Data di Pubblicazione:
2007
Citazione:
Single-modeness of short large mode area fibers: an experimental study / A.M. Grassi, F. Casagrande, M. D'Alessandro, S. Marinoni. - In: OPTICS COMMUNICATIONS. - ISSN 0030-4018. - 273:1(2007 May), pp. 127-132.
Abstract:
We experimentally investigated the limits to the endlessly single-modeness of large mode area photonic crystal fibers. We analyzed two versions of a commercial large mode area fiber with equal structural parameters but five or seven confining rings, and in both cases we found that the single mode regime becomes critical for short (<1 m) lengths. In these cases we report on the excitation of a second-order mode, whose microphotographed structure is very well reproduced by the results of numerical simulations. The multimodal behavior is further confirmed by polarization measurements. Also we found that the single-modeness is maintained in longer (>1 m) fibers. The same results were observed in large mode area fibers with different core sizes.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
optical fibre polarisation ; optical fibre testing ; photonic crystals ; endlessly single mode ; large mode area fibers ; photonic crystal fibers
Elenco autori:
A.M. Grassi, F. Casagrande, M. D'Alessandro, S. Marinoni
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