Abstract
We demonstrate significantly improved performance of a microwave true time delay line based on an integrated optical frequency comb source. The broadband micro-comb (over 100 nm wide) features a record low free spectral range (FSR) of 49 GHz, resulting in an unprecedented record high channel number (81 over the C band)—the highest number of channels for an integrated comb source used for microwave signal processing. We theoretically analyze the performance of a phased array antenna and show that this large channel count results in a high angular resolution and wide beam-steering tunable range. This demonstrates the feasibility of our approach as a competitive solution toward implementing integrated photonic true time delays in radar and communications systems.
Original language | English |
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Pages (from-to) | B30-B36 |
Number of pages | 7 |
Journal | Photonics Research |
Volume | 6 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 May 2018 |
Externally published | Yes |