Fiber Bragg-grating true time-delay systems: discrete-grating array 3-bit delay lines and chirped grating 6-bit delay lines

Anna Molony*, Lin Zhang, John A.R. Williams, Ian Bennion, C. Edge, J. Fells

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We describe wavelength-addressed 3- and 6-b fiberoptic true time-delay (TTD) lines implemented using ultravioletinscribed Bragg gratings. The 3-b delay line is fabricated from an array of discrete- and uniform-period Bragg gratings and a minimum time delay of 9.09 ps is selectable making it suitable for phased-array antenna (PAA) beamforming control at RF frequencies of up to about 3 GHz with 10° phase resolution. The 6-b delay line is fabricated using a chirped-period Bragg grating and is suitable for beamforming control at RF frequencies of up to ~ 48 GHz with 10° phase resolution. © 1997 IEEE.

Original languageEnglish
Pages (from-to)1527-1530
Number of pages4
JournalIEEE Transactions on Microwave Theory and Techniques
Volume45
Issue number8 PART 2
DOIs
Publication statusPublished - Dec 1997

Keywords

  • fiber bragg grating
  • microwave photonics
  • phased-array antennas

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