Measuring beam quality of hollow core photonic crystal fibers

In this paper, the authors measure the quality of the delivered beam from hollow core photonic crystal fibers (HC-PCFs). The M 2 parameter is determined, and the near- to far-field transition is examined. The influence on these properties due to the presence of a core surround mode is evaluated. The...

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Bibliographic Details
Published in:Journal of lightwave technology 2006-10, Vol.24 (10), p.3761-3769
Main Authors: Shephard, J.D., Roberts, P.J., Jones, J.D.C., Knight, J.C., Hand, D.P.
Format: Article
Language:English
Subjects:
Applied sciences
Beam quality
Beams (radiation)
Circuit properties
Councils
Crystal fibers
Detection, estimation, filtering, equalization, prediction
Electric, optical and optoelectronic circuits
Electronics
Electrons
Exact sciences and technology
Focusing
hollow core (HC)
Information, signal and communications theory
Integrated optics. Optical fibers and wave guides
ISO standards
Measurement standards
Optical and optoelectronic circuits
Optical materials
Organizations
Particle measurements
Photonic crystal fibers
photonic crystal fibers (PCFs)
Photonic crystals
Photonics
Signal and communications theory
Signal, noise
Solids
Standards organizations
Telecommunications and information theory
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Summary:In this paper, the authors measure the quality of the delivered beam from hollow core photonic crystal fibers (HC-PCFs). The M 2 parameter is determined, and the near- to far-field transition is examined. The influence on these properties due to the presence of a core surround mode is evaluated. The applicability of the International Standards Organization 11146:1999 standard for M 2 measurement of the beam quality of HC-PCFs is discussed. Because they are dependent on the measurement parameters, such as choice of aperturing scheme and the axis of measurement, M 2 values could vary from 1.32 to 3.17 for the same output beam. This highlights the need for careful consideration when measuring and describing the beam quality delivered by these novel photonic fibers
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2006.881845