductor
2011/5/4
In this work, investigations of electrical properties of Eu- and Pd-doped TiO2 thin films have been outlined. Thin films were deposited by low pressure hot target reactive magnetron sputtering from me...
Influence of post annealing on optical and structural properties of Eu and Pd-doped TiO2 thin films
transparent oxide semiconductor
2011/5/3
This work presents optical and structural characterization of europium and palladium doped titanium dioxide thin films prepared by modified magnetron sputtering. The metallic Eu and Pd dopants have be...