TITLE

An in-plane, variable optical attenuator using a fluid-based tunable reflective interface

AUTHOR(S)
Lapsley, Michael Ian; Sz-Chin Steven Lin; Xiaole Mao; Huang, Tony Jun
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p083507
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We introduce an optofluidic based variable optical attenuator with high stability, high reliability, simple and inexpensive fabrication, and an attenuation performance comparable to commercial devices. A standard soft lithography process produces a single-layered polydimethylsiloxane (PDMS) microfluidic device integrated with optical fibers. By altering the refractive index of the fluid within the microchannel, we can control the reflectivity of the fluid/PDMS interface and thus achieve variable attenuation. Theoretical calculations are conducted based on Snell’s law of refraction and the Fresnel equations of reflection, and the calculated attenuation response matches well with experimental data.
ACCESSION #
43944827

 

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