Version 1
: Received: 17 July 2019 / Approved: 18 July 2019 / Online: 18 July 2019 (09:19:20 CEST)
How to cite:
Kim, D.; Jeon, S.; Lee, J.; Hong, S.; Choi, Y. Novel S-Bend Resonator Based on a Multi-Mode Waveguide with Mode Discrimination for a Refractive Index Sensor. Preprints2019, 2019070209
Kim, D.; Jeon, S.; Lee, J.; Hong, S.; Choi, Y. Novel S-Bend Resonator Based on a Multi-Mode Waveguide with Mode Discrimination for a Refractive Index Sensor. Preprints 2019, 2019070209
Kim, D.; Jeon, S.; Lee, J.; Hong, S.; Choi, Y. Novel S-Bend Resonator Based on a Multi-Mode Waveguide with Mode Discrimination for a Refractive Index Sensor. Preprints2019, 2019070209
APA Style
Kim, D., Jeon, S., Lee, J., Hong, S., & Choi, Y. (2019). Novel S-Bend Resonator Based on a Multi-Mode Waveguide with Mode Discrimination for a Refractive Index Sensor. Preprints. https://doi.org/
Chicago/Turabian Style
Kim, D., Seok-Ho Hong and Young-Wan Choi. 2019 "Novel S-Bend Resonator Based on a Multi-Mode Waveguide with Mode Discrimination for a Refractive Index Sensor" Preprints. https://doi.org/
Abstract
In this paper, a multi-mode waveguide-based optical resonator is proposed for an integrated optical refractive index sensor. Conventional optical resonators have been studied for single-mode waveguide-based resonators to enhance the performance, but mass production is limited owing to the high fabrication costs of nano-scale structures. To overcome this problem, we designed an S-bend resonator based on a micro-scale multi-mode waveguide. In general, multi-mode waveguides cannot be utilized as optical resonators, because of a performance degradation resulting from modal dispersion and an output transmission with multi-peaks. Therefore, we exploited the mode discrimination phenomenon using the bending loss, and the resulting S-bend resonator yielded an output transmission without multi-peaks. This phenomenon is utilized to remove higher-order modes efficiently using the difference in the effective refractive index between the higher-order and fundamental modes. As a result, the resonator achieved a Q-factor and sensitivity of 2.3x103and 52 nm/RIU, respectively, using the variational finite-difference time-domain method. These results show that the multi-mode waveguide-based S-bend resonator with a wide line width can be utilized as a refractive index sensor.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
