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Related Experiment Video

Updated: Jun 29, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Dual-polarization RF channelizer based on microcombs.

Weiwei Han, Zhihui Liu, Yifu Xu

|April 4, 2024

Summary

This summary is machine-generated.

We developed a dual-polarization radio frequency (RF) channelizer using microcombs and micro-ring resonators. This technology doubles RF instantaneous bandwidth for digital-compatible signal detection.

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Last Updated: Jun 29, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Published on: September 5, 2019

Area of Science:

Photonics
Optical Engineering
Radio Frequency Technology

Background:

Microcombs offer a versatile platform for optical signal generation.
Radio frequency (RF) channelization is crucial for modern signal processing.
Integrated photonic devices enable miniaturization and enhanced performance.

Purpose of the Study:

To report a novel dual-polarization RF channelizer based on microcombs.
To demonstrate enhanced RF spectral slicing using the Vernier effect.
To enable compact, high-performance photonic RF receivers.

Main Methods:

Utilizing two high-Q micro-ring resonators (MRRs) with tailored free spectral ranges (FSRs).
Employing an active MRR for soliton crystal microcomb generation and a passive MRR for dual-polarization spectral filtering.
Leveraging the Vernier effect for wideband RF spectrum channelization.

Main Results:

Achieved 20 channels per polarization using 20 microcomb lines with a ~49 GHz FSR.
Demonstrated high RF spectral slicing resolutions of 144 MHz (TE) and 163 MHz (TM).
Obtained instantaneous RF operation bandwidths of 3.1 GHz (TE) and 2.2 GHz (TM).

Conclusions:

The dual-polarization microcomb channelizer doubles the number of spectral segments.
This approach facilitates monolithically integrated photonic RF receivers with reduced complexity and size.
The technology offers unprecedented performance for wide RF applications requiring digital-compatible signal detection.