Title :
Parallel-stage-based reconfigurable optical add-drop multiplexer for WDM optical transport networks
Author :
Huang, Qirui ; Luo, Fengguang ; Wang, Zhuo ; Xia, Ming ; Hu, Jia ; Yuan, Jing ; Shen, Guang
Author_Institution :
Sch. of Optoelectron. Sci. & Eng., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
This letter proposes a simple and flexible reconfigurable optical add-drop multiplexer (ROADM) based on parallel-stage configuration using Mach-Zehnder-based fiber gratings, 1times2 optical switches, and Y-model combiners. The proposed ROADM with four-stage parallel configuration is designed and experimentally investigated to show its performance in full wavelength selection and advantages in reducing the discrepancy of the insertion loss between channels and upgrading
Keywords :
Mach-Zehnder interferometers; diffraction gratings; multiplexing equipment; optical communication equipment; optical design techniques; optical fibre networks; optical fibres; optical switches; wavelength division multiplexing; Mach-Zehnder-based fiber gratings; WDM optical transport networks; Y-model combiners; insertion loss; optical switch; reconfigurable optical add-drop multiplexer; Bragg gratings; Fiber gratings; Insertion loss; Optical attenuators; Optical crosstalk; Optical fiber networks; Optical losses; Optical switches; WDM networks; Wavelength division multiplexing; Fiber Bragg grating (FBG); optical crosstalk; optical switches (OSWs); wavelength-division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.881229
