Electrically tunable long-period fiber gratings with low-birefringence liquid crystal near the turn-around point

• Autorzy: Czapla A. , Bock W. J. , Woliński T. R. , Mikulic P. , Dąbrowski R. , Nowinowski-Kruszelnicki E.

Identyfikatory

DOI

10.1016/j.opelre.2017.07.002

• Języki publikacji: EN

Abstrakty

EN

In this work, an electrically tunable long-period fiber grating (LPFG) coated with liquid crystal layer (LC) is presented. As a LC layer, a prototype low-birefringence 1550A LC mixture was chosen. As a LPFG host, two types of gratings were studied: the LPFGs based on a standard telecommunication fiber, produced by an electric arc technique with a period of 222 µm, and the LPFGs based on a boron co-doped fiber written by a UV technique with a period of 226.8 µm. The relatively short period of these gratings allowed exploiting unique sensing properties of the attenuation bands associated with modes close to the turn-around point. Experiments carried out showed that for the UV-induced LPFG with a LC layer, on the powered state the attenuation band could be offset from the attenuation band measured in the unpowered state by almost130 nm. When the arc-induced LPFG was coated with the LC, the depth of the attenuation band could be efficiently controlled by applying an external E-field. Additionally, all experimental results obtained in this work were supported by the theoretical analysis based on a model developed with Optigrating v.4.2 software.

Słowa kluczowe

EN

long period fiber grating; liquid crystal; sensors; electric field

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2017
• Tom: Vol. 25, No. 4
• Strony: 290--295
• Opis fizyczny: Bibliogr. 25 poz., il., rys., wykr.

Twórcy

autor

Czapla A.

• Faculty of Physics, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland

autor

Bock W. J.

• Centre de Recherche en Photonique, Université du Québec en Outaouais, 101 Rue Saint-Jean-Bosco, Gatineau, QC J8X 3X7, Canada

autor

Woliński T. R.

• Faculty of Physics, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland

autor

Mikulic P.

• Centre de Recherche en Photonique, Université du Québec en Outaouais, 101 Rue Saint-Jean-Bosco, Gatineau, QC J8X 3X7, Canada

autor

Dąbrowski R.

• Military University of Technology, 2 Kaliskiego St., 00-908 Warsaw, Poland

autor

Nowinowski-Kruszelnicki E.

• Military University of Technology, 2 Kaliskiego St., 00-908 Warsaw, Poland

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