Complex coefficient microwave photonic filter based on multiwavelength phase modulation and PM-to-AM conversion

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• 作者：Xinhuan Feng ; Ruichen Tao ; Yuan Cao ; Zhaohui Li ; Bai-ou Guan
• 关键词：Multiwavelength fiber lasers ; Microwave photonics filters ; Phase modulation
• 刊名：Optics and Laser Technology
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：45
• 期：Complete
• 页码：110-113
• 全文大小：421 K

文摘

An incoherent complex coefficient microwave photonic filter based on multiwavelength phase modulation and a high birefringence fiber loop mirror (Hi-Bi FLM) is proposed and successfully demonstrated. A multiwavelength erbium-doped fiber laser (EDFL) provides multiple taps, while the Hi-Bi FLM performs phase modulation (PM) to amplitude modulation (AM) conversion. Taps with positive, negative, or complex coefficients can be generated by control of the multiwavelength input at different positions of the Hi-Bi FLM response with positive and negative slopes. As a result, microwave photonic filter with positive, negative, or complex coefficients has been achieved by adjustment of the EDFL output.