24 April 2013 Rapid prototyping of a liquid-core waveguide in a microfluidic polydimethylsiloxane channel for optical sensing
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Abstract
This paper presents a simple fabrication method for a liquid-core optofluidic waveguide and demonstrates efficient light delivery and collection using optical fibers pressure-sealed into a polydimethylsiloxane matrix. Total optical loss as small as 3 dB from an input optical fiber with a core diameter of 9 μm to an output optical fiber with a core diameter of 62.5 μm connected one to another via a 2 cm long liquid-core optofluidic channel is achieved. This strategy allows rapid prototyping of optofluidic waveguides without requiring expensive microfabrication facilities and is suitable for applications that require an efficient optical sensing in a small liquid sample. As a demonstration, we examine the optical Faraday rotation of a fluid sample and identify advantages and limitations by comparison to a macroscopic system of similar length.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Fuchuan Song, Fuchuan Song, Daniela Pagliero, Daniela Pagliero, Carlos A. Meriles, Carlos A. Meriles, Sang-Woo Seo, Sang-Woo Seo, } "Rapid prototyping of a liquid-core waveguide in a microfluidic polydimethylsiloxane channel for optical sensing," Optical Engineering 52(4), 044404 (24 April 2013). https://doi.org/10.1117/1.OE.52.4.044404 . Submission:
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