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- Title
A flexible and incoherent microwave photonic filter with a flat-top passband.
- Authors
Xianbin Yu; Xianmin Zhang; Hao Chi; Kangsheng Chen
- Abstract
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 positive-only 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. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 132–134, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20922
- Subjects
MICROWAVES; PHOTONICS; ELECTRIC filters; MICROWAVE filters; RESONATORS
- Publication
Microwave & Optical Technology Letters, 2005, Vol 46, Issue 2, p132
- ISSN
0895-2477
- Publication type
Article
- DOI
10.1002/mop.20922