Journal article
Note: Optical fiber milled by focused ion beam and its application for Fabry-Pérot refractive index sensor
Fiber Sensors & Supercontinuum, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Department of Micro- and Nanotechnology, Technical University of Denmark3
Nanointegration Group, NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark4
NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark5
We introduce a highly compact fiber-optic Fabry-Pérot refractive index sensor integrated with a fluid channel that is fabricated directly near the tip of a 32 μm in diameter single-mode fiber taper. The focused ion beam technique is used to efficiently mill the microcavity from the fiber side and finely polish the end facets of the cavity with a high spatial resolution.
It is found that a fringe visibility of over 15 dB can be achieved and that the sensor has a sensitivity of ∼1731 nm/RIU (refractive index units) and a detection limit of ∼5.78 × 10−6 RIU. This miniature integrated all-in-fiber optofludic sensor may find use in minimal-invasive biomedical applications.
| Language: | English |
|---|---|
| Publisher: | American Institute of Physics |
| Year: | 2011 |
| Pages: | 076103 |
| ISSN: | 10897623 and 00346748 |
| Types: | Journal article |
| DOI: | 10.1063/1.3608111 |
| ORCIDs: | Petersen, Dirch Hjorth and Bang, Ole |
