Title

Switchless hybrid analog-digital variable optical delay line for radio frequency signal processing

Authors

Authors

N. A. Riza

Abstract

The author proposes the design of a novel switchless variable optical delay line (VFODL) for radio frequency (rf) signals that combines an analog mode VFODL with a discrete-state VFODL. This hybrid VFODL proposes the use of a laser with smart, fast (e.g., 1 ns) wavelength tuning in combination with flat-top passband design spatially and temporally dispersive optical elements to simultaneously provide both long and short time delays, thus finely covering a wide nanoseconds delay range. An example design indicates a 9.6-ns time delay range with 6-ps increments, giving 1600 independent delays using a no-moving-parts signal-processing structure. VFODL applications include rf antenna array processing, radar testing, and precision electrical timing systems. (C) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3101455]

Journal Title

Optical Engineering

Volume

48

Issue/Number

3

Publication Date

1-1-2009

Document Type

Article

WOS Identifier

WOS:000265641300024

ISSN

0091-3286

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