Abstract
To the best of our knowledge, for the first time a programmable broadband rf transversal filter is proposed that operates on the principle of broadband optical spectral control implemented with a spatial light modulator input rf signal time delay and weight selection over a near-continuous signal space. Specifically, the filter uses a chirped fiber Bragg grating in combination with a two-dimensional digital micromirror device to enable a programmable rf filter. As a first step, a two-tap rf notch filter is demonstrated with a tuning range of 0.563–6.032 GHz with a 25-dB notch depth at test notch frequencies of 845 and 905 MHz. The proposed filter can find applications in diverse fields such as radar, communications, medicine, and test and measurement.
© 2004 Optical Society of America
Full Article | PDF ArticleMore Like This
Muzammil A. Arain and Nabeel A. Riza
Appl. Opt. 45(11) 2428-2436 (2006)
Nabeel A. Riza and Farzan N. Ghauri
Appl. Opt. 46(7) 1032-1039 (2007)
Nabeel A. Riza, Syed Azer Reza, and Philip J. Marraccini
Appl. Opt. 49(35) 6718-6725 (2010)