Meter-long chirped spiral Bragg gratings on ultra-low-loss SiN achieve 10 ns group delay over >10 nm bandwidth in 30 mm² footprint with 0.3 dB/m loss, enabling on-chip pulse compression of 1 GHz EOCs and CARS microscopy.
Kroushkov, J¨ urgen Bruns, Lars Zimmermann, Bernd Tillack, and Klaus Petermann
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2026 1verdicts
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Meter-long broadband chirped Bragg gratings for on-chip dispersion control and pulse shaping
Meter-long chirped spiral Bragg gratings on ultra-low-loss SiN achieve 10 ns group delay over >10 nm bandwidth in 30 mm² footprint with 0.3 dB/m loss, enabling on-chip pulse compression of 1 GHz EOCs and CARS microscopy.