Abstract

A sensitivity-enhanced optical fiber refractive index sensor based on inline Mach-Zehnder interferometer is proposed. The sensor head is formed by splicing a tapered thin-core diameter fiber between two sections of single mode fibers. The taper (less than 1 mm) plays an important role in improving the sensitivity of the sensor. The sensitivity of refractive index is measured to be 0.447 nm for a 1% change of refractive index in the typical refractive index range of 1.333-1.3725. The whole fabrication process (including splicing and tapering) can be operated by a commercial fiber splicing machine. The proposed sensor also shows the merits of simple structure, low cost, and easy fabrication.

© 2011 Optical Society of America

PDF Article
More Like This
Bent Inline Fiber Mach-Zehnder Interferometer Used for Refractive Index Sensing

Fangda Yu, Chuanxin Teng, Peng Xue, and Jie Zheng
Su2A.97 Asia Communications and Photonics Conference (ACPC) 2017

Refractive index insensitive Mach-Zehnder interferometer based on an air-clad thin-core fiber

Zi-Wei Feng, Chuang Wu, Zheng-Yong Liu, Bai-Ou Guan, and Hwa-Yaw Tam
Th4A.59 Asia-Pacific Optical Sensors Conference (APOS) 2016

Mach-Zehnder Interferometer using Small Diameter Single Mode Fiber for Refractive Index Sensing

Farid Ahmed, Martin B.G. Jun, Hang-Eun Joe, No-Cheol Park, and Byung-Kwon Min
AW3I.5 Asia Communications and Photonics Conference (ACPC) 2014

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription