Abstract

A compact silicon diffractive sensor detecting toluene in solution is demonstrated. This sensor is fabricated in silicon-on-insulator and utilizes a standard telecommunications wavelength. In-plane diffraction gratings enable micrometer-scale device sizes and intensity-based (as opposed to spectral-based) detection for increased integrability. Precise grating design enables 2-D sensor arrays without the addition of separate optical splitters. Detection of the relative diffracted and transmitted intensities is independent of attenuation and is thus robust. This proof-of-concept sensor is shown to measure toluene concentrations as low as 100 parts per million, corresponding to a refractive index change of 3×104. In addition, a linear sensor array with individual sensor addressability and 2-D array capability is demonstrated. The characteristics of this sensor type make it promising for field-deployable lab-on-a-chip applications.

© 2013 Optical Society of America

Full Article  |  PDF Article
Related Articles
Computational investigation of nanohole array based SPR sensing using phase shift

T. Yang and H. P. Ho
Opt. Express 17(13) 11205-11216 (2009)

Controlled detection in composite nanoresonant array for surface plasmon resonance sensing

Lin Pang, Haiping M. Chen, Lilin Wang, Joseph M. Beechem, and Yeshaiahu Fainman
Opt. Express 17(17) 14700-14709 (2009)

Investigation on an application of silver substrates for sensitive surface plasmon resonance imaging detection

Seung Ho Choi and Kyung Min Byun
J. Opt. Soc. Am. A 27(10) 2229-2236 (2010)

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 (6)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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