Characterization of a ferroelectric liquid crystal-based time delay unit for phased array antenna applications

Nabeel A. Riza; Nicholas Madamopoulos

doi:10.1109/50.596953

Characterization of a ferroelectric liquid crystal-based time delay unit for phased array antenna applications

Nabeel A. Riza
, Nicholas Madamopoulos

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

Abstract

An experimental demonstration of a photonic time delay unit (PTDU) based on ferroelectric liquid crystal devices and Thompson polarization beamsplitters (TBS's) is presented. High signal-to-noise ratios (SNR's) (>96 dB) and optical polarization extinction ratios (ER, ∼40 dB) are demonstrated for the PTDU using an active noise filter technique. Using a 5 V peak square wave switch drive signal, a 70 μs switching speed is demonstrated for this PTDU that can be used in fast (e.g., 5000 beam/s) beam scanning phased array systems. A shorter switching speed of 35 μs is also observed using a high 15 V peak transitional voltage driving signal.

Original language	English
Pages (from-to)	1088-1093
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	15
Issue number	7
DOIs	https://doi.org/10.1109/50.596953
Publication status	Published - Jul 1997
Externally published	Yes

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title = "Characterization of a ferroelectric liquid crystal-based time delay unit for phased array antenna applications",

abstract = "An experimental demonstration of a photonic time delay unit (PTDU) based on ferroelectric liquid crystal devices and Thompson polarization beamsplitters (TBS's) is presented. High signal-to-noise ratios (SNR's) (>96 dB) and optical polarization extinction ratios (ER, ∼40 dB) are demonstrated for the PTDU using an active noise filter technique. Using a 5 V peak square wave switch drive signal, a 70 μs switching speed is demonstrated for this PTDU that can be used in fast (e.g., 5000 beam/s) beam scanning phased array systems. A shorter switching speed of 35 μs is also observed using a high 15 V peak transitional voltage driving signal.",

author = "Riza, \{Nabeel A.\} and Nicholas Madamopoulos",

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N2 - An experimental demonstration of a photonic time delay unit (PTDU) based on ferroelectric liquid crystal devices and Thompson polarization beamsplitters (TBS's) is presented. High signal-to-noise ratios (SNR's) (>96 dB) and optical polarization extinction ratios (ER, ∼40 dB) are demonstrated for the PTDU using an active noise filter technique. Using a 5 V peak square wave switch drive signal, a 70 μs switching speed is demonstrated for this PTDU that can be used in fast (e.g., 5000 beam/s) beam scanning phased array systems. A shorter switching speed of 35 μs is also observed using a high 15 V peak transitional voltage driving signal.

AB - An experimental demonstration of a photonic time delay unit (PTDU) based on ferroelectric liquid crystal devices and Thompson polarization beamsplitters (TBS's) is presented. High signal-to-noise ratios (SNR's) (>96 dB) and optical polarization extinction ratios (ER, ∼40 dB) are demonstrated for the PTDU using an active noise filter technique. Using a 5 V peak square wave switch drive signal, a 70 μs switching speed is demonstrated for this PTDU that can be used in fast (e.g., 5000 beam/s) beam scanning phased array systems. A shorter switching speed of 35 μs is also observed using a high 15 V peak transitional voltage driving signal.

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JF - Journal of Lightwave Technology

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ER -

Characterization of a ferroelectric liquid crystal-based time delay unit for phased array antenna applications

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