High-quality phase-shifted Bragg grating sensor inscribed with only one laser pulse in a polymer optical fiber

C. A. F. Marques, A. Pospori, L. Pereira, S. Marques, Paula Soares Martins Antunes, Ole Bang, D. J. Webb, P. Andre

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

We present the first phase-shifted polymer optical fiber Bragg grating sensor inscribed with only one KrF laser pulse. The phase shift defect was created directly during the grating inscription process by placing a very narrow blocking aperture, in the center of the UV beam. One laser pulse with a duration of 15 ns and energy 6.3 mJ is adequate to introduce a refractive index change of 0.69×10−4 in the fiber core. The high-quality produced Bragg grating structure rejects 16.3 dB transmitted power, thus providing 97.6% reflectivity, which is well suited for photonic applications. The transmission notch depth is about 10 dB and very sharp notches of 3 dB width ranging from 14 pm is reported. The temperature, strain, and pressure response of the sensor has been characterized showing promising results in applications that require high-precision measurements. The ability to inscribe these high-quality sensors effectively can significantly reduce their production cost in industry.
Original languageEnglish
Title of host publicationProceedings of 2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference
Number of pages4
PublisherIEEE
Publication date2017
Pages1-4
ISBN (Print)9783800742745
DOIs
Publication statusPublished - 2017
Event2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) - Águas de Lindoia, Brazil
Duration: 27 Aug 201730 Aug 2017
https://www.imoc2017.com/

Conference

Conference2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)
CountryBrazil
CityÁguas de Lindoia
Period27/08/201730/08/2017
Internet address

Keywords

  • Optical fibers
  • Fiber gratings
  • Polymers
  • Optical fiber sensors
  • Fiber lasers
  • Gratings
  • Optical sensors
  • polymer fibers
  • fiber Bragg gratings
  • phase-shift
  • annealing

Cite this

Marques, C. A. F., Pospori, A., Pereira, L., Marques, S., Antunes, P. S. M., Bang, O., Webb, D. J., & Andre, P. (2017). High-quality phase-shifted Bragg grating sensor inscribed with only one laser pulse in a polymer optical fiber. In Proceedings of 2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (pp. 1-4). IEEE. https://doi.org/10.1109/IMOC.2017.8121046