Opto-VLSI based reconfigurable photonic RF bandpass filters
International Institute of Informatics and Systemics
Computing, Health and Science
Electron Science Research Institute
In this paper, the capability of Opto-VLSI processors to generate reconfigurable diffractive gratings is utilised to efficiently control the optical power distribution in photonic signal processing structures, achieving photonic RF bandpass filtering with arbitrary transfer functions. A new OptoVLSI- based photonic signal processing architecture that integrates fibre collimator arrays, photoreceiver arrays, and numerous active fibre Bragg grating cavities of different lengths, is presented. The Opto-VLSI technology provides a cost-efficient and reliable means for controlling the gains and i the ,input power of the Bragg cavities. Sirnulatiom results show that a reconfigured 32-cavity photonic filter structure can generate arbitrary bandpass transfer characteristics.