Optical pulse shaper with integrated slab waveguide for arbitrary waveform generation using optical gradient force

Integrated optical pulse shaper opens up possibilities for realizing the ultra high-speed and ultra wide-band linear signal processing with compact size and low power consumption. We propose a silicon monolithic integrated optical pulse shaper using optical gradient force, which is based on the eight-path finite impulse response. A cantilever structure is fabricated in one arm of the Mach–Zehnder interferometer（MZI） to act as an amplitude modulator. The phase shift feature of waveguide is analyzed with the optical pump power, and five typical waveforms are demonstrated with the manipulation of optical force. Unlike other pulse shaper schemes based on thermo–optic effect or electro–optic effect, our scheme is based on a new degree of freedom manipulation, i.e., optical force, so no microelectrodes are required on the silicon chip,which can reduce the complexity of fabrication. Besides, the chip structure is suitable for commercial silicon on an insulator（SOI） wafer, which has a top silicon layer of about 220 nm in thickness.     

基于锗硅芯片的光电子学前景与挑战

作为微电子材料,硅具备许多优良的电学特性．采用硅材料的器件集成度能够比其他材料高几个数量级。然而．硅是一种间接带隙材料,其光学跃迁过程会引入大量低能的声子造成跃迁几率很低．导致其光学特性（发射与吸收）远不如Ⅲ/Ⅴ族半导体材料。     

Quantum Computation on a Silicon Chip

We propose a potential quantum-computer hardware-architecture model on a silicon chip in which the basic cell gate is the atom-photon controlled phase flip gate. This gate can be implemented through a single-photon pulses scattering by a toroidal microcavity trapping a neutral atom, and it does not require very strict strong-coupling regime and can work beyond the Lamb-Dicke limit with high fidelity and success probability under practical noise environments. Especially, good and bad losses of the toroidal cavity are discussed in detail. Finally, a possibly simple experiment based on current experimental technology is proposed to demonstrate our scheme.     

NiⅡ-NTA修饰的银纳米粒/多孔硅芯片在线分离组氨酸标记蛋白和MALDI-TOF质谱检测

本文通过沉积在多孔硅表面的银纳米粒吸附对氨基苯硫酚和氨基的化学转化得到终端为Ni^Ⅱ-Nα,Nα-二(羧甲基)-L-赖氨酸水合物-即 Ni^Ⅱ-NTA体系的芯片。Ni^Ⅱ-NTA修饰的芯片被用于从高浓度的盐和助溶剂的缓冲体系中亲和捕获组氨酸标记的融合蛋白：thioredoxin-urodilatin和SUMO-hu-aprotinin,并进行在线的MALDI-TOF质谱检测,克服了MALDI-TOF质谱中直接点样污染物妨碍样品与基质共结晶的问题,避免了繁琐的离线样品预处理。芯片在线分离、纯化和MALDI-TOF质谱分析体系有望在复杂或原始体液的溶液中分析目标分子。     

Double-notch-shaped microdisk resonator devices with gapless coupling on a silicon chip

We propose novel double-notch-shaped microdisk resonator-based devices with gapless waveguide-to- microdisk and inter-cavity coupling via the two notches of the microdisk. Both finite-difference time- domain simulations and experimental demonstrations reveal the high-quality-factor multimode resonances in such microdisks. Using such double-notch mierodisk resonators, we experimentally demonstrate the many-element linearly cascaded-microdisk resonator devices with up to 50 elements on a silicon chip.     

用于微电子硅芯片液晶显示的反射式中继目视系统

设计了用对角为 18mm的微电子硅芯片液晶显示器、6 0°视场角的反射中继头盔显示系统。该系统由一个常用的艾尔弗 (Erfle)接目镜和一个反射中继镜组成。反射中继镜和接目镜的场曲异号 ,因此相互部分抵消 ,系统具有较小的场曲和像散。中继系统的采用 ,不仅保证了头盔显示的特定规格要求 ,诸如出瞳直径和出瞳距离 ,而且为反射式微电子硅芯片液晶显示器的照明光源提供了空间。该系统像差较小 ,尺寸和重量合理 ,适用于特定用途的头盔显示     

硅片上的Ⅲ-Ⅴ族激光半导体和微环形镜

新加坡A＊STAR数据存储研究所的一个研究小组已制造出电动Ⅲ-Ⅴ族半导体激光和装在硅芯片上的新型腔镜——这标志着向光学数据互连迈进了一步。     

首块激光器和光栅集成的硅芯片问世

据美国物理学家组织网8月10日(北京时间)报道,新加坡数据存储研究所的魏永强(音译)和同事首次构建出一种由一个激光器和一个光栅集成的新型硅芯片,其中的光栅能让光变得更强并确保激光器输出1500纳米左右波长的光,而通讯设备标准的操作波长正是1500纳米。光纤在传输数据时需要让不同波长的     

首个可直接兼容硅芯片的锗锡半导体激光器

来自尤里希旗下"皮特格林贝格研究所"(PGI-9)和"保罗谢勒研究所"(Paul Scherrer Institute)的科学家们已经用锗和锡制成了实验用的附件,并且在硅晶片上进行了测试。保罗谢勒研究所在测定之后发现,锗锡化合物可以同时产生和放大激光信号,而且锡元素对这种新设备的光学性能显得非常重要。