Investigation of Fiber Bragg Gratings and Their Applications in Optical Network Modules

• Main Authors: Shey-Cheng Liu, 劉學政
• Other Authors: S.K. Liaw
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/03264979621010725924

碩士 === 國立臺灣科技大學 === 電子工程系 === 90 === In this thesis, first of all, we build up a fiber Bragg gratings (FBGs) writing system based on an Excimer laser and related optics alignment system. Secondly, we theoretically analyze the FBGs using couple-mode theory. We discuss some fabricating parameters, which may have important influence in FBG fabrication. Using various phase masks, we fabricate short-period FBG, apodized FBG and chirped FBG. The reflectivitiy of short-period FBG is over 99.9%. The spectrum of FBG could be modified to a “flattened shape” by using laser-scanning technology. For FBG applications, we investigate some FBG-based optical networks modules such as two-channel optical add-drop multiplexer (OADM), optical cross-connect (OXC) device and gain-equalized optical amplifier. Their characteristics are experimentally measured and discussed. Finally, we conclude our works and suggested further works.