Programmable Broadband Radio-Frequency Transversal Filter with Compact Fiber-Optics and Digital Microelectromechanical System-Based Optical Spectral Control
Applied Optics, Vol. 43, Issue 15, pp. 3159-3165 (2004)
http://dx.doi.org/10.1364/AO.43.003159
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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
OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(120.2440) Instrumentation, measurement, and metrology : Filters
Citation
Nabeel A. Riza and Muzammil A. Arain, "Programmable Broadband Radio-Frequency Transversal Filter with Compact Fiber-Optics and Digital Microelectromechanical System-Based Optical Spectral Control," Appl. Opt. 43, 3159-3165 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-15-3159
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