Tunable multi-wavelength microwave photonic filter based on the superposition of transfer functions

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（12）
• 页码范围: 9-12
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.120601

摘要

A microwave photonic filter (MPF) with reconfigurability and tunability resulting from the superposition of the transfer functions is proposed.Based on the Vernier effect between the optical frequency combs and the periodic optical filters,each comb line can be mapped into a sub-filter in the electronic field.The sub-filters are superposed to obtain the total transfer function of the MPF.By manipulating a few comb lines,we can reconfigure the passband shape,tune the bandwidth,and adjust the center frequency independently.Experiments verify that the bandwidth can be tuned from 224.8 to 674.3 MHz,and that the center frequencv ranges from 1 to 4 GHz.