Fiber Bragg Gratings for Microwave Photonics Applications
Microwave photonics is a field that studies the interaction between microwave and optical waves for the generation, distribution, control, and processing of microwave signals in the optical domain [1–3]. Various photonic components are needed in microwave photonic systems, such as optical sources, optical amplifiers, dispersive elements, modulators, optical filters, and photodetectors (PDs) to implement these functions. In the last few decades, the techniques developed for optical communications at ~1550 nm have made the cost of photonic devices at this wavelength band greatly reduced. Thus, it is natural that microwave photonic systems are designed to operate in this wavelength band.