Design of ultrafast all-optical PolSK DMUX based on semiconductor optical amplifiers

作     者：Hassan Kaatuzian Hamed Ahmadi 

作者机构：Photonics Research Lab Electrical Engineering Department Amirkabir University of Technology 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2012年第10卷第9期

页      面：80-84页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0803[工学-光学工程] 

主　　题：Design of ultrafast all-optical PolSK DMUX based on semiconductor optical amplifiers DMUX SOA 

摘      要：A novel ultrahigh-speed all-optical demultiplexer （DMUX） with polarization-shift-keying （PolSK） modula- tion input signals is proposed. This design is based on four-wave mixing （FWM） in a semiconductor optical amplifier （SOA）. For analyzing each amplifier, we use finite-difference method （FDM） based on solution of the traveling wave coupled equations. Using numerical simulation, the all-optical DMUX is theoretically realized at 40 Gb/s. We also study the relation between optical confinement factor and thickness of active layer of the SOA section successfully, and investigate the increasing effect of confinement factor on the DMUX optical output power. With this work, the confinement factor is increased from 0.3 to 0.48, and as a result, the output power approximately twice of its initial value is achieved. Moreover, the effects of polarization dependence of SOA on the output performance of all-optical DMUX for PolSK signal are theoretically investigated in detail.