Numerical Aperture of Single-Mode Photonic Crystal Fibers

Preprint

6 August 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.physics/0202073

Abstract

We consider the problem of radiation into free space from the end-facet of a single-mode photonic crystal fiber (PCF). We calculate the numerical aperture NA=sin theta from the half-divergence angle theta ~ tan^{-1}(lambda/pi w) with pi w^2 being the effective area of the mode in the PCF. For the fiber first presented by Knight et al. we find a numerical aperture NA ~ 0.07 which compares to standard fiber technology. We also study the effect of different hole sizes and demonstrate that the PCF technology provides a large freedom for NA-engineering. Comparing to experiments we find good agreement.

Keywords

All Related Versions

Version 1, 2002-02-28, ArXiv
Version 2, 2002-08-06, ArXiv
Published version: IEEE Photonics Technology Letters, 14 (8), 1094.

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