Characterization of external refractive index sensitivity of a photonic crystal fiber long-period grating

0448966 - ÚFE 2016 RIV CN eng J - Journal Article
Tian, F. - Kaňka, Jiří - Du, H.
Characterization of external refractive index sensitivity of a photonic crystal fiber long-period grating.
Chinese Optics Letters. Roč. 13, č. 7 (2015), s. 0705011-0705013. ISSN 1671-7694. E-ISSN 1671-7694
R&D Projects: GA MŠMT(CZ) LH11038
Institutional support: RVO:67985882
Keywords : Carbon dioxide lasers * Crystal whiskers * Optical fiber fabrication
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering
Impact factor: 1.899, year: 2015

Long-period gratings (LPGs) are fabricated in a photonic crystal fiber (PCF) using the symmetric pointby- point CO2 laser irradiation method to explore the sensitivity characterization of PCF-LPG. Numerical simulation is used to guide the investigation. It is found that the refractive index (RI) sensitivity of PCF-LPG depends on the coupled cladding modes as well as the coupled resonance wavelength (RW) of the LPG. Experimental studies show that the longer the RW, the higher the RI sensitivity for the same cladding mode. At similar RWs, the lower the cladding mode, the higher the RI sensitivity of PCF-LPG
Permanent Link: http://hdl.handle.net/11104/0250562