Toward chip-scale integration: microcomb-enabled ultra-broadband spectroscopy
Peer-Reviewed Publication
Updates every hour. Last Updated: 16-Dec-2025 12:11 ET (16-Dec-2025 17:11 GMT/UTC)
This work presents a miniaturized spectrometer spanning 5.2 THz across the full C-band by pairing a GHz-tunable laser with a stabilized Si3N4 soliton microcomb. The system achieves kHz-level frequency resolution and retrieves both amplitude and phase—resolving molecular absorption lines in a gas cell and extracting dispersion from integrated photonic devices. The demonstrated stability and precision, along with a simplified architecture, point toward fully integrated, chip-scale ultrabroadband spectroscopy in future implementations.
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