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Reconfigurable Radiofrequency Photonic Filters Based on Soliton Microcombs

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Tobias Kippenberg, Camille Sophie Brès, Jianqi Hu, Junqiu Liu, Arslan Sajid Raja, Jijun He
2020

Abstract

We demonstrate soliton based radiofrequency filters using a 104 GHz Si3N4 microresonator. The filter passband frequencies are widely reconfigured via inherent soliton states of perfect soliton crystals and two-soliton microcombs, without any external pulse shaping.

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https://infoscience.epfl.ch/entities/publication/ffbfc528-c11d-416a-aeba-24b7628c4dda

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Related concepts (9)

Band-pass filter

A band-pass filter or bandpass filter (BPF) is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. In electronics and signal processing, a filter is usually a two-port circuit or device which removes frequency components of a signal (an alternating voltage or current). A band-pass filter allows through components in a specified band of frequencies, called its passband but blocks components with frequencies above or below this band.

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Analogue filters are a basic building block of signal processing much used in electronics. Amongst their many applications are the separation of an audio signal before application to bass, mid-range, and tweeter loudspeakers; the combining and later separation of multiple telephone conversations onto a single channel; the selection of a chosen radio station in a radio receiver and rejection of others.

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