The radiated fields of the fundamental mode of photonic crystal fibers

Details The radiated fields of the fundamental mode of photonic crystal fibers The radiated fields of the fundamental mode of photonic crystal fibers

2005-05-17

arxiv.org/abs/physics/0505111v1

Opt. Express 13, 3999 (2005).

Physics

Optics

6 pages including 4 figures. Accepted for Opt. Express

Scientific paper

10.1364/OPEX.13.003999

The six-fold rotational symmetry of photonic crystal fibers has important manifestations in the radiated fields in terms of i) a focusing phenomena at a finite distance from the end-facet and ii) the formation of low-intensity satellite peaks in the asymptotic far field. For our study, we employ a surface equivalence principle which allows us to rigorously calculate radiated fields starting from fully-vectorial simulations of the near field. Our simulations show that the focusing is maximal at a characteristic distance from the end-facet. For large-mode area fibers the typical distance is of the order 10 Lambda with Lambda being the pitch of the triangular air-hole lattice of the photonic crystal fiber.

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