Integrated High-Speed Digital Optical True-Time-Delay Line with Embedded Electrically Switchable Gratings

Abstract

A monolithically integrated high-speed true-time delay line with embedded electrical ly switchable Bragg gratings was developed and characterized. Such a monolithically integrated device structure leads to a significantly reduced device size and allows a more precise RF phase control. A 40 PS reprogrammable optical true-time delay increment was achieved with a very fast switching speed of < 50 µ, S. © 2005 Society of Photo-Optical Instrumentation Engineers. [DOI: 10. 111 7/1.1906208] Subject terms: polymeric waveguides; electro-optics; holographic polymer dispersed liquid crystals; optical true-time-delay. Paper 050014L received Jan. 14, 2005; revised manuscript received Feb. 22, 2005; accepted for publication Feb. 24, 2005; appeared online Mar. 2, 2005; published online May 26, 2005.