Coherence-Free High-Resolution RF/Microwave Photonic Bandpass Filter With High Skirt Selectivity and High Stopband Attenuation

被引：13
|
作者：
Chan, Erwin H. W. [1 ,2 ]
Minasian, Robert A. [1 ,2 ]
机构：
[1] Univ Sydney, Sch Elect & Informat Engn, Sydney, NSW 2006, Australia
[2] Univ Sydney, Inst Photon & Opt Sci, Sydney, NSW 2006, Australia
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2010年 / 28卷 / 11期
基金：
澳大利亚研究理事会;
关键词：
Bandpass filter; microwave filter; microwave photonics; optical signal processing; FIBER BRAGG GRATINGS; DELAY-LINE; TRANSVERSAL FILTER; LASER ARRAYS; MICROWAVE; MODULATOR;
D O I：
10.1109/JLT.2010.2047004
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new coherence-free high-resolution RF/microwave photonic bandpass filter with high skirt selectivity and high stopband attenuation is presented. It is based on a frequency shifting amplified recirculating delay line loop with a wavelength dependent element at the output. The amplitudes of the delayed optical signals at the output of the frequency shifting loop are windowed by a wavelength dependent element to improve the signal processor frequency response performance. The frequency shifting amplified recirculating delay line enables a large number of taps to be generated using a simple structure for high-resolution signal processing. It has no coherent interference and phase-induced intensity noise limitations, and can be inserted into conventional fibre optic links. Experimental results demonstrate a high-resolution bandpass filter having a high performance with a shape factor of only 3.1 and an extremely high stopband attenuation of over 70 dB.
引用
收藏
页码：1646 / 1651
页数：6
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