Abstract

A full-vectorial H-field formulation-based finite element approach is used to optimize a biosensor structure incorporating a horizontal slot waveguide. It is designed to detect DNA hybridization through the change of the effective index of the waveguide structure. The key parameters, such as normalized power confinement, power density, change in effective index, and sensitivity are presented by optimizing the device parameters of the slot waveguide. It is shown here that a 90.0 μm long compact Mach–Zehnder section can be designed with horizontal slot waveguide to detect DNA hybridization and for a ring resonator arrangement a sensitivity of 893.5 nm/RIU is obtained.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Label-free slot-waveguide biosensor for the detection of DNA hybridization

Tuffail Dar, Jiri Homola, B. M. Azizur Rahman, and Muttukrishnan Rajarajan
Appl. Opt. 51(34) 8195-8202 (2012)

Optimization of multiple-slot waveguides for biochemical sensing

Iman Khodadad, Nigel Clarke, Mohammadreza Khorasaninejad, Dale Henneke, and Simarjeet S. Saini
Appl. Opt. 53(23) 5169-5178 (2014)

Horizontal slot waveguides for polarization branching control

Nai-Chia Cheng, Yao-Feng Ma, Po-Han Fu, Chun-Chieh Chin, and Ding-Wei Huang
Appl. Opt. 54(3) 436-443 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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

Equations (7)

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

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

Metrics

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

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