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Optical Engineering

Optical wavelength tuning via actuation of a fluidic grating
Author(s): Raphael A. Guerrero; Sarah Jaye C. Oliva
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Paper Abstract

Deformable optical elements may be physically altered through fluid displacement. We imprint a grating surface onto an elastomeric membrane by soft lithography. The membrane is installed as a flexible wall of a sealed fluidic chamber. Injection of excess fluid into the chamber induces expansion of the membrane, effectively varying the groove spacing of the imprinted grating. In transmission experiments using a broadband light source, we are able to achieve a 127.2-nm shift in peak wavelength with an injected fluid volume of 0.56 ml. A paraboloid model of the change in curvature of the grating during expansion accurately describes our experimental results.

Paper Details

Date Published: 20 February 2014
PDF: 6 pages
Opt. Eng. 53(2) 025104 doi: 10.1117/1.OE.53.2.025104
Published in: Optical Engineering Volume 53, Issue 2
Show Author Affiliations
Raphael A. Guerrero, Ateneo de Manila Univ. (Philippines)
Sarah Jaye C. Oliva, Ateneo de Manila Univ. (Philippines)

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