Optical fiber milled by focused ion beam and its application for Fabry-Pérot refractive index sensor

Wu Yuan; Fei Wang; Alexey Savenko; Dirch Hjorth Petersen; Ole Bang

doi:10.1063/1.3608111

Optical fiber milled by focused ion beam and its application for Fabry-Pérot refractive index sensor

Wu Yuan, Fei Wang, Alexey Savenko, Dirch Hjorth Petersen, Ole Bang

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

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 nmRIU (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.

Original language	English (US)
Article number	076103
Journal	Review of Scientific Instruments
Volume	82
Issue number	7
DOIs	https://doi.org/10.1063/1.3608111
State	Published - Jul 2011
Externally published	Yes

ASJC Scopus subject areas

Instrumentation

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10.1063/1.3608111

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title = "Optical fiber milled by focused ion beam and its application for Fabry-P{\'e}rot refractive index sensor",

abstract = "We introduce a highly compact fiber-optic Fabry-P{\'e}rot 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 nmRIU (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.",

author = "Wu Yuan and Fei Wang and Alexey Savenko and Petersen, {Dirch Hjorth} and Ole Bang",

note = "Funding Information: We would like to acknowledge support from the Danish National Advanced Technology Foundation (Project No. 10-080864). The FIB fabrication process was performed at the Center for Electron Nanoscopy (DTU CEN).",

year = "2011",

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doi = "10.1063/1.3608111",

language = "English (US)",

volume = "82",

journal = "Review of Scientific Instruments",

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AU - Yuan, Wu

AU - Wang, Fei

AU - Savenko, Alexey

AU - Petersen, Dirch Hjorth

AU - Bang, Ole

N1 - Funding Information: We would like to acknowledge support from the Danish National Advanced Technology Foundation (Project No. 10-080864). The FIB fabrication process was performed at the Center for Electron Nanoscopy (DTU CEN).

PY - 2011/7

Y1 - 2011/7

N2 - 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 nmRIU (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.

AB - 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 nmRIU (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.

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Optical fiber milled by focused ion beam and its application for Fabry-Pérot refractive index sensor

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