Abstract

In this work, we analyze and optimize an optical biochemical sensor using silicon multiple-slot waveguides. The rigorous optimization procedure considers parameters such as ridge width, slot width, the number of slots, and the effect of residual silicon left at the bottom of the slot region. These parameters are then optimized using a figure of merit to achieve the highest possible sensitivity to bulk and surface changes in the upper cladding of the sensor. The multiple-slot structure is then studied in a bend configuration in order to construct ring-resonator-based sensors. A bulk sensitivity of 912 nm/refractive index unit is achieved for a change in bulk refractive index, which is three times better than single-slot waveguides.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical bio-chemical sensors on SNOW ring resonators

Mohammadreza Khorasaninejad, Nigel Clarke, M. P. Anantram, and Simarjeet Singh Saini
Opt. Express 19(18) 17575-17584 (2011)

Polymeric slot waveguide interferometer for sensor applications

Marianne Hiltunen, Jussi Hiltunen, Petri Stenberg, Sanna Aikio, Lauri Kurki, Pasi Vahimaa, and Pentti Karioja
Opt. Express 22(6) 7229-7237 (2014)

Porous silicon ring resonator for compact, high sensitivity biosensing applications

Gilberto A. Rodriguez, Shuren Hu, and Sharon M. Weiss
Opt. Express 23(6) 7111-7119 (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 (16)

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 (2)

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