共查询到20条相似文献,搜索用时 15 毫秒
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Lee Y. J. Bae J. Lee K. Jeong J.-M. Lee S. B. 《Photonics Technology Letters, IEEE》2007,19(10):762-764
We propose a tunable dispersion and dispersion slope compensator based on induced strain-chirp in a uniform fiber Bragg grating. A specially designed mechanical rotator concatenated with a metal beam with linear thickness variation along its height was used to induce a quadratic strain gradient along the grating. We successfully demonstrated the dispersion and dispersion slope change by adjusting the rotation angle and feasibility of dispersion and dispersion slope compensation at 160-Gb/s nonreturn-to-zero transmission by simulation 相似文献
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《Photonics Technology Letters, IEEE》2008,20(21):1790-1792
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We propose and demonstrate a novel colorless tunable optical dispersion compensator (TODC) consisting of a Mach-Zehnder interferometer (MZI) connected to an ar- rayed-waveguide grating with a thermooptic lens. The MZI approximately doubles the magnitude bandwidth at large dispersion settings. We demonstrate compensation of a 43-Gb/s nonreturn-to-zero signal dispersed over a range of -844 to + 1700 ps/nm. To our knowledge, +1700 ps/nm is the largest demonstrated dispersion compensation amount of a 40-Gb/s signal with a single TODC. 相似文献
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Soichi Kobayashi Masayuki Sawada Toshihiro Suda K. Ogura H. Tsushima 《Photonics Technology Letters, IEEE》2007,19(6):363-365
A new Bragg grating filter (BGF) in a polysilane waveguide has been fabricated by a two-beam interferometric photobleaching method using a He-Cd laser. A narrow reflected bandwidth of 0.4 nm was measured using a 1.55-mum light-emitting diode. The temperature dependence of the BGF was measured as 0.096 nm/degC with temperature control over a range between 30 degC and 70 degC and exhibited a good coincidence with the theoretical values 相似文献
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制作了基于绝缘体上硅(Silicon on Insulator,SOI)材料的8×16通道的阵列波导光栅(Arrayed Waveguide Grating,AWG)与电吸收型可调光衰减器(Variable OpticalAttenuator,VOA)的单片集成器件,其信道间隔为200 GHz.该集成器件采用脊形波导结构,其截面尺寸为亚微米级,整体尺寸为2.9 mm×1 mm.该VMUX器件的片上损耗为9.324~10.048 dB,串扰为6.5~8.2 dB;在20 dB衰减下,单通道最大功耗为87.98 mW;最大信道偏振相关损耗(Polarization Dependent Loss,PDL)为0.461 dB,16通道的衰减一致性为0.245 dB.该器件能够实现良好的波分复用/解复用及信道功率均衡的功能. 相似文献
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Wang Y. Yu C. Yan L. Willner A. E. Roussev R. Langrock C. Fejer M. M. Sharping J. E. Gaeta A. L. 《Photonics Technology Letters, IEEE》2007,19(11):861-863
This letter presents an optically controlled, continuously tunable, dispersionless optical delay element in fiber based on a selective wavelength converter using a periodically poled lithium-niobate waveguide with two-pump configuration, dispersion-compensated fiber, and a dispersion compensator. Optical phase information is preserved in this technique, and there is no fundamental limitation on pulsewidth or bit rate. A Continuous optical delay up to 44-ns is shown for 10-Gb/s nonreturn-to-zero applications, which is equal to a 440-bit slot 相似文献
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Cyclic arrayed waveguide grating (AWG) devices with flat-top passband and uniform spectral response are proposed. Each access waveguide of the proposed cyclic AWG consists of a multimode interference region and a taper waveguide. Simulation results show that the 1-dB bandwidth of the proposed device is larger than 0.44 times the channel spacing and the corresponding nonuniformity is smaller than 1 dB. 相似文献
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1 IntroductionTheArrayedWaveguideGrating(AWG)multi plexerisanimportantopticaldeviceforWavelengthDivisionMultiplexing (WDM )inopticaltelecom municationsystems[1~ 5] .Thisdevicecanoffersomebasicfunctionsincludingmultiplexing/demultiplex ing ,add/dropmultiplexingandN×Ninterconnec tion.Also,itpossessessomeadvantages,suchasnarrowerwavelengthspacing ,moresignalchannels,lowercrosstalkandsmootherpassbands.AWGmul tiplexers[6~1 0 ] havebeenfabricatedusingsilicas,InPandpolymers.Amongthem ,apo… 相似文献
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Simple Reconfigurable Photonic Microwave Filter Using an Arrayed Waveguide Grating and Fiber Bragg Gratings 总被引:2,自引:0,他引:2
We demonstrate a photonic microwave finite impulse response filter with reconfiguration and tuning capabilities. The filter is based on spectral slicing of a broadband source and optical fiber as a wideband dispersive medium. An arrayed waveguide grating and fiber Bragg gratings are used to select and vary the weight of the optical taps to achieve reconfiguration and tuning 相似文献
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研究一种新型无热化阵列波导光栅,这是由聚合物组成的一种新型阵列波导光栅。阵列波导光栅对温度的依赖性受波导物质的折射率、热膨胀系数和波导芯的尺寸影响,所以,通过调节这些参数就可以减小温度对阵列波导光栅的影响。优化得到全聚合物型阵列波导光栅在温度20℃~70℃范围内波谱漂移小于常规型AWG结构的0.5%。 相似文献
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线性chirp光纤光栅色散补偿器的理论与计算 总被引:3,自引:0,他引:3
从物理上解释了线性chirp光纤光栅色散补偿器的工作原理,根据耦合理论,导出光纤光栅的基本方程,利用这一方程,计算了线性chirp光纤光栅的响应特性。 相似文献
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简述了阵列被导光栅复用/解复用器件的基本原理及其相关特性,并对其在WDM光通信关键器件中的应用作了概述. 相似文献
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