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Proceedings Paper

Integrated optical refractometer based on bend waveguide with air trench structure
Author(s): Jin Hwa Ryu; Jaehoon Park; Chan-mo Kang; Youngdal Son; Lee-Mi Do; Kyu-Ha Baek
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Paper Abstract

This study proposed a novel optical sensor based on a refractometer integrating a bend waveguide and a trench structure. The optical sensor is a planar lightwave circuit (PLC) device involving a bend waveguide with maximum optical loss. A trench structure was aligned with the partially exposed core layer’s sidewall of the bend waveguide, providing a quantitative measurement condition. The insertion losses of the proposed 1 x 2 single-mode optical splitter-type sensor were 4.38 dB and 8.67 dB for the reference waveguide and sensing waveguide, respectively, at a wavelength of 1,550 nm. The optical loss of the sensing waveguide depends on the change in the refractive index of the material in contact with the trench, but the reference waveguide had stable optical propagating characteristic regardless of the variations of the refractive index.

Paper Details

Date Published: 8 July 2015
PDF: 6 pages
Proc. SPIE 9523, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015, 95230K (8 July 2015); doi: 10.1117/12.2189135
Show Author Affiliations
Jin Hwa Ryu, Electronics and Telecommunications Research Institute (Korea, Republic of)
Jaehoon Park, Hallym Univ. (Korea, Republic of)
Chan-mo Kang, Electronics and Telecommunications Research Institute (Korea, Republic of)
Youngdal Son, Electronics and Telecommunications Research Institute (Korea, Republic of)
Lee-Mi Do, Electronics and Telecommunications Research Institute (Korea, Republic of)
Kyu-Ha Baek, Electronics and Telecommunications Research Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 9523:
International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015
Donghyun Kim; Min-Gon Kim; Seung-Han Park, Editor(s)

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