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Micco A, Ricciardi A, Pisco M, et al. Optical fiber tip templating using direct focused ion beam milling. Sci Rep. 2015;5:15935doi: 10.1038/srep15935.
Micco, A., Ricciardi, A., Pisco, M., La Ferrara, V., & Cusano, A. (2015). Optical fiber tip templating using direct focused ion beam milling. Scientific reports, 515935. https://doi.org/10.1038/srep15935
Micco, A, et al. "Optical fiber tip templating using direct focused ion beam milling." Scientific reports vol. 5 (2015): 15935. doi: https://doi.org/10.1038/srep15935
Micco A, Ricciardi A, Pisco M, La Ferrara V, Cusano A. Optical fiber tip templating using direct focused ion beam milling. Sci Rep. 2015 Nov 04;5:15935. doi: 10.1038/srep15935. PMID: 26531887; PMCID: PMC4632123.
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Sci Rep. 2015 Nov 04;5:15935. doi: 10.1038/srep15935.

Optical fiber tip templating using direct focused ion beam milling.

Scientific reports

A Micco, A Ricciardi, M Pisco, V La Ferrara, A Cusano

Affiliations

  1. Optoelectronic Division, Department of Engineering, University of Sannio, I-82100, Benevento, Italy.
  2. ENEA, Portici Research Center, P.le E. Fermi 1, 80055 Portici, Napoli, Italy.

PMID: 26531887 PMCID: PMC4632123 DOI: 10.1038/srep15935

Abstract

We report on a method for integrating sub-wavelength resonant structures on top of optical fiber tip. Our fabrication technique is based on direct milling of the glass on the fiber facet by means of focused ion beam. The patterned fiber tip acts as a structured template for successive depositions of any responsive or functional overlay. The proposed method is validated by depositing on the patterned fiber a high refractive index material layer, to obtain a 'double-layer' photonic crystal slab supporting guided resonances, appearing as peaks in the reflection spectrum. Morphological and optical characterizations are performed to investigate the effects of the fabrication process. Our results show how undesired effects, intrinsic to the fabrication procedure should be taken into account in order to guarantee a successful development of the device. Moreover, to demonstrate the flexibility of our approach and the possibility to engineering the resonances, a thin layer of gold is also deposited on the fiber tip, giving rise to a hybrid photonic-plasmonic structure with a complementary spectral response and different optical field distribution at the resonant wavelengths. Overall, this work represents a significant step forward the consolidation of Lab-on-Fiber Technology.

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