Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/111311
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Type: | Conference paper |
Title: | Fine tuning of transmission features in nanoporous anodic alumina distributed Bragg reflectors |
Author: | Lim, S. Law, C. Santos, A. |
Citation: | Proceedings of SPIE, 2018 / Chon, J.W.M., Jia, B. (ed./s), vol.10456, pp.1045659-1-1045659-15 |
Publisher: | SPIE Press |
Publisher Place: | United States |
Issue Date: | 2018 |
Series/Report no.: | Proceedings of SPIE; 10456 |
ISBN: | 9781510613935 |
ISSN: | 0277-786X 1996-756X |
Conference Name: | SPIE Nanophotonics Australasia 2017 (10 Dec 2017 - 13 Dec 2017 : Melbourne, VIC) |
Editor: | Chon, J.W.M. Jia, B. |
Statement of Responsibility: | Cheryl Suwen Law, Siew Yee Lim and Abel Santos |
Abstract: | This study introduces an innovative apodisation strategy to tune the filtering features of distributed Bragg reflectors based on nanoporous anodic alumina (NAA-DBRs). The effective medium of NAA-DBRs, which is modulated in a stepwise fashion by a pulse-like anodisation approach, is apodised following a logarithmic negative function to engineer the transmission features of NAA-DBRs. We investigate the effect of various apodisation parameters such as apodisation amplitude difference, anodisation period, current density offset and pore widening time, to tune and optimise the optical properties of NAA-DBRs in terms of central wavelength position, full width at half maximum and quality of photonic stop band. The transmission features of NAA-DBRs are shown to be fully controllable with precision across the spectral regions by means of the apodisation parameters. Our study demonstrates that an apodisation strategy can significantly narrow the width and enhance the quality of the characteristic photonic stop band of NAA-DBRs. This rationally designed anodisation approach based on the combination of apodisation and stepwise pulse anodisation enables the development of optical filters with tuneable filtering features to be integrated into optical technologies acting as essential photonic elements in devices such as optical sensors and biosensors. |
Keywords: | Nanoporous Anodic Alumina; Distributed Bragg Reflectors; Apodisation; Filtering Features; Stepwise Pulse Anodisation |
Rights: | © 2018 SPIE |
DOI: | 10.1117/12.2282250 |
Grant ID: | http://purl.org/au-research/grants/arc/DE140100549 |
Published version: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10456.toc |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications IPAS publications |
Files in This Item:
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hdl_111311.pdf | Published version | 7.35 MB | Adobe PDF | View/Open |
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