Titre du document / Document title

Demonstration of a linear optical true-time delay device by use of a microelectromechanical mirror array

Auteur(s) / Author(s)

RADER Amber ; ANDERSON Betty Lise ;

Résumé / Abstract

We present the design and proof-of-concept demonstration of an optical device capable of producing true-time delay(s) (TTD)(s) for phased array antennas. This TTD device uses a free-space approach consisting of a single microelectromechanical systems (MEMS) mirror array in a multiple reflection spherical mirror configuration based on the White cell. Divergence is avoided by periodic refocusing by the mirrors. By using the MEMS mirror to switch between paths of different lengths, time delays are generated. Six different delays in 1-ns increments were demonstrated by using the Texas Instruments Digital Micromirror Device® as the switching element. Losses of 1.6 to 5.2 dB per bounce and crosstalk of -27 dB were also measured, both resulting primarily from diffraction from holes in each pixel and the inter-pixel gaps of the MEMS.

Revue / Journal Title

Applied optics   ISSN 0003-6935   CODEN APOPAI 

Source / Source

2003, vol. 42, n^o8, pp. 1409-1416 [8 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Optical Society of America, Washington, DC, ETATS-UNIS  (1962) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 6309, 35400010395227.0010