Low-distortion long variable delay of linear frequency modulated waveforms

Yonatan Stern; Ofir Klinger; Thomas Schneider; Kambiz Jamshidi; Avi Peer; Avi Zadok

doi:10.1109/JPHOT.2012.2191947

Low-distortion long variable delay of linear frequency modulated waveforms

Yonatan Stern, Ofir Klinger, Thomas Schneider, Kambiz Jamshidi, Avi Peer, Avi Zadok

Research output: Contribution to journal › Article › peer-review

Abstract

The impulse response of 500-MHz-wide, linear frequency modulated (LFM) waveforms is delayed and advanced by ±50 ns using microwave-photonic processing. The delays are obtained through the application of a variable frequency offset to a single optical sideband using an acousto-optic modulator. The peak-to-sidelobe ratio (PSLR) and integrated sidelobe ratio (ISLR) of the processed impulse response functions are higher than 18 and 20 dB, respectively, for the entire range of delay and advancement. The ISLR is 14 dB better than that of corresponding previous demonstrations. The results provide, for the first time, 100-ns microwave-photonic delay variations of practical radar signals with a high fidelity that complies with application standards. The method is applicable to LFM waveforms of arbitrary bandwidths and central radio frequencies.

Original language	English
Article number	6174423
Pages (from-to)	499-503
Number of pages	5
Journal	IEEE Photonics Journal
Volume	4
Issue number	2
DOIs	https://doi.org/10.1109/JPHOT.2012.2191947
State	Published - 2012
Externally published	Yes

Keywords

Linear frequency modulated (LFM) waveforms
microwave photonics (MWPs)
optical beam forming
variable optical delay

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/JPHOT.2012.2191947

Cite this

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abstract = "The impulse response of 500-MHz-wide, linear frequency modulated (LFM) waveforms is delayed and advanced by ±50 ns using microwave-photonic processing. The delays are obtained through the application of a variable frequency offset to a single optical sideband using an acousto-optic modulator. The peak-to-sidelobe ratio (PSLR) and integrated sidelobe ratio (ISLR) of the processed impulse response functions are higher than 18 and 20 dB, respectively, for the entire range of delay and advancement. The ISLR is 14 dB better than that of corresponding previous demonstrations. The results provide, for the first time, 100-ns microwave-photonic delay variations of practical radar signals with a high fidelity that complies with application standards. The method is applicable to LFM waveforms of arbitrary bandwidths and central radio frequencies.",

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AU - Stern, Yonatan

AU - Klinger, Ofir

AU - Schneider, Thomas

AU - Jamshidi, Kambiz

AU - Peer, Avi

AU - Zadok, Avi

PY - 2012

Y1 - 2012

N2 - The impulse response of 500-MHz-wide, linear frequency modulated (LFM) waveforms is delayed and advanced by ±50 ns using microwave-photonic processing. The delays are obtained through the application of a variable frequency offset to a single optical sideband using an acousto-optic modulator. The peak-to-sidelobe ratio (PSLR) and integrated sidelobe ratio (ISLR) of the processed impulse response functions are higher than 18 and 20 dB, respectively, for the entire range of delay and advancement. The ISLR is 14 dB better than that of corresponding previous demonstrations. The results provide, for the first time, 100-ns microwave-photonic delay variations of practical radar signals with a high fidelity that complies with application standards. The method is applicable to LFM waveforms of arbitrary bandwidths and central radio frequencies.

AB - The impulse response of 500-MHz-wide, linear frequency modulated (LFM) waveforms is delayed and advanced by ±50 ns using microwave-photonic processing. The delays are obtained through the application of a variable frequency offset to a single optical sideband using an acousto-optic modulator. The peak-to-sidelobe ratio (PSLR) and integrated sidelobe ratio (ISLR) of the processed impulse response functions are higher than 18 and 20 dB, respectively, for the entire range of delay and advancement. The ISLR is 14 dB better than that of corresponding previous demonstrations. The results provide, for the first time, 100-ns microwave-photonic delay variations of practical radar signals with a high fidelity that complies with application standards. The method is applicable to LFM waveforms of arbitrary bandwidths and central radio frequencies.

KW - Linear frequency modulated (LFM) waveforms

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Low-distortion long variable delay of linear frequency modulated waveforms

Abstract

Keywords

ASJC Scopus subject areas

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