Bragg gratings achieve 170 to 62 fs pulse compression in silicon nitride, implying significant bandwidth potential.
We demonstrate post-compression of ultrashort pulses from 170 to 62 fs using chirped Bragg gratings in a silicon nitride-on-insulator platform with 164 nm reflection bandwidth. To our knowledge, this represents a record large reflection bandwidth and the first sub-100 fs ultrashort pulses generated using apodizing chirped Bragg gratings on a silicon chip.
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Sinobad et al. (2025) studied this question.
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