Strain sensitivity of long period gratings in hollow-core photonic bandgap fibers

Long Jin, Wei Jin, Jian Ju

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

We investigate the strain sensitivity of long period gratings (LPGs) fabricated in hollow-core photonic bandgap fibers (HC-PBFs). The LPGs are fabricated by periodically deforming the air-holes along the PBFs by use of a CO2laser. Resonant couplings between the LP01and LP11core modes results in two highly polarization-dependant loss dips in the transmission spectrum. The sensitivity of the resonant wavelength to strain was found to vary from -1.48 to -2.4 pm/με when the grating pitch was changed from 225 to 175 μm. Theoretical investigation suggests that the size and shape of the core can have significant influence on the strain sensitivity.
Original languageEnglish
Title of host publication21st International Conference on Optical Fiber Sensors
Volume7753
DOIs
Publication statusPublished - 9 Jun 2011
Event21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada
Duration: 15 May 201119 May 2011

Conference

Conference21st International Conference on Optical Fiber Sensors
CountryCanada
CityOttawa, ON
Period15/05/1119/05/11

Keywords

  • Long period gratings
  • Photonic bandgap fibers
  • Photonic crystal fibers
  • Strain measurement

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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