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.

Publication Date

7-1-1997

Publication Title

Journal of Lightwave Technology

Volume

15

Issue

7

Number of Pages

1088-1093

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/50.596953

Socpus ID

0031177534 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0031177534

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