Singlemode hetero-core fiber based refractometer demodulated in a ratiometric system

Qiang Wu, Youqiao Ma, Lin Bo, Pengfei Wang, Yuliya Semenova, Gerald Farrell

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


We propose a fiber refractometer based on a singlemode-small core singlemode (SCSMF)-singlemode (SMF28-SCSMF-SMF28) structure demodulated by a ratiometric measurement system. Both the SMF28 and SCSMF fibers have a step index profile and the conventional SMF28 fiber is used at both ends as the attaching fiber to the small core SMF fiber. By measuring the power variations at the output of the refractometer, the surrounding refractive index (SRI) can be determined. Experiments demonstrate a maximum RI sensitivity of 1.55×10-5 in the SRI range from 1.3340 to 1.4485.
Original languageEnglish
Title of host publication2011 IEEE Sensors Proceedings
Place of PublicationPiscataway, NJ
ISBN (Print)9781424492909
Publication statusPublished - 2011
EventIEEE Sensors 2011 - Limerick
Duration: 1 Jan 2011 → …


ConferenceIEEE Sensors 2011
Period1/01/11 → …


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