TY - JOUR
T1 - Characterization of external refractive index sensitivity of a photonic crystal fiber long-period grating
AU - Tian, Fei
AU - Kanka, Jiri
AU - Du, Henry
N1 - Publisher Copyright:
© 2015 Chinese Optics Letters.
PY - 2015/7/10
Y1 - 2015/7/10
N2 - 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.
AB - 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.
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U2 - 10.3788/COL201513.070501
DO - 10.3788/COL201513.070501
M3 - Article
AN - SCOPUS:84939832422
SN - 1671-7694
VL - 13
JO - Chinese Optics Letters
JF - Chinese Optics Letters
IS - 7
M1 - 070501
ER -