Silicon-on-sapphire pillar waveguides for Mid-IR supercontinuum generation

Neetesh Singh, Darren D. Hudson, Benjamin J. Eggleton

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


We propose pillar integrated silicon waveguides to exploit the entire transparent window of silicon. These geometries posses a broad and flat dispersion (from 2 to 6 μm) with four zero dispersion wavelengths. We calculate supercontinuum generation spanning over two octaves (2 to >8 μm) with long wavelengths interacting weakly with the lossy substrate. These structures have higher mode confinement in the silicon - away from the substrate, which makes them substrate independent and are promising for exploring new nonlinear phenomena and highly sensitive molecular sensing over the entire silicon's transparency range.

Original languageEnglish
Pages (from-to)17345-17354
Number of pages10
JournalOptics Express
Issue number13
Publication statusPublished - 29 Jun 2015
Externally publishedYes


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