Characterizing octagonal and rectangular fibers for MAROON-X

We report on the scrambling performance and focal-ratio-degradation (FRD) of various octagonal and rectangular fibers considered for MAROON-X. Our measurements demonstrate the detrimental effect of thin claddings on the FRD of octagonal and rectangular fibers and that stress induced at the connector...

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Bibliographic Details
Published in:arXiv.org 2016-07
Main Authors: Sutherland, Adam P, Stürmer, Julian, Miller, Katrina R, Seifahrt, Andreas, Bean, Jacob L
Format: Article
Language:English
Subjects:
Cladding
Claddings
Connectors
Fibers
Performance degradation
Online Access:Get full text
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Summary:We report on the scrambling performance and focal-ratio-degradation (FRD) of various octagonal and rectangular fibers considered for MAROON-X. Our measurements demonstrate the detrimental effect of thin claddings on the FRD of octagonal and rectangular fibers and that stress induced at the connectors can further increase the FRD. We find that fibers with a thick, round cladding show low FRD. We further demonstrate that the scrambling behavior of non-circular fibers is often complex and introduce a new metric to fully capture non-linear scrambling performance, leading to much lower scrambling gain values than are typically reported in the literature (
ISSN:2331-8422
DOI:10.48550/arxiv.1607.02490