Abstract

We demonstrate a 300μm long silicon photonic crystal (PC) slot waveguide device for on-chip near-infrared absorption spectroscopy, based on the Beer–Lambert law for the detection of methane gas. The device combines slow light in a PC waveguide with high electric field intensity in a low-index 90nm wide slot, which effectively in creases the optical absorption path length. A methane concentration of 100ppm (parts per million) in nitrogen was measured.

© 2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Multiplexed detection of xylene and trichloroethylene in water by photonic crystal absorption spectroscopy

Wei-Cheng Lai, Swapnajit Chakravarty, Yi Zou, and Ray T. Chen
Opt. Lett. 38(19) 3799-3802 (2013)

Methane detection using scattering material as the gas cell

Hongze Lin, Fei Gao, Yujian Ding, Chunsheng Yan, and Sailing He
Appl. Opt. 55(28) 8030-8034 (2016)

Sensitive on-chip methane detection with a cryptophane-A cladded Mach-Zehnder interferometer

Firehun Tsige Dullo, Susan Lindecrantz, Jana Jágerská, Jørn H. Hansen, Magnus Engqvist, Stian Andre Solbø, and Olav Gaute Hellesø
Opt. Express 23(24) 31564-31573 (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 (4)

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 (3)

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