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 language | English |
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Pages (from-to) | 1527-1530 |
Number of pages | 4 |
Journal | IEEE Transactions on Microwave Theory and Techniques |
Volume | 45 |
Issue number | 8 PART 2 |
DOIs | |
Publication status | Published - Dec 1997 |
Keywords
- fiber bragg grating
- microwave photonics
- phased-array antennas