Abstract
We present the first demonstration of a broadband and continuously tunable integrated optical beamforming network (IOBFN) capable of providing continuously tunable true-time-delay up to 236 ps over the entire DVB-S band (10.7–12.75 GHz), realized with a CMOS compatible process. The tunable delays are based on reconfigurable optical ring resonators
in conjunction with a single optical sideband filter integrated on the same optical chip. The delays and filter responses are software programmable. Four tunable delay lines are integrated on a single chip and configured to feed a 16-element linear antenna array. The broadband beam steering capability of the proposed IOBFN is demonstrated by the squint-free antenna pattern generated from the measured RF amplitude and phase responses of the
optical delay line.
Original language | English |
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Pages (from-to) | 1145-1148 |
Number of pages | 4 |
Journal | IEEE photonics technology letters |
Volume | 25 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2013 |
Keywords
- Optical beamforming
- Optical ring resonators
- Phased array antenna
- Photonic signalprocessing
- Microwave photonics
- True time delay