共查询到20条相似文献，搜索用时 0 毫秒
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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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基于光波导模场分布的高斯函数近似表达式,给出非对称结构阵列波导光栅解复用器信号通道对其中心波长光谱响应度的函数表达式,分析了光谱响应度与器件基本参数的关系.基于实际通道信号光谱分布的高斯函数近似表达,给出非对称结构阵列波导光栅解复用器信号通道对实际输入信号的传输效率,分析了输入信号光谱宽度对器件通道实际传输效率的影响. 相似文献
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分析了28路AM—VSB电视信号光纤传输系统的性能,着重讨论了激光器非线性引起的互调失真及光接收噪声性能,并给出了激光器互调干扰的简便测试方法及激光调制指数的优化选择方法。 相似文献
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通过对弯曲阵列波导的优化设计 ,讨论了阵列波导光栅 (AWG)作波分复用器传输多频线性调制信号时的色散特性 ,得到其传输功率与波长的关系。分析表明 :对于优化弯曲波导 ,脉冲展宽波长Δλ≤ 0 .5nm ,插入损耗为 6± 1dB 相似文献
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利用有效折射率法分析了Ge0.05Si0.95／Si脊形光波导的光场分布，得到了这种光波导在传输单模时内脊高b、外脊高h和脊宽W的合理取值，还为其它光波导器件的设计奠定了基础。 相似文献
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本文采用等效波导光栅Ｆ－ｐ腔方法分析了有耗情况下ＬｉＮｂＯ３光波导ＤＢＲ结构的透射特性，给出了利用这一结构设计电光强度调制器以及电调频分器的方法。 相似文献
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WANG Jian 《半导体光子学与技术》1997,(4)
ＥｆｅｃｔｓｏｆｔｈｅＰｌａｎａｒＯｐｔｉｃａｌＷａｖｅｇｕｉｄｅＴｈｉｃｋｎｅｓｏｎｔｈｅＴｒａｎｓｍｉｓｉｏｎＡｔｅｎｕａｔｉｏｎ①ＷＡＮＧＪｉａｎ（Ｅｌｅｃｔｒ．Ｄｅｐｔ．，ＣｉｖｉｌＡｖｉａｔｉｏｎＩｎｓｔｉｔｕｔｅｏｆＣｈｉｎａ，Ｔｉａｎｊ... 相似文献
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WANGJian SUHansong 《半导体光子学与技术》1997,3(4):256-261
By analyzing and computing,according to the wave theory of planar optical waveguide attenuation,a new opinion is put forward.A series of transmission atteenuation with waveguide film-thickness are given and it illustrates that optical transmission is not carrying out efficiently within some waveguide film-thickness. 相似文献
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采用2点及3点Stigmatic points方法设计阵列波导光栅（AWG）器件，对传统的Rowland圆结构设计做了改进。比较分析了传统设计和改进设计AWG器件的像差，讨论了阵列波导的接收孔径及输入光信号的等效高斯光束发散角对AWG器件性能的影响。指出了传统的Rowland圆结构设计在设计高通道数AWG器件时存在的边缘通道性能劣化问题，采用多点Stigmatic points方法设计能很好地解决这一问题。 相似文献
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提出了一种基于三芯光纤的模式复用器/解复用器,三个纤芯包括两个相同的单模纤芯和一个少模纤芯,在少模纤芯中写入长周期光纤光栅以实现单模纤芯中LP01模与少模纤芯中LP11模间的转换。同时从两个单模纤芯输入LP01模,能激发少模纤芯中两个简并的LP11,a模和LP11,b模。采用光束传播法分析了该模式复用器/解复用器的耦合特性及串扰。数值模拟结果显示,若以少模纤芯中LP11模输出能量大于-1dB的波长范围作为该模式复用器/解复用器的工作带宽,则能够达到23nm,并且少模纤芯中生成的其他模式的输出能量皆比LP11模的输出能量小-21dB以上。该模式复用器/解复用器能够实现对少模光纤的模式复用与解复用,并具有极低的串扰。 相似文献
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The operation principle of an arrayed waveguide grating(AWG) multiplexer is introduced and the 4×4 AWG with following design parameters is discussed in detail, such as the choice of wavelength, the neighboring arrayed waveguide distance ΔL, the channel frequency interval Δf, and the free spectral range. The structure of 4×4 AWG is designed and the result of stimulated test is also given. Analysis shows that the 4×4 AWG is characterized by a wide dynamic range, low crosstalk, better spectrum properties, and a compact structure. 相似文献
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Jung Jin Ju Min‐su Kim Suntak Park Jin Tae Kim Seung Koo Park Myung‐Hyun Lee 《ETRI Journal》2007,29(6):808-810
We demonstrate 10 Gbps optical signal transmission via long‐range surface plasmon polaritons (LR‐SPPs) in a very thin metal strip‐guided geometry. The LR‐SPP waveguide was fabricated as a 14 nm thick, 2.5 μm wide, and 4 cm long gold strip embedded in a polymer and pigtailed with single‐mode fibers. The total insertion loss of 16 dB was achieved at a wavelength of 1.55 μm as a carrier wave. In a 10 Gbps optical signal transmission experiment, the LR‐SPP waveguide exhibits an excellent eye opening and a 2.2 dB power penalty at 10?12 bit error rate. We confirm, for the first time, that LR‐SPPs can efficiently transfer data signals as well as the carrier light. 相似文献
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