Nanophotonics of optical fibers

Research output: Contribution to journalArticle

Abstract

This review is concerned with nanoscale effects in highly transparent dielectric photonic structures fabricated from optical fibers. In contrast to those in plasmonics, these structures do not contain metal particles, wires, or films with nanoscale dimensions. Nevertheless, a nanoscale perturbation of the fiber radius can significantly alter their performance. This paper consists of three parts. The first part considers propagation of light in thin optical fibers (microfibers) having the radius of the order of 100 nanometers to 1 micron. The fundamental mode propagating along a microfiber has an evanescent field which may be strongly expanded into the external area. Then, the cross-sectional dimensions of the mode and transmission losses are very sensitive to small variations of the microfiber radius. Under certain conditions, a change of just a few nanometers in the microfiber radius can significantly affect its transmission characteristics and, in particular, lead to the transition from the waveguiding to non-waveguiding regime. The second part of the review considers slow propagation of whispering gallery modes in fibers having the radius of the order of 10–100 microns. The propagation of these modes along the fiber axis is so slow that they can be governed by extremely small nanoscale changes of the optical fiber radius. This phenomenon is exploited in SNAP (surface nanoscale axial photonics), a new platform for fabrication of miniature super-low-loss photonic integrated circuits with unprecedented sub-angstrom precision. The SNAP theory and applications are overviewed. The third part of this review describes methods of characterization of the radius variation of microfibers and regular optical fibers with sub-nanometer precision.
LanguageEnglish
Pages393-406
Number of pages14
JournalNanophotonics
Volume2
Issue number5-6
Early online date15 Nov 2013
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Optics and Photonics
Optical Fibers
Nanophotonics
Photonics
microfibers
Optical fibers
optical fibers
radii
Fibers
photonics
Evanescent fields
Whispering gallery modes
fibers
propagation
Integrated circuits
Metals
Wire
whispering gallery modes
Light
Fabrication

Keywords

  • microfiber
  • nanophotonics
  • microresonator

Cite this

Sumetsky, M. / Nanophotonics of optical fibers. In: Nanophotonics. 2013 ; Vol. 2, No. 5-6. pp. 393-406.
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Nanophotonics of optical fibers. / Sumetsky, M.

In: Nanophotonics, Vol. 2, No. 5-6, 12.2013, p. 393-406.

Research output: Contribution to journalArticle

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