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Intensity and phase measurements of asymmetric mode profiles and the transform in the near- to far-field transitions.

Fatadin, I; Ives, D J; Wicks, M C (2008) Intensity and phase measurements of asymmetric mode profiles and the transform in the near- to far-field transitions. Appl. Opt., 47 (7). pp. 1002-1009.

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Abstract

A fast and accurate measurement technique employing a calibrated charge-coupled device (CCD) array is described to measure the intensity and phase distributions of the asymmetric mode profiles associated with optical waveguides. A Shack-Hartmaan wavefront sensor incorporated in the system provides the phase information. The transform describing the near-field to far-field transitions of the asymmetric mode profiles is investigated both experimentally and theoretically. The simulated near-field to far-field transitions using the transform are compared with the measured profiles at different positions from the end face of the waveguide. Good agreement is obtained between the measured and the computed profiles proving the accuracy of the measurement technique and also the transform used for propagation of the asymmetric mode profiles.

Item Type: Article
Subjects: Optical Radiation and Photonics
Optical Radiation and Photonics > Optical Comms. And Data
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4293

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