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High quality factor slow light modes and localized defect modes in a microgear photonic crystal ring

Xiyuan Lu, Andrew McClung, and Kartik Srinivasan

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Abstract

We demonstrate silicon nitride photonic crystal microrings supporting both high quality factor (Q ≈1 × 106) slow-light modes (slowing ratio ≈10) and high-Q (≈6 × 105) localized defect modes (volume < 5(λ/n)3). These microcavities are created through a gear-like modulation of the microring inner sidewall.

© 2022 The Author(s)

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