The University of Southampton
University of Southampton Institutional Repository

Optical nanofiber coupler sensors operating in the cut-off wavelength region

Optical nanofiber coupler sensors operating in the cut-off wavelength region
Optical nanofiber coupler sensors operating in the cut-off wavelength region
An ultrasensitive optical nanofiber coupler (NFC) for thermal and refractive index sensing with nanoscale dimension is proposed and experimentally demonstrated. The NFC operating near the cut-off region of the higher order modes is fabricated by fusing and pulling two standard telecom fibers using the modified flame brushing technique. Due to the sub-micron diameter, the NFC exhibits an anomalous behavior in close proximity to the odd supermode cut-off wavelength, where the high extinction ratio spectral oscillations exhibit very slow oscillations. The sensitivity of this region is exploited for thermal sensing over a broad range of temperatures (84 °C–661 °C). An average temperature sensitivity of 55 pm/°C and a maximum sensitivity of 60 pm/°C at the highest temperature were demonstrated. Owing to its small size, the thermal sensor exhibits a fast response time of ~7.2 ms. The sensor capability for detecting refractive index changes is also examined with different ethanol concentrations. A record sensitivity of 4.80×105 nm/RIU was achieved, which is the highest reported value in all optical fiber refractometers.
nanofiber coupler, temperature sensor, refractive index sensor, broad temperature, large dynamic range
1530-437X
2782-2787
Talataisong, Wanvisa
7901320c-7d2e-488a-b47f-c93de4245234
Ismaeel, Rand
c1fb0984-a4c0-484a-8aef-625d48a62086
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Talataisong, Wanvisa
7901320c-7d2e-488a-b47f-c93de4245234
Ismaeel, Rand
c1fb0984-a4c0-484a-8aef-625d48a62086
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

Talataisong, Wanvisa, Ismaeel, Rand, Lee, Timothy, Beresna, Martynas and Brambilla, Gilberto (2018) Optical nanofiber coupler sensors operating in the cut-off wavelength region. IEEE Sensors Journal, 18 (7), 2782-2787. (doi:10.1109/JSEN.2018.2802724).

Record type: Article

Abstract

An ultrasensitive optical nanofiber coupler (NFC) for thermal and refractive index sensing with nanoscale dimension is proposed and experimentally demonstrated. The NFC operating near the cut-off region of the higher order modes is fabricated by fusing and pulling two standard telecom fibers using the modified flame brushing technique. Due to the sub-micron diameter, the NFC exhibits an anomalous behavior in close proximity to the odd supermode cut-off wavelength, where the high extinction ratio spectral oscillations exhibit very slow oscillations. The sensitivity of this region is exploited for thermal sensing over a broad range of temperatures (84 °C–661 °C). An average temperature sensitivity of 55 pm/°C and a maximum sensitivity of 60 pm/°C at the highest temperature were demonstrated. Owing to its small size, the thermal sensor exhibits a fast response time of ~7.2 ms. The sensor capability for detecting refractive index changes is also examined with different ethanol concentrations. A record sensitivity of 4.80×105 nm/RIU was achieved, which is the highest reported value in all optical fiber refractometers.

Text
NFC_sensors_operating_near_cut_off_Wanvisa_Talataisong - Accepted Manuscript
Download (733kB)

More information

Accepted/In Press date: 1 February 2018
e-pub ahead of print date: 12 February 2018
Published date: 1 April 2018
Keywords: nanofiber coupler, temperature sensor, refractive index sensor, broad temperature, large dynamic range

Identifiers

Local EPrints ID: 419268
URI: http://eprints.soton.ac.uk/id/eprint/419268
ISSN: 1530-437X
PURE UUID: 1f1c56c2-dfcf-420d-912e-acc24061ff9e
ORCID for Timothy Lee: ORCID iD orcid.org/0000-0001-9665-5578
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

Catalogue record

Date deposited: 09 Apr 2018 16:30
Last modified: 16 Mar 2024 03:21

Export record

Altmetrics

Contributors

Author: Wanvisa Talataisong
Author: Rand Ismaeel
Author: Timothy Lee ORCID iD
Author: Martynas Beresna
Author: Gilberto Brambilla ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×