Optical characterization of refractive index sensors based on planar waveguide Fabry-Perot Bragg grating cavity

Sang-Mae Lee; Wan-Taek Jeong; Kyung-Chun Kim; Kyung-Jo Kim; Mincheol Oh; Thomas Chung; Simarjeet S. Saini; Mario Dagenais

doi:10.1117/12.2018636

20 May 2013 Optical characterization of refractive index sensors based on planar waveguide Fabry-Perot Bragg grating cavity

Sang-Mae Lee, Wan-Taek Jeong, Kyung-Chun Kim, Kyung-Jo Kim, Mincheol Oh, Thomas Chung, Simarjeet S. Saini, Mario Dagenais

Author Affiliations +

Proceedings Volume 8879, Nano-Bio Sensing, Imaging, and Spectroscopy; 887909 (2013) https://doi.org/10.1117/12.2018636
Event: Nano-Bio Sensing, Imaging and Spectroscopy, 2013, Jeju, Korea, Republic of

Abstract

This study demonstrates the high sensitivity of high Q polymeric planar waveguide refractive index sensors used on the evanescent field. A Fabry-Perot Bragg gratings cavity was fabricated with a cavity size of 5 mm and 7 mm, respectively. The spectra of light reflected from fabricated Bragg gratings, which were butt-joined, were measured and compared with different indices of surrounding media. It was confirmed the FP Bragg gratings cavity is more sensitive than the single Bragg grating. The sensor developed in this study shows much promise in the application of biomedical diagnostics such as a bio-sensor and/or environmental monitoring systems.

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Sang-Mae Lee, Wan-Taek Jeong, Kyung-Chun Kim, Kyung-Jo Kim, Mincheol Oh, Thomas Chung, Simarjeet S. Saini, and Mario Dagenais "Optical characterization of refractive index sensors based on planar waveguide Fabry-Perot Bragg grating cavity", Proc. SPIE 8879, Nano-Bio Sensing, Imaging, and Spectroscopy, 887909 (20 May 2013); https://doi.org/10.1117/12.2018636

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