Water diffusion into UV inscripted long period grating in microstructured polymer fibre

D. Sáez-Rodríguez, J.L. Cruz, I. Johnson, D.J. Webb, M.C.J. Large, A. Argyros

Research output: Contribution to journalArticlepeer-review

Abstract

A long period grating was photoinscribed step-by-step in microstructured poly(methyl methacrylate) fiber for the first time using a continuous wave HeCd laser at 325 nm, irradiating the fiber with a power of 1 mW. The grating had a length of 2 cm and a period of 1 mm. A series of cladding mode coupling resonances were observed throughout the spectral region studied of 600 to 1100 nm. The resonance wavelengths were shown to be sensitive to the diffusion of water into the fiber.
Original languageEnglish
Article number5466483
Pages (from-to)1169-1173
Number of pages5
JournalIEEE Sensors Journal
Volume10
Issue number7
DOIs
Publication statusPublished - Jul 2010

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Keywords

  • humidity
  • long period grating
  • microstructured polymer optical fiber
  • optical fiber sensor
  • photonic crystal fiber

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