6533b82dfe1ef96bd1290957
RESEARCH PRODUCT
Fabrication of long period fiber gratings of subnanometric bandwidth.
Miguel V. AndrésXavier Roselló-mechóL. Poveda-wongMartina Delgado-pinarAntonio DiezJose L. Cruzsubject
Materials scienceFabrication02 engineering and technologyGratingFiber optics01 natural sciencesMultiplexing010309 optics020210 optoelectronics & photonicsOptics0103 physical sciences0202 electrical engineering electronic engineering information engineeringFiber Bragg gratingsbusiness.industryFiber optics sensorsResonanceCladding modePolarization (waves)Atomic and Molecular Physics and OpticsUNESCO::FÍSICA::Óptica ::Fibras ópticasFull width at half maximum:FÍSICA::Óptica ::Fibras ópticas [UNESCO]Fourier optics and signal processingbusinessRefractive indexFree spectral rangedescription
This paper reports on the fabrication of long period fiber gratings having subnanometric bandwidth in the 1500 nm spectral region. Large gratings have been photo-inscribed in a high NA fiber, the grating pitch and the order of the HE cladding mode are optimized to produce gratings with a large number of periods and preventing the coupling to TE, TM or EH modes. Resonances with a FWHM of 0.83 nm and 0.68 nm have been achieved for gratings 15 and 20 cm long respectively, the free spectral range between transmission notches is 125 nm. The polarization effects and the sensitivity of the gratings to temperature and to strain variations are presented as well. © 2015 Optical Society of America This paper reports on the fabrication of long period fiber gratings having subnanometric bandwidth in the 1500 nm spectral region. Large gratings have been photo-inscribed in a high NA fiber, the grating pitch and the order of the HE cladding mode are optimized to produce gratings with a large number of periods and preventing the coupling to TE, TM or EH modes. Resonances with a FWHM of 0.83 nm and 0.68 nm have been achieved for gratings 15 and 20 cm long respectively, the free spectral range between transmission notches is 125 nm. The polarization effects and the sensitivity of the gratings to temperature and to strain variations are presented as well. © 2015 Optical Society of America
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | Optics letters |