The optical coupling efficiency from a plane wave to a single-mode step-index fiber optics is studied considering the exact fiber mode field distribution. A general expression relating the coupling efficiency to the fiber parameters is presented and the optimum coupling efficiency is studied as a function of the fiber normalised frequency and the ratio between the coupling optics radius and focal length. It is also shown that for small values of this ratio the optimum coupling efficiency and a corresponding suitably defined optimum design parameter are functions of the fiber normalized frequency only and they do not depend separately on the wavelength, the fiber core radius or the fiber numerical aperture.
Optical coupling from plane wave to step-index single-mode fiber / M. Lazzaroni, F.E. Zocchi. - In: OPTICS COMMUNICATIONS. - ISSN 0030-4018. - 237:1-3(2004 Jul), pp. 37-43. [10.1016/j.optcom.2004.03.092]
Optical coupling from plane wave to step-index single-mode fiber
M. LazzaroniPrimo
;
2004
Abstract
The optical coupling efficiency from a plane wave to a single-mode step-index fiber optics is studied considering the exact fiber mode field distribution. A general expression relating the coupling efficiency to the fiber parameters is presented and the optimum coupling efficiency is studied as a function of the fiber normalised frequency and the ratio between the coupling optics radius and focal length. It is also shown that for small values of this ratio the optimum coupling efficiency and a corresponding suitably defined optimum design parameter are functions of the fiber normalized frequency only and they do not depend separately on the wavelength, the fiber core radius or the fiber numerical aperture.File | Dimensione | Formato | |
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