✦ LIBER ✦

A flexible and incoherent microwave photonic filter with a flat-top passband

✍ Scribed by Xianbin Yu; Xianmin Zhang; Hao Chi; Kangsheng Chen

Book ID: 102520090
Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 79 KB
Volume: 46
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.20922

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✦ Synopsis

A microwave filter realized by combing a recirculating filter based on a fiber Bragg grating (FBG) resonator and a matched two-arm delay line is presented. The proposed configuration can generate a flexible notch filter with a wide flat-top passband, which overcomes the limitations of the filter-transfer-function range of a positiveonly taps system. An incoherent system is employed which avoids the coherent-interference problem of photonic signal processors. The theoretical and experimental results reveal that more than 50% free spectral range can be flattened by this method, and the ripples in the passband are less than 0.5 dB.

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