TY - GEN
T1 - On-Chip Fully Reconfigurable Microwave Photonic Flat-Top Filter
AU - Yu, Zhenjie
AU - Hong, Xu
AU - Wang, Bin
AU - Zhang, Weifeng
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - We propose and experimentally demonstrate an on-chip fully reconfigurable microwave photonic flat-top filter based on cascaded ultrahigh-Q silicon racetrack micro-ring resonators (MRRs). The microwave photonic filter (MPF) is realized based on phase modulation to intensity modulation conversion, which maps the spectral response of the cascaded MRRs in the optical domain to the one of the resulted microwave filter in the electrical domain. To enable filter frequency tunability, two independent micro-heaters are placed on top of the two MRRs. By controlling the direct current (DC) voltage applied to the micro-heaters, a flat-top MPF is produced, whose center frequency and bandwidth can be flexibly tuned. A silicon-based ultrahigh-Q cascaded MRRs chip is designed, fabricated and evaluated. With the use of the chip, a flat-top MPF is experimentally demonstrated. The experimental results show that the MPF has a tunable center frequency from 4 to 24 GHz and a tunable bandwidth from 225 to 405 MHz. Thanks to its strong reconfigurability, the proposed integrated microwave photonic flat-top filter is promising to be widely used in multi-function microwave photonic signal processing systems.
AB - We propose and experimentally demonstrate an on-chip fully reconfigurable microwave photonic flat-top filter based on cascaded ultrahigh-Q silicon racetrack micro-ring resonators (MRRs). The microwave photonic filter (MPF) is realized based on phase modulation to intensity modulation conversion, which maps the spectral response of the cascaded MRRs in the optical domain to the one of the resulted microwave filter in the electrical domain. To enable filter frequency tunability, two independent micro-heaters are placed on top of the two MRRs. By controlling the direct current (DC) voltage applied to the micro-heaters, a flat-top MPF is produced, whose center frequency and bandwidth can be flexibly tuned. A silicon-based ultrahigh-Q cascaded MRRs chip is designed, fabricated and evaluated. With the use of the chip, a flat-top MPF is experimentally demonstrated. The experimental results show that the MPF has a tunable center frequency from 4 to 24 GHz and a tunable bandwidth from 225 to 405 MHz. Thanks to its strong reconfigurability, the proposed integrated microwave photonic flat-top filter is promising to be widely used in multi-function microwave photonic signal processing systems.
KW - cascaded racetrack micro-ring resonators
KW - flat-top filter
KW - microwave photonic filter
KW - silicon photonics
UR - http://www.scopus.com/inward/record.url?scp=85183293717&partnerID=8YFLogxK
U2 - 10.1109/ACP/POEM59049.2023.10368737
DO - 10.1109/ACP/POEM59049.2023.10368737
M3 - Conference contribution
AN - SCOPUS:85183293717
T3 - 2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
BT - 2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
Y2 - 4 November 2023 through 7 November 2023
ER -