【摘 要】
：
We report an 8-channel wavelength-mode optical pulse interleaver on a silicon photonic chip. Wavelength- and mode-division multiplexing techniques are combined to increase the repetition rate of the pulses without adding the complexity of a single dimensi
【机 构】
：
StateKeyLaboratoryofAdvancedOpticalCommunicationSystemsandNetworks,ShanghaiKeyLaboratoryofNavigation
【出 处】
：
ChineseOpticsLetters
论文部分内容阅读
We report an 8-channel wavelength-mode optical pulse interleaver on a silicon photonic chip. Wavelength- and mode-division multiplexing techniques are combined to increase the repetition rate of the pulses without adding the complexity of a single dimension. The interleaver uses a cascaded Mach–Zehnder interferometer architecture as a wavelength-division (de)multiplexer, an asymmetric directional coupler as a mode (de)multiplexer, and various lengths of silicon waveguides as delay lines. A pulse sequence with a time interval of 125 ps is implemented with the repetition rate being eight times that of the initial one. The demonstrated wavelength-mode multiplexing approach opens a new route for the generation of high-speed optical pulses.
其他文献
We propose a new correction method for the splicing dislocation of sub-holograms in synthetic aperture digital holography. By adjusting the splicing distances between sub-holograms during the numerical reconstruction process using the convolution approach
科学家们第一次演示了在宽广的频率范围能够调谐的相干光振荡器。固态电子学研究实验室的周德迈恩(J. A. Giordmaine)和密勒（R. C. Miller)曾观察到在LiNbO3晶体中的可调谐的光学参量振荡。
利用单色共振双光子电离光谱技术研究了p-C6H4FCH3与Ar形成的范德瓦尔斯分子p-C6H4FCH3…Ar电子态跃迁(S1←S0)O00带附近的光谱，观察到了许多谱带。分析表明，这些谱带，除来自于甲基CH3内转动跃迁外，都可以归属为Ar相对于p-C6H4FCH3的振动跃迁。在用三维谐振子波函数线性组合作为基和
扫描电镜能直观观察样品的表面结构,但其高分辨形貌成像图固有的噪声不利于图像分析。针对集成电路器件扫描电镜成像图的去噪声问题,采用了通过滑动条方式自适应设置图像二值化阈值,将数学形态学处理方法与图像二值化相结合,实现了对图像噪声的自动去除处理;同时还设计了通过手动勾勒图像中的多边形区域实现去除噪声的功能;为使图像达到更好的效果,系统还可允许针对自动去噪后的图像自行选择是否进行手动去噪,并设计实现了风
A reliable target-triggering plasma shutter was applied to second harmonic generation (SHG) of AgGaSe_(2) crystal with a TEA CO_(2) laser. Under normal air pressure, argon charged plasma shutter was triggered by focusing beam companying with a pair of adj
本文介绍三级相关函数法测量ps光脉冲的形状和宽度的原理、装置和实验结果,并与TPF方法测量的结果进行了比较。
The adequate method of antibiotic choice is reported using the laser fluorescence analysis of blood plasma with the laboratory diagnostic device “Spectrolux-MB". The method is based on the ability of micro-organisms and products of their vital functions
近红外波长为1.064 μm的激光是激光测距、自由空间光通信和空间光学遥感等应用中的主要激光光源之一。窄带滤光片是抑制背景光干扰的关键元件之一,目前大部分滤光片的半峰全宽为几纳米。本文研制了中心波长为(1064±0.05) nm、半峰全宽为0.19 nm、峰值透过率可达70.2%的带通滤光片,并考察了不同温度(100,200,300 ℃)退火处理后滤光片的表面形貌和光谱特性的变化。实验结果表明:滤光片的表面光滑,受退火温度的影响很小;滤光片的透射光谱随着退火温度的升高向长波方向移动,在100 ℃退火处理3
为解决激光漫反射测距实测数据噪点多,真实回波信号难以可靠在线提取问题,提出一种基于时间相关性的激光漫反射测距回波信号的快速提取方法。基于实测数据特性分析将回波信号提取问题简化为n点搜索问题,并理论验证了基于时间相关性提取方法的正确性,通过权衡搜索代价与提取精度,给出n点选取规则。给出短时数据线性度和相邻数据关联度作为时间相关性的具体评价指标,设计遗传算法对缓存数据与在线数据并行寻优,降低搜索时间并
Emission enhancement at 2.7 mm is observed in Er3 /Pr3 -codoped germanate glasses when pumped by a 980-nm laser diode. Significant reductions in 1.5-mm emission and upconversion intensity indicate efficient energy transfer between Er3 and Pr3 ; the energ