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Spiral-path high-sensitivity silicon photonic wire molecular sensor with temperature-independent response
Abstract
We demonstrate a new silicon photonic wire waveguide evanescent field (PWEF) sensor that exploits the strong evanescent field of the transverse magnetic mode of this high-index-contrast, submicrometer-dimension waveguide. High sensitivity is achieved by using a 2 mm long double-spiral waveguide structure that fits within a compact circular area of 150 microm diameter, facilitating compatibility with commercial spotting apparatus and the fabrication of densely spaced sensor arrays. By incorporating the PWEF sensor element into a balanced waveguide Mach-Zehnder interferometer circuit, a minimum detectable mass of approximately 10 fg of streptavidin protein is demonstrated with near temperature-independent response.
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Citations
Cited by
High-Q Optical Sensors for Chemical and Biological Analysis
Luchansky, M. S., & Bailey, R. C. (2012) · Analytical Chemistry · doi:10.1021/ac2029024 · Cited by 288
Chakraborty, A., & Sarkar, A. (2017) · Journal of Computational Electronics · doi:10.1007/s10825-017-0999-2 · Cited by 94
Sub-20 nm GaAs junctionless FinFET for biosensing application
Chhabra, A., Kumar, A., & Chaujar, R. (2019) · Vacuum · doi:10.1016/j.vacuum.2018.12.007 · Cited by 44
Metadata
- Authors
- Densmore, A., Xu, D.-X., Janz, S., Waldron, P., Mischki, T., Lopinski, G., Delâge, A., Lapointe, J., Cheben, P., Lamontagne, B., & Schmid, J. H.
- Venue
- Optics Letters
- Publisher
- Optica Publishing Group
- Published
- 2008-03-14
- Volume
- 33
- Issue
- 6
- Pages
- 596
- ISSN
- 0146-9592 (ISSN-L)
- 1539-4794
- OpenAlex
- W2036269274
- Cited by
- 170
- References
- 0
- FWCI
- 14.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Spiral-path high-sensitivity silicon photonic wire molecular sensor with temperature-independent response. https://app.cochat.ai/papers/10.1364/ol.33.000596
- The paper
- Densmore, A., Xu, D.-X., Janz, S., Waldron, P., Mischki, T., Lopinski, G., Delâge, A., Lapointe, J., Cheben, P., Lamontagne, B., & Schmid, J. H. (2008). Spiral-path high-sensitivity silicon photonic wire molecular sensor with temperature-independent response. Optics Letters. https://doi.org/10.1364/ol.33.000596
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