The Characteristic Of Temperature And Athermal Polymer Arrayed Waveguide Grating Multiplexer

Human society is entering into an information age powered by rapidly evolving technologies in areas of communications electronics,optoelectronics and computing. As the rapid increase of global communication services, it will be a certain tendency of the broadband integrated services network, which is of the increase of speed and the enlargement of capacity in modern communication networks. The application of the dense wavelength division multiplexing (DWDM) technology could solve the problem about the massive increase of speed and the enlargement of capacity broadband information. The all-optical network bases on DWDM system is full of agility and environmental stability, and perfectly fit into optical fiber communication systems in the future. Therefore, the DWDM technology has already become one of the most important technologies in optical fiber communication. Recently, considerable attention and great efforts have been focused on the development of arrayed waveguide grating (AWG) devices that based on the DWDM technology. AWG devices can offer some basic functions including multiplexing, demultiplexing, wavelength routing and wavelength detecting, and possesses some advantages, such as easy optical integrating, narrow wavelength spacing, much more signal channels and compact structure. Also, AWG devices are the most parts of optical add/drop multiplexer (OADMs) and optical cross connectors (OXC) modules in optical fiber network. Polymer AWG's excellent particular features, such as low cost, simple fabrication process, low propagation loss, small birefringence and easy control of the refractive index, evoke the researchers'interest.The main contents are as follows:1. The research history and current situation about AWG are reviewed. This thesis expounds the advantages of polymer AWG over inorganic AWG, and put forward the need of studying polymer AWG.2.Some principle theories and academic formulae about AWG were given out. And some important characteristics about AWG are discussed and analyzed.3.Theoretic basis for following parameter optimization and layout design.4.When AWG devices are fabricated by the chemical etching and the steam-redissolution technique, usually smooth quasi-trapezoid core cross-sections but originally designed rectangular ones in experiment. The manufacturing errors can result in the shift of the transmission spectrum, and lead to the increase of the crosstalk compared with the device originally designed with exact rectangular core cross-sections. In order to eliminate the bad influence of manufacturing errors on the transmission characteristics, we perform the parameter optimization and the structural design of the AWG device with smooth quasi-trapezoid core cross-sections5. Analysis of the temperature characteristics silica-base polymer AWG and optimization of athermal All-polymer AWG, at last, analysis of the temperature characteristics silica-base SiO2 AWG and optimization of athermal arrayed waveguide grating with silica/polymer hybrid materimals.The research about polymer AWG is being in the ascendant in the worldwide. Our following research will focus on further optimizing the device structure, synthesizing some lower loss polymer materials, reducing manufacturing errors, improving manufacturing precision. We are devoting ourselves to design the polymer AWG device with low loss, low crosstalk, low polarization-independence and high thermal stability.