Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 15, Number 1, 2019
Highlights of EOSAM 2018
|
|
---|---|---|
Article Number | 7 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.1186/s41476-019-0103-6 | |
Published online | 08 May 2019 |
Research
Tapered photonic crystal fibers coated with ultra-thin films for highly sensitive bio-chemical sensing
1
Centro de Investigaciones en Optica, Division of Photonics, Loma del Bosque 115, Colonia Lomas del Campestre, 37150, Leon, Guanajuato, Mexico
2
Dept. of Physics, A.A. Kuleshov Mogilev State University, 1 Kosmonavtov Str, 212009, Mogilev, Belarus
Received:
28
February
2019
Accepted:
25
April
2019
Background: Photonic crystal fiber Mach-Zehnder modal interferometers based on no adiabatic tapered fibers are perspective for bio-chemical sensing, since they have very high refractive index sensitivity and it is possible for them to use a very small quantity of investigated samples. To obtain a desirable sensitivity to a needed analyte, it was proposed to coat a sensing surface of the refractive index sensor with ultra-thin films.
Methods: In this work, we reported on a no adiabatic tapered special photonic crystal fiber coated with an ultra-thin layer of a Bovine Serum Albumin (BSA) antigen or with an 8 nm palladium film to detect interaction between the BSA antigen and an anti-BSA antibody or for fast detection of hydrogen concentrations, respectively.
Results and conclusion: During our experiments, we received a record detection limit of 125 pg/ml of the anti-BSA antibody concentration. Fast detection of hydrogen concentrations up to 5.6 vol% was carried out. By using a proposed electrodynamics model of a hydrogen sensor, an optimal taper sensing length was determined.
Key words: Optical fiber devices / Optical fiber sensors / Optical fiber interferometer / Photonic crystal fibers
© The Author(s) 2019
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.