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新型光调制器综述 被引量:1
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作者 吴平方 邢金玉 金施群 《现代显示》 2013年第1期17-22,共6页
文章介绍了目前较先进的光调制器件,并对各个光调制器件的基本原理、最简单模型、最简单数学原理、优缺点(特别是能否适应于规模化集成等)、发展现状(包括一部分发展史、现阶段状况和是否已经应用于工业实际)等进行了综合分析与比较,为... 文章介绍了目前较先进的光调制器件,并对各个光调制器件的基本原理、最简单模型、最简单数学原理、优缺点(特别是能否适应于规模化集成等)、发展现状(包括一部分发展史、现阶段状况和是否已经应用于工业实际)等进行了综合分析与比较,为学者或者工程人员们选择光调制器件提供参考。 展开更多
关键词 光调制器件 基本原理 优点 集成
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在GaAs基板上外延生长的LiTaO3光学薄膜
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作者 高晓萍 《光机电信息》 1995年第4期38-38,共1页
关键词 LITAO3 学薄膜 外延生长 GaAs基板 半导体激 SHG器 光调制器件
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激光技术与应用
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《光机电信息》 2006年第8期74-79,共6页
关键词 技术 自由电子激 CO2激 应用 测量 火力发电厂 设计与开发 光调制器件 固体激 干涉仪
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Butt-Joint Monolithically Integrated DFB-LD/EA-MD Light Source for 10Gbit/s Transmission
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作者 李宝霞 胡小华 +4 位作者 朱洪亮 王保军 边静 赵玲娟 王圩 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2005年第6期1100-1103,共4页
This paper reports on the design,fabrication,and performance of an integrated electro-absorptive modulated laser based on butt-joint configuration for 10Gbit/s application.This paper mainly aims at two aspects.One is ... This paper reports on the design,fabrication,and performance of an integrated electro-absorptive modulated laser based on butt-joint configuration for 10Gbit/s application.This paper mainly aims at two aspects.One is to improve the optical coupling between the laser and modulator;another is to increase the bandwidth of such devices by reducing the capacitance parameter of the modulator.The integrated devices exhibit high static and dynamic characteristics. Typical threshold current is 15mA,with some value as low as 8mA.Output power at 100mA is more than 10mW.The extinction characteristics,modulation bandwidth,and electrical return loss are measured.3dB bandwidth more than 10GHz is monitored. 展开更多
关键词 integrated optoelectronic device electro-absorptive modulator distributed-feedback lasers butt-joint 3dB-bandwidth
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提供可调带隙的硅结构
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作者 顾聚兴 《红外》 CAS 2002年第8期19-19,共1页
可调光子带隙材料有望成为光调制器件,可应用于电信、显示和数据储存等领域。但是现有的材料呈现的不是高可调性慢响应速度,就是快响应速度低可调性。目前,美国宾夕法尼亚州立大学的研究人员已设计出一种光子晶体,它能同时提供高可调性... 可调光子带隙材料有望成为光调制器件,可应用于电信、显示和数据储存等领域。但是现有的材料呈现的不是高可调性慢响应速度,就是快响应速度低可调性。目前,美国宾夕法尼亚州立大学的研究人员已设计出一种光子晶体,它能同时提供高可调性和快响应速度。他们还设计出一种由两种绝缘材料构成的列阵结构。他们把一种材料加工成柱形并嵌入另一种材料,构成一个六边形图案。根据这两种材料的介电常数以及所嵌入的柱的直径和间距,计算结果表明,这种结构应呈现一个绝对带隙,它能同时阻止横向电场偏振光和横向磁场偏振光的传播。在硅薄膜中有气孔。 展开更多
关键词 光调制器件 子晶体 可调带隙材料 硅结构
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Modulation instability of dispersion-shifted fiber couplers 被引量:1
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作者 ZHOU Yan-yong JIA Wei-guo +2 位作者 HAN Ying-ming YING Chun BAO Hong-mei 《Optoelectronics Letters》 EI 2008年第4期264-268,共5页
The nonlinear coupled-mode equations are rewritten by even and odd modes.We study modulation instability(MI) of dispersion-shifted fiber couplers when either even or odd mode is launched alone by using zero-dispersion... The nonlinear coupled-mode equations are rewritten by even and odd modes.We study modulation instability(MI) of dispersion-shifted fiber couplers when either even or odd mode is launched alone by using zero-dispersion wavelength relatively long(quasi-cw) pulses.The result shows that there are new types of MI in both the normal-dispersion and the anomalous-dispersion regimes.MI is concerned with forth-order dispersion and has no relation with third-order dispersion.Quasi-cw can be changed into pulses array under certain conditions.We can extract super short pulse from this.Furthermore,the bandwidth of gain spectra widens and its strength accretes as the input power increases. 展开更多
关键词 纤耦合器 非线性耦合方程 调制不稳定性 学器
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Specially shaped Bessel-like self-accelerating beams along predesigned trajectories 被引量:4
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作者 Juanying Zhao I.D.Chremmos +5 位作者 Ze Zhang Yi Hu Daohong Song Peng Zhang N.K.Efremidis Zhigang Chen 《Science Bulletin》 SCIE EI CAS CSCD 2015年第13期1157-1169,共13页
Over the past several years, spatially shaped self-accelerating beams along different trajectories have been studied extensively. Due to their useful properties such as resistance to diffraction, self-healing, and sel... Over the past several years, spatially shaped self-accelerating beams along different trajectories have been studied extensively. Due to their useful properties such as resistance to diffraction, self-healing, and selfbending even in free space, these beams have attracted great attention with many proposed applications. Interestingly, some of these beams could be designed with controllable spatial profiles and thus propagate along various desired trajectories such as parabolic, snake-like, hyperbolic, hyperbolic secant, three-dimensional spiraling, and even self-propelling trajectories. Experimentally, suchbeams are realized typically by using a spatial light modulator so as to imprint a desired phase distribution on a Gaussian-like input wave front propagating under paraxial or nonparaxial conditions. In this paper, we provide a brief overview of our recent work on specially shaped self-accelerating beams, including Bessel-like, breathing Bessellike, and vortex Bessel-like beams. In addition, we propose and demonstrate a new type of dynamical Bessel-like beams that can exhibit not only self-accelerating but also self-propelling during propagation. Both theoretical and experimental results are presented along with a brief discussion of potential applications. 展开更多
关键词 Airy beams . Bessel beams . Vortexbeams - Nondiffracting beams . Self-acceleratingSelf-healing
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Advances and New Applications Using the Acousto-Optic Effect in Optical Fibers
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作者 Alexandre A. P. POHL Roberson A. OLIVEIRA +5 位作者 Ricardo E. DA SILVA Carlos A. F. MARQUES Paulo de Tarso NEVES JR. Kevin COOK John CANNING Rogério N. NOGUEIRA3 《Photonic Sensors》 SCIE EI CAS 2013年第1期1-25,共25页
This work presents a short review of the current research on the acousto-optic mechanism applied to optical fibers. The role of the piezoelectric element and the acousto-optic modulator in the excitation of flexural a... This work presents a short review of the current research on the acousto-optic mechanism applied to optical fibers. The role of the piezoelectric element and the acousto-optic modulator in the excitation of flexural and longitudinal acoustic modes in the frequency range up to 1.2 MHz is highlighted. A combination of the finite elements and the transfer matrix methods is used to simulate the interaction of the waves with Bragg and long period gratings. Results show a very good agreement with experimental data. Recent applications such as the writing of gratings under the acoustic excitation and a novel viscometer sensor based on the acousto-optic mechanism are discussed. 展开更多
关键词 ACOUSTO-OPTICS fiber gratings optical fibers optical sensors
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