Paper
29 November 2011 Cascaded microwave photonic filters with multiple infinite impulse responses based on wavelength conversion
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Proceedings Volume 8307, Passive Components and Fiber-Based Devices VIII; 83071D (2011) https://doi.org/10.1117/12.904344
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China
Abstract
A new cascaded microwave photonic filter consisting of two or more infinite impulse response (IIR) filters based on active loops. is presented. Owing to wavelength conversion, the interference between the modulated optical signals of different taps from different active loops can be avoided and the stable transmission characteristic of the cascaded filter can then be achieved. The cascaded filter can increase the free spectral range (FSR) and the Q value significently by designing the FSR differences of the IIR filters. The cascaded filter with two IIR filters is demonstrated, and the measured results of a high Q of 3338 and rejection ratio of about 40 dB are obtained. The tunability can also be realized.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Enming Xu, Fei Wang, Lipei Li, Yuan Yu, Xinliang Zhang, and Dexiu Huang "Cascaded microwave photonic filters with multiple infinite impulse responses based on wavelength conversion", Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83071D (29 November 2011); https://doi.org/10.1117/12.904344
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KEYWORDS
Infinite impulse response filters

Optical filters

Filtering (signal processing)

Active optics

Bandpass filters

Microwave photonic filters

Modulation

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