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  Tailoring the transmission of liquid-core waveguides for wavelength filtering on a chip

Hakanson, U., Measor, P., Yin, D., Lunt, E., Hawkins, A. R., Sandoghdar, V., et al. (2007). Tailoring the transmission of liquid-core waveguides for wavelength filtering on a chip. In SILICON PHOTONICS II. 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA: SPIE-INT SOC OPTICAL ENGINEERING. doi:10.1117/12.703156.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-9B46-1 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-9B47-0
Genre: Conference Paper

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Hakanson, U.1, Author
Measor, P.1, Author
Yin, D.1, Author
Lunt, E.1, Author
Hawkins, A. R.1, Author
Sandoghdar, Vahid2, Author           
Schmidt, H.1, Author
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: The combination of integrated optics and microfluidics in planar optofluidic devices carries the potential for novel compact and ultra-sensitive detection in liquid and gaseous media. Single molecule fluorescence detection sensitivity in planar beam geometry was recently demonstrated in liquid-core antiresonant reflecting optical waveguides (ARROWs) fabricated on a silicon chip. A key component of a fully integrated single-molecule sensor is the addition of an optical filtering capability to separate excitation beams from much weaker generated fluorescence or scattering signals. This capability will eventually allow for integration of the photodetector on the same chip as the optofluidic sensing part. It has been theoretically shown that the wavelength-dependent transmission of liquid-core ARROWs can be tailored to efficiently separate excitation and fluorescence. Here, we present the wavelength dependent transmission of air-core ARROW waveguides, using a highly nonlinear photonic crystal fiber to generate a broadband excitation spectrum, and the design of liquid-core ARROW waveguides with integrated filter function. The air-core waveguide loss shows pronounced wavelength dependence in good agreement with the design, demonstrating the potential of tailoring the optical properties of liquid-core waveguides to accommodate single-molecule sensing on a chip. We also present an ARROW design to produce wavelength-dependent transmission that is optimized for fluorescence resonance energy transfer (FRET) studies with high transmission at 573 nm and 668 nm, and low transmission at 546 nm.

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Language(s): eng - English
 Dates: 2007
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1117/12.703156
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Title: Conference on Silicon Photonics II
Place of Event: San Jose, CA
Start-/End Date: 2007-01-22 - 2007-01-25

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Title: SILICON PHOTONICS II
Source Genre: Proceedings
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Publ. Info: 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA : SPIE-INT SOC OPTICAL ENGINEERING
Pages: - Volume / Issue: - Sequence Number: 647715 Start / End Page: - Identifier: ISSN: 0277-786X
ISBN: 978-0-8194-6590-0

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Title: Proceedings of SPIE
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: 6477 Sequence Number: - Start / End Page: - Identifier: ISSN: 0277-786X