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An analytical model is presented in this work for microwave photonic filters based on spectrum-sliced broadband light source and dispersion. Utilizing the assumption of incoherent operation and dispersion, the model is quite simple. Calculations based on the model are compared with measured results and a good agreement is seen. This model can be helpful in optimizing the design of spectrum-sliced...
We propose a continuously tunable high notch rejection microwave photonic filter which is based on a nonlinearly chirped fibre Bragg grating (NLCFBG). The filter response is caused by the dispersion induced by the NLCFBG and tunability is realized through changing the operating optical wavelength. Measured results demonstrating notch frequency tuning of 4.7 GHz with more than 45 dB notch rejection...
Instantaneous microwave frequency measurement with adjustable measurement range and resolution is demonstrated using a single non-linearly chirped fibre Bragg grating. Frequency measurement with good accuracy is experimentally realized with a compact setup.
A design of UV-photosensitive highly dispersive photonic crystal fiber (PCF) is proposed in this paper, in order to be used in slow light experiments to generate large true time delays for microwave applications. A dispersion greater than 2000 ps/nm/km over 3.2 nm (up to 25000 ps/nm/km) has been achieved near 1550 nm. The feasibility of optical delay processing using designed PCF is analysed for optical...
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