Analysis of modal interference in Photonic Bandgap Fibres

Author

Petrovich, Marco N. ; Poletti, Francesco ; Richardson, David J.

Author_Institution

Optoelectron. Res. Centre, Univ. of Southampton, Southampton, UK

fYear

2010

Firstpage

1

Lastpage

4

Abstract

We present a detailed analysis of multimode interference (MI) effects in a seven cell hollow core Photonic Bandgap Fibre (PBGF). The presence of several modes with widely different group velocities and strong dispersion can give rise to complex MI modulation, which is particularly visible over meter-scale fibre lengths and represents a significant drawback for some PBGF applications. By performing a Fourier analysis of high resolution transmission spectra it was possible to isolate several modulation components. The optical modes corresponding to each of these components were then identified through their differential group index relative to the lowest-order core guided mode by comparison with accurate modal maps.

Keywords

Fourier analysis; photonic band gap; Fourier analysis; group velocities; modal interference; multimode interference effects; photonic bandgap fibres; strong dispersion; Fiber nonlinear optics; Interference; Optical devices; Optical fiber devices; Optical fiber dispersion; Optical fibers; Optical modulation; Optical pulse compression; Optical sensors; Photonic bandgap fibers; Gas sensing; Modal Interference; Optical Modes; Photonic Bandgap Fibres;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2010 12th International Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-7799-9

Electronic_ISBN

978-1-4244-7797-5

Type

conf

DOI

10.1109/ICTON.2010.5549078

Filename

5549078