Long dynamic range spread spectrum optical domain reflectometer

• 作者: ZHANG Fang ZHANG Hongling QI Yuefeng LI Wei
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2021,（11）
• 所属期刊栏目: Devices
• 页码范围: 651-655
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11801-021-1050-1

摘要

The performance of an optical time domain reflectometer(OTDR)is significantly improved using spread spectrum technology.The concept of spread spectrum OTDR(SSOTDR)is proposed,the theoretical basis and simulation results of the new method are given,and the problem of direct application of bipolar spread spectrum codes to OTDR and de-spreading in the optical domain are solved.The simulation results show the feasibility of the SSOTDR,which exhibits better dynamic range reported to date for a practical long-haul OTDR system without using conventional average tech-nique.