OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 11 — Aug. 25, 2010

Microfiber-probe-based ultrasmall interferometric sensor

Jun-long Kou, Jing Feng, Qian-jin Wang, Fei Xu, and Yan-qing Lu  »View Author Affiliations

Optics Letters, Vol. 35, Issue 13, pp. 2308-2310 (2010)

View Full Text Article

Enhanced HTML    Acrobat PDF (240 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We report an ultrasmall microfiber-probe-based reflective interferometer for highly sensitive liquid refractive index measurement. It has a 3.5 μm micronotch cavity fabricated by focused ion beam micromachining. A sensitivity of 110 nm / RIU (refractive index unit) in liquid is achieved with over 20 dB extinction ratio. Theoretical analysis shows this kind of device is a hybrid of Fabry–Perot and modal interferometers. In comparison with normal fiber interferometers, this probe sensor is very compact, stable, and cheap, offering great potentials for detecting inside sub-wavelength bubbles, droplets, or biocells.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Diffraction and Gratings

Original Manuscript: April 22, 2010
Manuscript Accepted: June 1, 2010
Published: June 30, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Jun-long Kou, Jing Feng, Qian-jin Wang, Fei Xu, and Yan-qing Lu, "Microfiber-probe-based ultrasmall interferometric sensor," Opt. Lett. 35, 2308-2310 (2010)

Sort:  Author  |  Year  |  Journal  |  Reset  


Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited