Broadband nanoelectromechanical phase shifting of light on a chip

Broadband nanoelectromechanical phase shifting of light on a chip

We demonstrate an optomechanical phase shifter. By electrostatically deflecting the nanofabricated mechanical structure, the effective index of a nearby waveguide is changed and the resulting phase shift is measured using an integrated Mach-Zehnder interferometer. Comparing to thermo-optical phase s...

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Bibliographic Details
Published in:Applied physics letters Vol. 104; no. 6
Main Authors: Poot, M., Tang, H. X.
Format: Journal Article
Language:English
Published: Melville American Institute of Physics 10-02-2014
Subjects:
Applied physics
Broadband
Mach-Zehnder interferometers
Phase shifters
Power consumption
Online Access:Get full text
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Description
Summary:We demonstrate an optomechanical phase shifter. By electrostatically deflecting the nanofabricated mechanical structure, the effective index of a nearby waveguide is changed and the resulting phase shift is measured using an integrated Mach-Zehnder interferometer. Comparing to thermo-optical phase shifters, our device does not consume power in static operation and also it can operate over large frequency, wavelength, and power ranges. Operation in the MHz range and sub-μs pulses is demonstrated.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4864257