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

Improved method for estimating the minimum length of modal filters fabricated for stellar interferometry
Improved method for estimating the minimum length of modal filters fabricated for stellar interferometry
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.
1094-4087
1935-1946
Dasgupta, Sonali
43e5e81a-3da3-4ba5-a5f4-2abe6301fc71
Broderick, N.G.
1b3f7d34-4fd4-4ec5-9b90-c3cfb176f757
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Lewi, Tomer
9a1309e7-d883-4df5-a394-23f132236c73
Katzir, Abraham
11f5de98-1432-4d21-9087-6a0d938f3baf
Dasgupta, Sonali
43e5e81a-3da3-4ba5-a5f4-2abe6301fc71
Broderick, N.G.
1b3f7d34-4fd4-4ec5-9b90-c3cfb176f757
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Lewi, Tomer
9a1309e7-d883-4df5-a394-23f132236c73
Katzir, Abraham
11f5de98-1432-4d21-9087-6a0d938f3baf

Dasgupta, Sonali, Broderick, N.G., Richardson, David J., Lewi, Tomer and Katzir, Abraham (2009) Improved method for estimating the minimum length of modal filters fabricated for stellar interferometry. Optics Express, 17 (3), 1935-1946. (doi:10.1364/OE.17.001935).

Record type: Article

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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Published date: 2 February 2009

Identifiers

Local EPrints ID: 65821
URI: https://eprints.soton.ac.uk/id/eprint/65821
ISSN: 1094-4087
PURE UUID: eecc5c42-1bcd-4f8b-9b05-d4610e16f6be
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 20 Mar 2009
Last modified: 05 Dec 2019 01:39

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Contributors

Author: Sonali Dasgupta
Author: N.G. Broderick
Author: Tomer Lewi
Author: Abraham Katzir

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