Theoretical study of all-optical RZ-OOK to NRZ-OOK format conversion in uniform FBG for mixed line-rate DWDM systems

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2015,（6）
• 页码范围: 9-13
• 页数: 5页
• 语种: 中文
• DOI: 10.3788/COL201513.060603

摘要

In this work we study all-optical multi-channel return-to-zero (RZ)-on-off keying (OOK) to nonreturn-to-zero (NRZ)-OOK format conversion in single uniform fiber Bragg grating (FBG) for mixed line-rate dense wavelength-division multiplexing systems using mathematical simulations.Forty and 20 Gbit/s RZ-OOK signals with 33％ and 50％ duty cycles are converted to NRZ-OOK signals in single uniform FBG with 21％ reflectivity.Impact of amplitude noise from FBG contrast profile on modulation format conversion efficiency is also studied.