一种具有无源温度补偿的反射型阵列波导光栅的研究

基于阵列波导光栅的结构对称性,提出了一种新的反射型阵列波导光栅结构,通过一种可调的反射镜实现了对波长温度漂移的补偿,最后实验验证了方法的可行性.     

阵列波导光栅复用器的数学特性

叙述了基于阵列波导光栅复用器的结构与原理,在此基础上分析了其输入与输出信号的傅里叶变换、信号传输、信号循环移位,复用、解复用和波长路由的信号矩阵变换等光信号时空变换和光信号处理的数学特性,拓宽了阵列波导光栅波分复用器的应用领域。     

阵列波导光栅集成多波长光源

密集波分复用(DWDM)是光纤通信中的关键技术,阵列波导光栅(AWG)在 DWDM 系统中有着广泛的应用。本文介绍了 AWG 的材料结构及 AWG 集成的多波长光源。     

阵列波导光栅及其应用

介绍了阵列波导光栅(AWG)的结构、复用／解复用的基本原理以及AWG在光纤通信网络中的应用，较全面描述了AWG的开发现状。     

阵列波导光栅的最近研究进展

阵列波导光栅(AWG)是密集波分复用(DWDM)光网络中的关键器件。本文分析了AWG的原理及其性能参数，综述了一些改进其性能的方法，并阐述了AWG在波长路由器、光分插复用器(13ADM)和光交叉互连(OXC)等方面的应用。     

阵列波导光栅及其应用

介绍了阵列波导光栅(AWG)的结构、复用/解复用的基本原理以及AWG在光纤通信网络中的应用,较全面描述了AWG的开发现状。     

阵列波导光栅插入损耗的降低

阵列波导光栅（AWG Arrayed Waveguide Grating）是实现多通道密集波分复用（DWDM Dense Wavelength Division Multiplexing)光网络的理想器件,插入损耗是它的一个重要性能指标。本文介绍了多种减小AWG插入损耗的方法,并在此基础上,分析了如何使用楔形波导结构来降低模式失配所导致的耦合损耗。这种方法可以在不增加器件制作难度的同时大大降低AWG的插入损耗,并且适用于各种材料和结构的AWG器件设计。     

温度不敏感阵列波导光栅

文章详细论述了温度不敏感平面阵列波导光栅(AWG)的设计原理和几种主要的实现方法,如针对硅基二氧化硅AWG,的负热光系数材料嵌入补偿方法、负热光系数材料上包层补偿方法、双金属片应力补偿方法和移动输入波导补偿方法等,并列举了采用这些方法的实际例子和补偿效果。     

结构紧凑的高均匀性硅波导阵列波导光栅

基于绝缘体上硅材料平台,设计并制作了一种结构紧凑的高均匀性硅波导阵列波导光栅,其拥有8个输出通道并且通道间隔为200 GHz。分析了绝缘体上硅材料平台中硅波导的弯曲半径对弯曲损耗和有效折射率的影响。测试结果表明,该器件的插入损耗为19.6 dB,串扰为-15 dB,非均匀性为0.87 dB,3 dB带宽为1.06 nm,结构尺寸仅为294μm×190μm。芯片的制作工艺与互补金属氧化物半导体工艺兼容,这使得阵列波导光栅的大批量、低成本生产成为可能,对集成波分复用网络的发展具有重要的意义。     

A novel fabrication approach for an athermal arrayed-waveguide grating

A novel method for fabricating an athermal AWG is proposed, using a unique apparatus for ITU-T center wavelength adjustment and optical coupling of two cut-parts. UV adhesive or sticky gel is applied into the gap between the cut-elements and the alignment base substrate by capillary infiltration. The spectrum profiles are almost the same as those of the original chip state, and no deterioration is observed resulting from athermalization. Flat-top athermal AWG modules of 100 GHz×40 ch are fabricated. Over a temperature range of-40 to 85℃, the center wavelength shift is±22 pm, and the insertion loss change is less than ±0.11 dB.     

基于阵列波导光栅的波分复用器件

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。     

Design,Fabrication，and Testing of Single Side Alignment of 16×0.8nm Arrayed Waveguide Grating

A novel design of 100GHzspaced 16channel arrayed-waveguide grating (AWG) based on silica-on-silicon chip is reported.AWG is achieved by adding a Ybranch to the AWG and arranging the input/output channel in a neat row,so the whole configuration can be aligned and packaged using only one fiberarray.This configuration can decrease the device’s size,enlarge the minimum radius of curvature,save time on polishing and alignment,and reduce the chip’s fabrication cost.     

单侧耦合16×0.8nm阵列波导光栅的设计、制备及测试

介绍了一种新型16通道、100GHz通道间隔的硅基二氧化硅单侧耦合阵列波导光栅(AWG).通过增加一个Y分支波导结构,并且将AWG的输入、输出波导等间距整齐排列,实现了仅用一个光纤阵列进行AWG器件的耦合封装.这种AWG的结构设计可以有效地减小器件尺寸,增加波导结构的弯曲半径,减少器件抛光及耦合时间,并降低器件成本.     

Multistage second-order microring-resonator filters with box-like spectral responses and relaxed fabrication tolerances

We demonstrate an optical filter based on multistage second-order microring resonators (MRs) with box-like spectral responses. Compared with single-stage high-order optical filters with the same number of MRs, the demonstrated structure has comparable performances in the aspects of passband flatness, rolling-off slope and insertion loss. Moreover, the architecture relaxes the fabrication tolerance, electrical wiring and tuning difficulty since there are only two MRs in each stage. We experimentally demonstrate this kind of optical filter with five stages, which shows a 3-dB bandwidth of ~17 GHz, a rolling-off slope of ~5 dB/GHz and an on-chip insertion loss of ~6 dB.     

光通信中波分复用器件的实现技术

介绍了宽带光通信中最关键的器件－波分复用器件的各种实现技术，包括级联型的介质薄膜滤波型、光纤布拉格光栅型、马赫－曾德干涉型和色散型的体光栅型、平面集成型。文章对这些实现技术的特点进行了详细的分析和比较，最后给出了结论和展望。     

Four-wave mixing reduction technique based on smart filter approach

This paper proposed a new technique to suppress the four-wave mixing (FWM) effect by using a smart filter technique. The behaviour of FWM and the performance of wavelength division multiplexing systems with 4 and 16 channels were simulated in the presence of the proposed technique. The simulation was also performed under different parameters such as input power, number of channels and channel spacing. The FWM power drastically decreases by 12 and 19 dB for the 4 and 16 channels, respectively, when the smart filter is used as compared with the conventional system. In terms of system performance, the suggested approach for 4 and 16 channels at the first channel offers low bit error rate (BER) values of 3.23 × 10^?23 and 1.7 × 10^?21, respectively. The smart filter with the channel spacing variation for the 4-channel system subsequently improved the BER value at the fourth channel. Results confirm that the smart filter approach is an active solution that can suppress the FWM effect in optical transmission systems.     

Proposal for a novel and simple WDM NRZ-DPSK system

A novel and simple non-return-to-zero differential phase shift keying (NRZ-DPSK) wavelength division multiplexing (WDM) system, which can simultaneously demultiplex and demodulate multiple wavelengths, is proposed and investigated in this paper.The phase-to-intensity demodulation principle is based on detuned filtering, which is achieved by using a single commercial array waveguide grating (AWG) in our scheme.By properly choosing appropriate AWG channels at the transmitter, the AWG at the receiver can act as both the demultiplexer and the demodulator of the DPSK signals.Simulations at 10, 20, and 40 Gbit/s show good flexibility and performance for the proposed system.     

从OFC 2003看平面光波导器件的发展动向

概述了2003年OFC会议上报道的平面光波导器件，着重介绍了平面光波导器件在新材料、新工艺、新结构方面的新进展和发展方向。     

WDM-PON中基于AWG的新型OVPN研究

在波分复用无源光网络(WDM-PON)中,提出了一种基于阵列波导光栅(AWG)的新型光虚拟专用网(OVPN)。OVPN采用环形结构,在不同光网络单元(ONU)之间使用波长通道直接通信,不仅保证了ONU之间通信的安全性,而且提高了网络生存性。分别从光功率损耗和系统误码率(BER)进行了数值分析,结果表明,本文结构不仅增加了通信的安全性,而且仅使用4个波长就能实现16个ONU的相互联接,从而节省了波长资源,且具有很强的抗串扰能力。