Showing papers by "Robert A. Minasian published in 2007"
TL;DR: In this paper, a microwave photonic filter structure that can achieve a high factor, high stopband rejection, and high skirt selectivity bandpass filter response simultaneously is presented, which is based on reflecting the signal back into a single amplified optical recirculating delay line.
Abstract: A new microwave photonic filter structure that can achieve a high factor, high stopband rejection, and high skirt selectivity bandpass filter response simultaneously is presented. It is based on reflecting the signal back into a single amplified optical recirculating delay line and comprises coherent summation of the multiple signals that constitute each tap and incoherent summation of the successive taps. This introduces a new class of filter operation and effectively enables the realization of a higher order bandpass filter characteristic in a very simple structure. Experimental results are presented that demonstrate a multiple-tap high- bandpass filter response that also displays high stopband rejection level and high skirt selectivity.
21 citations
TL;DR: In this article, a microwave photonic notch filter structure is presented, which is based on a remodulation concept, in which the second modulation is frequency selective and shows a sharp narrow notch with a notch 6 dB bandwidth of 63 kHz and a notch depth of 44 dB, a wide passband, and coherence free operation with no phase induced intensity noise.
Abstract: A new microwave photonic notch filter structure is presented. It is based on a remodulation concept, in which the second modulation is frequency selective. Results are presented for the new structure, which show a sharp narrow notch with a notch 6 dB bandwidth of 63 kHz and a notch depth of 44 dB, a wide passband, and coherence-free operation with no phase induced intensity noise.
7 citations
06 May 2007
TL;DR: This overview presents recent new methods in wideband signal processing using optical delay lines, including state-of-the-art results, and capabilities for high-resolution processing.
Abstract: Photonic signal processing offers a new, powerful paradigm for processing high bandwidth signals. This overview presents recent new methods in wideband signal processing using optical delay lines, including state-of-the-art results, and capabilities for high-resolution processing.
1 citations
01 Jan 2007
TL;DR: In this paper, a microwave photonic filter structure that can achieve a high Q factor, high stopband rejection, and high skirt selectivity bandpass filter response simultaneously is presented, based on reflecting the signal back into a single amplified optical recirculating delay line.
Abstract: A new microwave photonic filter structure that can achieve a high Q factor, high stopband rejection, and high skirt selectivity bandpass filter response simultaneously is presented. It is based on reflecting the signal back into a single amplified optical recirculating delay line and comprises coherent summation of the multiple signals that constitute each tap and incoherent summation of the successive taps. This introduces a new class of filter operation and effectively enables the realization of a higher order bandpass filter characteristic in a very simple structure. Ex- perimental results are presented that demonstrate a multiple-tap high-Q bandpass filter response that also displays high stopband rejection level and high skirt selectivity.
06 May 2007
TL;DR: In this paper, a new topology for a high-Q processor with extremely low phase noise generation is presented, which is based on a frequency-shifting loop with a large phase noise reduction of 41 dB.
Abstract: A new topology for a high-Q processor with extremely low phase noise generation is presented. It is based on a frequency-shifting loop. Results show a high-Q response with a large phase noise reduction of 41 dB.
TL;DR: Experimental results are presented which demonstrate a high-order FIR photonic filter realization comprising 39 taps.