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Novel optical-waveguide sensing platform based on input grating coupler

Publication ,  Conference
Grego, S; Naskar, S; Patel, AM; Huffman, A; Bower, CA; Stoner, BR
Published in: Proceedings of SPIE - The International Society for Optical Engineering
May 25, 2006

Silicon oxynitride optical waveguides with a grating coupler were used for a label-free detection approach that measures the change of refractive index at the grating surface. Two approaches were used for the grating fabrication: (i) commercially available linear gratings were used as stamps for imprint lithography and the pattern was transferred by dry-etching; (ii) polystyrene microspheres self-assembly in an ordered close-packed array was exploited to obtain a two-dimensional grating with hexagonal symmetry. Optical coupling into slab waveguides of both visible (633nm) and tunable infrared (1550 nm) lasers was characterized as a function of incident angle in a custom-made automated apparatus. Sensitivity to different aqueous solutions was demonstrated with low loss waveguides fabricated using low-frequency plasma-enhanced chemical vapor deposition. The exploitation of the tunability of telecom infrared lasers and of the two-dimensional hexagonal grating coupler has the ultimate goal of providing a high performance, compact sensor that does not require mechanical moving parts.

Duke Scholars

Published In

Proceedings of SPIE - The International Society for Optical Engineering

DOI

ISSN

0277-786X

Publication Date

May 25, 2006

Volume

6123

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
 

Citation

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Grego, S., Naskar, S., Patel, A. M., Huffman, A., Bower, C. A., & Stoner, B. R. (2006). Novel optical-waveguide sensing platform based on input grating coupler. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6123). https://doi.org/10.1117/12.646302
Grego, S., S. Naskar, A. M. Patel, A. Huffman, C. A. Bower, and B. R. Stoner. “Novel optical-waveguide sensing platform based on input grating coupler.” In Proceedings of SPIE - The International Society for Optical Engineering, Vol. 6123, 2006. https://doi.org/10.1117/12.646302.
Grego S, Naskar S, Patel AM, Huffman A, Bower CA, Stoner BR. Novel optical-waveguide sensing platform based on input grating coupler. In: Proceedings of SPIE - The International Society for Optical Engineering. 2006.
Grego, S., et al. “Novel optical-waveguide sensing platform based on input grating coupler.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 6123, 2006. Scopus, doi:10.1117/12.646302.
Grego S, Naskar S, Patel AM, Huffman A, Bower CA, Stoner BR. Novel optical-waveguide sensing platform based on input grating coupler. Proceedings of SPIE - The International Society for Optical Engineering. 2006.

Published In

Proceedings of SPIE - The International Society for Optical Engineering

DOI

ISSN

0277-786X

Publication Date

May 25, 2006

Volume

6123

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering