A group-delay-unit-based integrated silicon photonic integrated circuit (PIC) is employed as a reconfigurable analog radio frequency decoder, which provides a real-time temporal and spectral analysis of any arbitrary multi-tone signal in the micro- and mm-wave range. The circuit is based on cascaded Mach-Zehnder interferometer embedded silicon microring resonators as variable delay units. The temporal decoding of the multi-tone input signal is demonstrated by tuning the signal with respect to the ring resonator delay and resonance. A one-to-one conformal time-to-frequency mapping provides real-time spectral decoding of the signal under test without additional digital signal processing. The idea is validated by several experimental results with single-tone and two-tone input signals in a compact, low-power, silicon PIC. The proposed real-time temporal analog frequency decoder may be very intriguing for high-speed, low-latency wireless applications, such as autonomous driving and 6G.
Kostenfreier Zugang
Open Access Gold
Themenbereich der Metrologie
Elektrizität und Magnetismus
Zitierung
Singh, K., Das, R., Venugopalan, A., De, S., Hosni, M. I., Zhou, L., & Schneider, T. (2023). Real-time reconfigurable on-chip photonic frequency decoder. Optics Express, 31(19), 30160–30170. https://doi.org/10.1364/OE.494674
