Time-domain measurement of optical transport in silicon micro-ring resonators

Wolfram H.P. Pernice, Mo Li, Hong X. Tang

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


We perform time-domain measurements of optical transport dynamics in silicon nano-photonic devices. Using pulsed optical excitation the thermal and carrier induced optical nonlinearities of micro-ring resonators are investigated, allowing for identification of their individual contributions. Under pulsed excitation build-up of free carriers and heat in the waveguides leads to a beating oscillation of the cavity resonance frequency. When employing a burst of pulse trains shorter than the carrier life-time, the slower heating effect can be separated from the faster carrier effect. Our scheme provides a convenient way to thermally stabilize optical resonators for high-power time-domain applications and nonlinear optical conversion.

Original languageEnglish (US)
Pages (from-to)18438-18452
Number of pages15
JournalOptics Express
Issue number17
StatePublished - Aug 16 2010


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