Highly efficient coupling from an optical fiber to a nanoscale silicon 
optomechanical cavity

Groeblacher, Simon; Hill, Jeff T.; Safavi-Naeini, Amir H.; Chan, Jasper; Painter, Oskar

doi:10.1063/1.4826924

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Highly efficient coupling from an optical fiber to a nanoscale silicon optomechanical cavity

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Groeblacher, Simon
Painter Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Painter, Oskar
Painter Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Groeblacher, S., Hill, J. T., Safavi-Naeini, A. H., Chan, J., & Painter, O. (2013). Highly efficient coupling from an optical fiber to a nanoscale silicon optomechanical cavity. APPLIED PHYSICS LETTERS, 103(18). doi:10.1063/1.4826924.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-66FD-C

Abstract

We demonstrate highly efficient coupling of light from an optical fiber to a silicon photonic crystal optomechanical cavity. The fiber-to-cavity coupling utilizes a compact ( L approximate to 25 mu m) intermediate adiabatic coupler. The optical coupling is lithographically controlled, broadband, relatively insensitive to fiber misalignment and allows for light to be transferred from an optical fiber to, in principle, any photonic chip with refractive index greater than that of the optical fiber. Here we demonstrate single-sided cavity coupling with a total fiber-to-cavity optical power coupling efficiency of 85%. (c) 2013 AIP Publishing LLC.