Interfacing optical fibers with plasmonic nanoconcentrators

Nanophotonics

article

Alessandro Tuniz¹  Markus A. Schmidt³ 

[1] Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney;The University of Sydney Nano Institute (Sydney Nano), University of Sydney;Leibniz Institute of Photonic Technology (IPHT Jena);Abbe School of Photonics and Faculty of Physics;Otto Schott Institute of Materials Research

关键词: plasmonics;    microstructured optical fibers;    multimaterial and hybrid fibers;    nanoconcentration of light;    near-field probes;   

DOI  :  10.1515/nanoph-2018-0015

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

The concentration of light to deep-subwavelength dimensions plays a key role in nanophotonics and has the potential to bring major breakthroughs in fields demanding to understand and initiate interaction on nanoscale dimensions, including molecular disease diagnostics, DNA sequencing, single nanoparticle manipulation and characterization, and semiconductor inspection. Although planar metallic nanostructures provide a pathway to nanoconcentration of electromagnetic fields, the delivery/collection of light to/from such plasmonic nanostructures is often inefficient, narrow-band, and requires complicated excitations schemes, limiting widespread applications. Moreover, planar photonic devices reveal a reduced flexibility in terms of bringing the probe light to the sample. An ideal photonic-plasmonic device should combine (i) a high spatial resolution at the nanometre level beyond to what is state-of-the-art in near-field microscopy with (ii) flexible optical fibers to promote a straightforward integration into current near-field scanning microscopes. Here, we review the recent development and main achievements of nanoconcentrators interfacing optical fibers at their end-faces that reach entirely monolithic designs, including campanile probes, gold-coated fiber-taper nanotips, and fiber-integrated gold nanowires.

【 授权许可】

CC BY