Compact tunable microwave filter using retroreflective acousto-optic filtering and delay controls.
Programmable broadband rf filters are demonstrated using a compact retroreflective optical design with an acousto-optic tunable filter and a chirped fiber Bragg grating. This design enables fast 34 micros domain analog-mode control of rf filter time delays and weights. Two proof-of-concept filters are demonstrated including a two-tap notch filter with >35 dB notch depth and a four-tap bandpass filter. Both filters have 2-8 GHz tunability and a 34 micros reset time.
Riza
Nabeel A
NA
Photonic Information Processing Systems Laboratory, College of Optics/Center for Research and Education in Optics and Lasers, University of Central Florida, Orlando 32816-2700, USA. riza@creol.ucf.edu
Ghauri
Farzan N
FN