Integrated optical refractometer based on bend waveguide with air trench structure

Jin Hwa Ryu; Jaehoon Park; Chan-mo Kang; Youngdal Son; Lee-Mi Do; Kyu-Ha Baek

doi:10.1117/12.2189135

8 July 2015 Integrated optical refractometer based on bend waveguide with air trench structure

Jin Hwa Ryu, Jaehoon Park, Chan-mo Kang, Youngdal Son, Lee-Mi Do, Kyu-Ha Baek

Proceedings Volume 9523, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015; 95230K (2015) https://doi.org/10.1117/12.2189135
Event: International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015, 2015, Jeju, Korea, Republic of

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.

Citation Download Citation

Jin Hwa Ryu, Jaehoon Park, Chan-mo Kang, Youngdal Son, Lee-Mi Do, and Kyu-Ha Baek "Integrated optical refractometer based on bend waveguide with air trench structure", Proc. SPIE 9523, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015, 95230K (8 July 2015); https://doi.org/10.1117/12.2189135

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KEYWORDS

Waveguides

Refractive index

Chromium

Photonic integrated circuits

Quartz

Semiconducting wafers

Integrated optics

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