Abstract

We reveal that the overall evanescent wave (EW) power captured by an unclad multimode fiber employed in a sensing configuration is determined by the tunneling modes, not the guided modes. While enormous in strength, most of this power is inaccessible using traditional EW power enhancers. However, we found that by roughening the fiber end face, this supposedly lost power can be recaptured and thus can boost the detectable power level significantly. Intensive mode mixing events across various mode categories are proposed to interpret the observed phenomenon.

© 2011 Optical Society of America

Full Article  |  PDF Article
Related Articles
Enhancement of evanescent fluorescence from fiber-optic sensors by thin-film sol-gel coatings

H. Pin Kao, Nancy Yang, and Joseph S. Schoeniger
J. Opt. Soc. Am. A 15(8) 2163-2171 (1998)

Geometrical characterization of liquid core fibers by measurement of thermally induced mode cutoffs and interference

Susana A. Planas, Erik Bochove, and Ramakant Srivastava
Appl. Opt. 21(15) 2708-2715 (1982)

Beam expansion in thermo-optic-effect-induced total internal reflection and its applications in optical switches

Hui Yu, Xiaoqing Jiang, Jianyi Yang, Xihua Li, Qiang Zhou, and Minghua Wang
Appl. Opt. 44(23) 4846-4853 (2005)

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 (21)

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