@inproceedings{6af5cfff8b6f42b387b6df5f246a2d68,
title = "On-Chip Pseudo-Random Microwave Waveform Generation Based on Random-Sampled Subwavelength Grating Waveguide Bragg Grating",
abstract = "We propose and experimentally demonstrate an integrated photonic approach for generating broadband pseudo-random microwave waveforms using random-sampled subwavelength grating waveguide Bragg gratings (RS SWG WBGs) implemented on a silicon-on-insulator (SOI) platform. Introducing randomness in the sampling structure results in randomness in the reflection spectra, which shape a temporally stretched femtosecond light pulse through wavelength-to-time (WTT) mapping using dispersion compensating fiber (DCF). Experiments show a pseudo-random electrical waveform with a temporal duration of 5.12 ns and a bandwidth of 50.85 GHz, yielding a time-bandwidth product (TBWP) of 260. The pseudo-random waveform can be compressed from 5.12 ns to 19.6 ps, corresponding to a pulse compression ratio (PCR) of 261, in good agreement with the TBWP.",
keywords = "Bragg grating, microwave photonics, silicon photonics, subwavelength grating waveguide",
author = "Xi Wang and Yuxun Tu and Zhuoran Wang and Chen, \{Lawrence R.\}",
note = "Publisher Copyright: {\textcopyright} 2026 IEEE.; 2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium, IMS RFSA 2026 ; Conference date: 07-06-2026 Through 12-06-2026",
year = "2026",
doi = "10.1109/IMSRFSA70221.2026.11624227",
language = "English",
series = "2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium, IMS RFSA 2026",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "317--320",
booktitle = "2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium, IMS RFSA 2026",
address = "United States",
}