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Tunable all-optical microwave notch filter with a negative tap based on a semiconductor optical amplifier and a dispersive medium |
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| Authors: | Hongyan Fu Haiyan Ou Sailing He |
| Affiliation: | a Centre for Optical and Electromagnetic Research, Joint Research Center of Photonics of the Royal Institute of Technology (Sweden) and Zhejiang University, Zijingang Campus, Hangzhou 310058, China b Division of Electromagnetic Engineering, School of Electrical Engineering, Royal Institute of Technology, 10044 Stockholm, Sweden |
| Abstract: | A tunable all-optical microwave notch filter with a negative tap based on a semiconductor optical amplifier and a dispersive medium is demonstrated. A negative tap is realized through the cross gain modulation in the semiconductor optical amplifier. The free spectrum range of the notch filter can be tuned by tuning the wavelength of one of the two laser sources. The influence of the amplitude mismatch of the two lasers on the performance of the filter is analyzed. The present notch filter is easy to implement and cost-effective. |
| Keywords: | Microwave photonic filters Notch filter Radio-over-fiber systems |
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