Advanced fiber Bragg gratings for microwave photonics applications

Owing to the unique features of flexible spectral characteristics, low loss, light weight, compact footprint, and compatibility with other fiber-optic elements, fiber Bragg gratings (FBGs) have been extensively used in various microwave photonics systems. In this work, the recent development in employing advanced FBGs for various microwave photonics applications are reviewed, with emphasis on microwave arbitrary waveform generation and photonic microwave filtering. An innovative FBG sensor interrogation scheme using microwave photonics techniques is also presented.