MMI阵列波导光栅复用/解复用器的研制

详细分析了基于自镜像效应的 MMI DMUX器件的基本工作原理 ,在此基础上 ,在 SOI材料上完成了对 8信道 MMI DMU X的具体设计 .该器件的输入、输出单模波导采用 Soref的大截面脊形光波导理论进行优化设计 ,最后获得了当输入、输出单模波导宽度为 5 μm,SIE多模波导宽度和长度分别为 72 μm和 6 313.4μm时 ,该器件对8信道波长的隔离度均在 35 d B以上 ,且理论传输损耗 <0 .18d B.     

阵列波导光栅复用/解复用器新技术

阵列波导光栅是正在迅速发展的密集波分复用网络关键器件之一,是目前研究开发与应用的热点。本文综述了阵列波导光栅复用/解复用器的性能及新技术。     

MMI型1.31／1.55umGaAs波分复用／解复用器的研制

利用多模波导的自镜像原理,分析设计了一种能直接与单模光纤相耦合的具有最小循环比的1031/1.55um波长的GaAs/G aAlAs波分复用／解复用器。该器件的输入、输出单模波导和SIE多模波导采用离散谱折射率法进行了优化设计,最后获得了当输入、输出单模波导宽为3um、SIE多模波导宽度和最佳耦合长度分别为18um和5602.8um时,该器件的1.31um和1.55um两个波长的隔离度均在70dB以上,且传输损耗小于0.1 dB.     

阵列波导光栅复用/解复用器光栅孔径对器件性能影响的数值分析

阵列波导光栅复用/解复用器中波导光栅孔径是器件重要的结构参数.波导光栅孔径数值有限,部分光场将因未被耦合进而损失掉.同时引起输出波导接收端焦场变形,增加了器件串扰.本文详细分析和计算了由于波导光栅孔径有限引起的光场损耗和信号串扰,选择适当孔径参数可使其引入的信号损耗和串扰降到足够低,以优化设计器件.     

阵列波导光栅复用/解复用器光栅孔径对器件性能影响的数值分析

阵列波导光栅复用 /解复用器中波导光栅孔径是器件重要的结构参数 .波导光栅孔径数值有限 ,部分光场将因未被耦合进而损失掉 .同时引起输出波导接收端焦场变形 ,增加了器件串扰 .本文详细分析和计算了由于波导光栅孔径有限引起的光场损耗和信号串扰 ,选择适当孔径参数可使其引入的信号损耗和串扰降到足够低 ,以优化设计器件     

MMI型1.31/1.55 μm GaAs波分复用/解复用器的研制

利用多模波导的自镜像原理,分析设计了一种能直接与单模光纤相耦合的具有最小循环比的1.31/1.55 μm波长的GaAs/GaAlAs波分复用/解复用器。该器件的输入、输出单模波导和SIE多模波导采用离散谱折射率法进行优化设计,最后获得了当输入、输出单模波导宽为3 μm、SIE多模波导宽度和最佳耦合长度分别为18 μm和5 602.8 μm时,该器件对1.31 μm和1.55 μm两个波长的隔离度均在70 dB以上,且传输损耗小于0.1 dB。     

阵列波导光栅复用器／解复用器

随着社会对信息需求的巨大增长,对现有光纤通信系统提出了新的要求,密集波分复用(DWDM)已成为扩大传输容量的主要技术之一。目前16-48通道的DWDM已被大量使用,Tb/s和超过100通道的DWDM系统已研制成功。在这样的系统中,波分复用器和解波分复用器(WDM/DEWDM)是最为核心的光     

基于二维分布阵列波导光栅的光波分复用器/解复用器

基于二维分布衍射光栅与平面波导概念,提出了基于二维分布阵列波导光栅的光波分复用器／解复用器。光波分复用器／解复用器利用二维衍射光栅的波长变化下光波的衍射路径由两个方向的色散值矢量合成决定这一特性,同时适当地控制其自由谱范围特性的设计,使其具有二维光波分分布特性,从而可以在输入和／或输出端设计二维输入／输出通道,大大增加波分复用与解复用的通道数的设计能力。对器件的特性与应用进行了讨论。     

基于FD-BPM方法的阵列波导光栅模拟

给出了一种采用FD-BPM方法对整个阵列波导光栅(AWG)器件进行方便而精确地模拟的方法和一个AWG设计实例的模拟结果,并对模拟结果进行了分析.由模拟得到的器件基本参数与实际设计值符合得很好.     

Low-loss athermal bulk-optic flat-top passband MUX/DMUX

Low-loss (<6 dB), flat-top, 16-wavelength, 100-GHz channel spacing DWDM (de)multiplexers are reported. The bulk-optics architecture used allows excellent thermal stability for operating temperature [-10, 60°C]     

阵列波导光栅器件及应用

简述阵列波导光栅(AWG)复用／解复用器的原理，总结和分析AWG器件性能的一些改进措施，并综述了AWG在当今光通信中的多种应用。     

一种新颖结构紧凑的AWG器件

给出一种基于SOI材料结构紧凑的新颖AWG器件,它是将一个全内反射波导镜插入原波导阵列中间,并且利用全内反射时产生的相位差进行TE、TM模偏振补偿的方法,该器件具有尺寸小、制作工艺简单等特点.同时,给出一些实验结果,实验结果证实这种结构的AWG器件是可行的.     

一种新颖结构紧凑的AWG器件

给出一种基于SOI材料结构紧凑的新颖AWG器件,它是将一个全内反射波导镜插入原波导阵列中间,并且利用全内反射时产生的相位差进行TE、TM模偏振补偿的方法,该器件具有尺寸小、制作工艺简单等特点.同时,给出一些实验结果,实验结果证实这种结构的AWG器件是可行的.     

Spectral Phase Encoder Employing an Arrayed-Waveguide Grating and Phase-Shifting Structure

This letter reports a spectral phase encoder using an arrayed-waveguide grating (AWG) with phase-adjustable structure. It consists of the 12.5-GHz spacing eight-channel AWG phase-adjustable structure with deep trenches formed in the waveguides. The spectral phase encoding of optical short pulses at the repetition rate of 12.5 GHz using the AWG encoder was successfully demonstrated.     

Optoelectronic Packaging of Arrayed-Waveguide Grating Modules and Their Environmental Stability Tests

We designed and fabricated arrayed-waveguide grating (AWG) modules with thermoelectric coolers/heaters. At these modules we measured the optical fiber-chip coupling loss and the optical reflections. Further we investigated the temperature stability of the center wavelengths. The fabricated AWGs had 8 and 16 channels, respectively, with a spacing of 0.8 nm (100 GHz) at 1540 nm center wavelength. The measurements show that the center wavelength could be kept constant within ±0.015 nm at ambient temperatures between 0 to 40 °C. The center wavelength could be tuned over 0.3 nm by temperature adjustment. We performed environmental tests that revealed a good mechanical stability of the AWG modules.     

Compensation for Second-Order Temperature Dependence in Athermal Arrayed-Waveguide Grating Realizing Wide Temperature Range Operation

We propose a new compensation technique for the second-order temperature dependence in a silica-based arrayed-waveguide grating (AWG) multi/demultiplexer with a resin-filled groove that realizes a wide operating temperature range. We newly employ an additional interferometer in the input port and control the optical field perturbation by using a first-mode lightwave at the entrance to the first slab waveguide. We employ the design to fabricate a 32-channel 100-GHz-spacing athermal AWG that is as compact as a conventional AWG, and demonstrate a reduction in the passband wavelength variation from 70 to 22 pm over an extended $-$ 40 $^{circ}hbox{C}$ to 80 $^{circ}hbox{C}$ temperature range.      

50-GHz-Spacing Athermal Mach–Zehnder Interferometer-Synchronized Arrayed-Waveguide Grating With Improved Temperature Insensitivity

We describe a technique designed to compensate for the residual temperature sensitivity of an athermal silica-based arrayed-waveguide grating (AWG) and its application to a 50-GHz-spacing multi/demultiplexer with a low loss and a wide passband. The device has a Mach–Zehnder interferometer (MZI)-synchronized configuration, in which the AWG and the MZI are athermalized with resin-filled grooves. The point is that we employ a temperature-dependent phase-generating coupler (TD-PGC) in the MZI to compensate for the second-order temperature dependence of the AWG passband wavelength. The fabricated device exhibits practical characteristics including a low loss of less than 3.5 dB and a wide 0.5-dB bandwidth of 24.1 GHz as well as a reduced wavelength variation of less than 10 pm in a ${-}$ 5 $^{circ}hbox{C}$ to 65 $^{circ}hbox{C}$ temperature range.