A simple method for metal re-coating of optical fibre Bragg gratings

Stefan Sandlin (Corresponding Author), Tuomo Kinnunen, Jaakko Rämö, Mika Sillanpää

Research output: Contribution to journalArticleScientificpeer-review

56 Citations (Scopus)

Abstract

This study presents a simple method for metal re-coating of silica optical fibre Bragg gratings. No vacuum techniques or any high-temperature methods such as dip or melt coating techniques are required. Optical fibres with metallic coatings such as aluminium, copper, tin and gold are commercially readily available. These coatings are usually applied in connection with the fibre drawing process, and these coating techniques cannot be used for coating existing fibres. Bragg-gratings are often written into the optical fibre after the original coating has been removed and therefore the fibre needs to be re-coated subsequent to the writing process in order to protect the fibre. Since no company providing metallic re-coating services was located, the coating process had to be developed. Researchers developing for instance high-temperature fibre optical Bragg-grating sensors will need a simple and cheap method for metal coating of fibres. The coating method presented in this work is developed with emphasis to further embedding the coated fibres into solid metal using, for example, vacuum brazing techniques. The method is based on electroplating, and therefore, the fibres can be coated with any metal or metal alloy applicable by this technique.
Original languageEnglish
Pages (from-to)3061-3065
Number of pages5
JournalSurface and Coatings Technology
Volume201
Issue number6
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Fiber Bragg gratings
Bragg gratings
Optical fibers
optical fibers
Metals
coatings
Coatings
fibers
Fibers
coating
metals
Coating techniques
Vacuum brazing
brazing
metal coatings
vacuum
Metal coatings
electroplating
Tin
Electroplating

Keywords

  • Bragg grating
  • in-fibre bragg grating
  • coatings
  • re-coating
  • electroplating
  • metal coated optical fibre
  • optical fibers

Cite this

Sandlin, Stefan ; Kinnunen, Tuomo ; Rämö, Jaakko ; Sillanpää, Mika. / A simple method for metal re-coating of optical fibre Bragg gratings. In: Surface and Coatings Technology. 2006 ; Vol. 201, No. 6. pp. 3061-3065.
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abstract = "This study presents a simple method for metal re-coating of silica optical fibre Bragg gratings. No vacuum techniques or any high-temperature methods such as dip or melt coating techniques are required. Optical fibres with metallic coatings such as aluminium, copper, tin and gold are commercially readily available. These coatings are usually applied in connection with the fibre drawing process, and these coating techniques cannot be used for coating existing fibres. Bragg-gratings are often written into the optical fibre after the original coating has been removed and therefore the fibre needs to be re-coated subsequent to the writing process in order to protect the fibre. Since no company providing metallic re-coating services was located, the coating process had to be developed. Researchers developing for instance high-temperature fibre optical Bragg-grating sensors will need a simple and cheap method for metal coating of fibres. The coating method presented in this work is developed with emphasis to further embedding the coated fibres into solid metal using, for example, vacuum brazing techniques. The method is based on electroplating, and therefore, the fibres can be coated with any metal or metal alloy applicable by this technique.",
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A simple method for metal re-coating of optical fibre Bragg gratings. / Sandlin, Stefan (Corresponding Author); Kinnunen, Tuomo; Rämö, Jaakko; Sillanpää, Mika.

In: Surface and Coatings Technology, Vol. 201, No. 6, 2006, p. 3061-3065.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - A simple method for metal re-coating of optical fibre Bragg gratings

AU - Sandlin, Stefan

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N2 - This study presents a simple method for metal re-coating of silica optical fibre Bragg gratings. No vacuum techniques or any high-temperature methods such as dip or melt coating techniques are required. Optical fibres with metallic coatings such as aluminium, copper, tin and gold are commercially readily available. These coatings are usually applied in connection with the fibre drawing process, and these coating techniques cannot be used for coating existing fibres. Bragg-gratings are often written into the optical fibre after the original coating has been removed and therefore the fibre needs to be re-coated subsequent to the writing process in order to protect the fibre. Since no company providing metallic re-coating services was located, the coating process had to be developed. Researchers developing for instance high-temperature fibre optical Bragg-grating sensors will need a simple and cheap method for metal coating of fibres. The coating method presented in this work is developed with emphasis to further embedding the coated fibres into solid metal using, for example, vacuum brazing techniques. The method is based on electroplating, and therefore, the fibres can be coated with any metal or metal alloy applicable by this technique.

AB - This study presents a simple method for metal re-coating of silica optical fibre Bragg gratings. No vacuum techniques or any high-temperature methods such as dip or melt coating techniques are required. Optical fibres with metallic coatings such as aluminium, copper, tin and gold are commercially readily available. These coatings are usually applied in connection with the fibre drawing process, and these coating techniques cannot be used for coating existing fibres. Bragg-gratings are often written into the optical fibre after the original coating has been removed and therefore the fibre needs to be re-coated subsequent to the writing process in order to protect the fibre. Since no company providing metallic re-coating services was located, the coating process had to be developed. Researchers developing for instance high-temperature fibre optical Bragg-grating sensors will need a simple and cheap method for metal coating of fibres. The coating method presented in this work is developed with emphasis to further embedding the coated fibres into solid metal using, for example, vacuum brazing techniques. The method is based on electroplating, and therefore, the fibres can be coated with any metal or metal alloy applicable by this technique.

KW - Bragg grating

KW - in-fibre bragg grating

KW - coatings

KW - re-coating

KW - electroplating

KW - metal coated optical fibre

KW - optical fibers

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