共查询到18条相似文献,搜索用时 140 毫秒
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阵列波导光栅(AWG)复用/解复用器的优化设计计算是集成光波导器件设计计算中的难点.文章应用AWG光信号传输特性和光栅方程,提出了AWG组成部分输入/输出波导、阵列波导、平板波导相关参数及阵列波导结构优化设计的数值计算方法,给出了具体的计算数值;该计算方法解决了AWG复用器优化设计计算的问题,为进一步建立AWG的计算机辅助设计提供了基础. 相似文献
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基于集成光学的N×N阵列波导光栅(AWG)是波分复用传输网络最成功的光滤波器之一,是光子网络的关键基础元件,它可用于光信号的复用、解复用、光路上/下分插复用、光交叉连接,波长路由等。 波长N×N复用/解复用器 N×NAWG具有波长间隔小、信道数多、串音较低、输出平坦等特点,是较为理想的波分复用全光器件。该复用器由N个输入/输出波导,两个会聚的平板波导和在相邻波导之间路径长度差△L恒定的阵列波导构成。输入光射入第一个平板波导并激励阵列波导,光通过阵列波 相似文献
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基于阵列波导光栅的波分复用器件 总被引:2,自引:0,他引:2
阵列波导光栅波分复用 /解复用器有 N个输入端口和 N个输出端口 ,能同时传输 N2 路不同的光信号 ,除具有波分复用和解复用功能外 ,能灵活地与其它光器件组成多波长激光器、光路分插复用器、光路交叉连接器、波长路由器等波分复用器件 ,在光通信网络中有着广泛的应用前景。 相似文献
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Based on the electromagnetic field theory, the optical signal transmission characteristics in input/output waveguides, slab waveguides and arrayed waveguides of the arrayed waveguide grating (AWG) multi/demultiplexer are analyzed. The relationship between the physical parameters such as geometry sizes and relative refractive index in AWG multi/demultiplexer and the optical signal transmission characteristics are discussed. This theoretical study can be used for optimizing the design and improving the performance of the AWG multi/demultiplexer. 相似文献
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Based on the electromagnetic field theory,the optical signal transmission characteristics in input/output waveguides,slab waveguides and arrayed waveguides of the arrayed waveguide grating(AWG) multi/demultiplexer are analyzed.The relationship between the physical parameters such as geometry sizes and relative refractive index in AWG multi/demultiplexer and the optical signal transmission characteristics are discussed.This theoretical study can be used for optimizing the design and improving the performance of the AWG multi/demultiplexer. 相似文献
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A 16 channel arrayed waveguide grating demultiplexer with 200 GHz channel spacing based on Si nanowire waveguides is designed.The transmission spectra response simulated by transmission function method shows that the device has channel spacing of 1.6 nm and crosstalk of 31 dB.The device is fabricated by 193 nm deep UV lithography in silicon-on-substrate.The demultiplexing characteristics are observed with crosstalk of 5-8 dB,central channel’s insertion loss of 2.2 dB,free spectral range of 24.7 nm and average channel spacing of 1.475 nm.The cause of the spectral distortion is analyzed specifically. 相似文献
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Si纳米线阵列波导光栅制备 总被引:1,自引:1,他引:0
采用绝缘层上Si(SOI)材料设计制备了3×5纳米线阵列波导光栅(AWG),器件大小为110μm×100μm。利用简单传输法模拟了器件的传输谱,并采用二维时域有限差分(FDTD)模拟中心通道输出光场的稳态分布,模拟结果表明,器件的通道间隔为11 nm,通道间的串扰为18 dB。通过电子束曝光(EBL)和感应耦合等离子(ICP)刻蚀制备了所设计的器件,光输出谱测试分析表明,器件中心通道的片上损耗为9 dB,通道间隔为8.36~10.40 nm,中心输出通道的串扰为6 dB。在误差允许范围内,设计和测试的结果一致。 相似文献
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Zhen Sheng Daoxin Dai Sailing He 《Lightwave Technology, Journal of》2007,25(10):3001-3007
Dual-tapered auxiliary waveguides at the exit of the waveguide array are introduced to improve the channel uniformity of an Si-nanowire-based arrayed waveguide grating (AWG) demultiplexer. By using a hybrid simulation method, the dual-tapered auxiliary waveguides of the AWG demultiplexer are optimized reliably and efficiently. A 12-channel AWG demultiplexer is designed as an example, and a small nonuniformity (< 0.5 dB) is achieved. 相似文献
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A three-focal-point method is used for the design of a flat-top planar waveguide concave grating. With the Gaussian approximation a modified formula is proposed and is compared with the numerical model of the scalar diffraction theory by using a design example. The sources of loss caused by the flat-top design and the grating are taken into consideration. The optimal separation between the two outmost focal points is obtained and the spectral response of the demultiplexer with a ripple below 0.04 dB is achieved. 相似文献
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Chan T.K. Karp J. Rui Jiang Alic N. Radic S. Marki C.F. Ford J.E. 《Lightwave Technology, Journal of》2007,25(3):719-725
We demonstrate 1 x 1092 channel wavelength demultiplexing with 50-GHz channel pitch and a 600-nm total bandwidth. Outputs from 1 x 40 channel arrayed waveguide gratings operating with multiple orders enter a free-space optical grating demultiplexer which separates the orders into a 2-D spot array, where the light can be coupled into discrete output fibers or operated on by a surface normal device (i.e., microelectromechanical system switch or detector array). Supercontinuum source input from 1140 to 1750 nm produced a 28 times 39 spot array at the output plane. The insertion loss for light is coupled into a single mode fiber ranged from 7 to 18 dB with less than 10-dB loss in channels between 1300 and 1750 nm. Bit-error-rate measurements show a negligible 0.1-dB power penalty at 10 GB/s. 相似文献