Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Effect of dispersion on sensing parameters of a racetrack resonator-based biosensor at 850 nm

Not Accessible

Your library or personal account may give you access

Abstract

In this paper, the effect of dispersion on sensing parameters of a racetrack resonator-based biosensor is studied. It is shown that dispersion has a significant effect in biosensing characteristics of a resonator designed with silicon-oxy-nitride (SiON) waveguides in a racetrack configuration. Based on the results, high sensitivity (S) can be achieved using a SiON racetrack resonator as a biosensing device. Simultaneously, this device has a high total quality factor (Qt). The highest S for a transverse electric whispering gallery mode (TE WGM) of 1 (2) is found to be 87.82 (434.94) nm/RIU at an optimized resonator radius of 69 μm (19 μm). At the same time, the highest Qt factor of 4.6×104 is obtained for TE WGM 1 and 2, at biological cladding. These amounts of S and Qt factors result in an ultrahigh figure of merit (FOM) of 4766RIU1 and 23705RIU1, respectively, for TE WGM 1 and 2. Based on the FOM calculations, our sensor structure performs 237 orders of magnitude better than surface plasmon resonance devices for bulk refractometric sensing. Device analysis is done by simple, fast, and reliable analytical methods. The model results are validated through comparison with experimental reports.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Embedded racetrack microring resonator sensor based on GeSbSe glasses

Zhiyong Li, Cheng Hou, Ye Luo, Wei Zhang, Lan Li, Peipeng Xu, and Tiefeng Xu
Opt. Express 31(2) 1103-1111 (2023)

Silicon photonic micro-disk resonators for label-free biosensing

Samantha M. Grist, Shon A. Schmidt, Jonas Flueckiger, Valentina Donzella, Wei Shi, Sahba Talebi Fard, James T. Kirk, Daniel M. Ratner, Karen C. Cheung, and Lukas Chrostowski
Opt. Express 21(7) 7994-8006 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (15)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved