Tunable optical coupler controlled by optical gradient forces

King Y. Fong, Wolfram H P Pernice, Mo Li, Hong X. Tang

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


We demonstrate optical gradient force-tunable directional couplers in free-standing silicon nitride slot waveguides. Utilizing device geometries optimized for strong optomechanical interactions allows us to control the optical transmission without the aid of a cavity. Static, wideband tuning as well as low-power optical modulation is achieved.

Original languageEnglish (US)
Pages (from-to)15098-15108
Number of pages11
JournalOptics Express
Issue number16
StatePublished - Aug 1 2011


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