Improved method for estimating the minimum length of modal filters fabricated for stellar interferometry

Sonali Dasgupta; N. G.R. Broderick; David J. Richardson; Tomer Lewi; Abraham Katzir

doi:10.1364/OE.17.001935

Improved method for estimating the minimum length of modal filters fabricated for stellar interferometry

Sonali Dasgupta^*, N. G.R. Broderick, David J. Richardson, Tomer Lewi, Abraham Katzir

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We present an improved theoretical model to estimate the minimum fiber length required for achieving a desired degree of wavefront filtering in stellar interferometry. The proposed model is based on modal analysis of the fiber and is compared with numerical results obtained through the beam propagation method as well as with reported experimental observations. We also study the effect of introducing a spatial filter at the output end of the fiber and show that the required fiber length can be reduced significantly by introducing a circular aperture of optimum radius after the fiber.

Original language	English
Pages (from-to)	1935-1946
Number of pages	12
Journal	Optics Express
Volume	17
Issue number	3
DOIs	https://doi.org/10.1364/OE.17.001935
State	Published - 2 Feb 2009

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abstract = "We present an improved theoretical model to estimate the minimum fiber length required for achieving a desired degree of wavefront filtering in stellar interferometry. The proposed model is based on modal analysis of the fiber and is compared with numerical results obtained through the beam propagation method as well as with reported experimental observations. We also study the effect of introducing a spatial filter at the output end of the fiber and show that the required fiber length can be reduced significantly by introducing a circular aperture of optimum radius after the fiber.",

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AU - Broderick, N. G.R.

AU - Richardson, David J.

AU - Lewi, Tomer

AU - Katzir, Abraham

PY - 2009/2/2

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AB - We present an improved theoretical model to estimate the minimum fiber length required for achieving a desired degree of wavefront filtering in stellar interferometry. The proposed model is based on modal analysis of the fiber and is compared with numerical results obtained through the beam propagation method as well as with reported experimental observations. We also study the effect of introducing a spatial filter at the output end of the fiber and show that the required fiber length can be reduced significantly by introducing a circular aperture of optimum radius after the fiber.

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Improved method for estimating the minimum length of modal filters fabricated for stellar interferometry

Abstract

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