Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/130661
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Type: Journal article
Title: Design considerations for graded index fiber tip Fabry-Perot interferometers
Author: Riesen, N.
Phillips, N.
Nguyen, L.
Warren-Smith, S.C.
Priest, C.
Lancaster, D.G.
Citation: Measurement Science and Technology, 2021; 32(5):055201-1-055201-6
Publisher: IOP Publishing
Issue Date: 2021
ISSN: 0957-0233
1361-6501
Statement of
Responsibility: 
Nicolas Riesen, Nicholas Phillips, Linh V Nguyen, Stephen C Warren-Smith, Craig Priest and David G Lancaster
Abstract: An analysis is provided of fiber-optic Fabry–Perot interferometers designed and fabricated using collimating graded-index fiber (GIF) tips as an alternative to typical highly divergent standard single-mode fibers (SMFs). The collimated beam from the GIF tips allows for significantly longer etalons to be fabricated due to the increased collection efficiency when used either in reflection or transmission mode. We extend previous results, showing that GIF tips using coreless fiber segments can allow for up to four-fold increase in fringe visibility (FV) at 1550 nm compared with standard SMF Fabry–Perot etalons of the same length. The collimating GIF tips help lessen the FV vs cavity length trade-off typically observed in fiber-optic Fabry–Perot systems. We also explore the effects on FV improvement when using capillaries to align the fibres. This paper also provides easily accessible design guidelines and considerations for fabricating GIF based devices at 1550 nm.
Keywords: Fabry–Perot interferometers; fiber sensing; graded-index fiber tips
Rights: © 2021 IOP Publishing Ltd
RMID: 1000038738
DOI: 10.1088/1361-6501/abe0d8
Grant ID: http://purl.org/au-research/grants/arc/IH150100028
http://purl.org/au-research/grants/arc/CE14010003
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