Abstract

In this letter a humidity and pressure PMMA capillary Whispering-Gallery Resonator sensors are developed. The excitation of the WGMs is performed evanescently with a fiber taper. The experimental results show a sensitivity of 0.07 nm/% RH for the humidity sensor and a sensitivity of 0.36 nm/bar for pressure sensor. Hysteresis has been noticed in the humidity one as result of the PMMA water absorbance. Theoretical models that explain both sensors are introduced and show good agreement with the collected data.

© 2014 Optical Society of America

PDF Article

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