Title :
Refractive index sensitivity of the tilt long-period fiber gratings coated with nano-scale golden film
Author :
Yuchen Zhao ; Yunqi Liu ; Qiang Guo ; Fang Zou ; Tingyun Wang
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China
Abstract :
A novel class of tilt long-period fiber gratings (TLPFGs) coated with nano-scale gold film is introduced, which is at period of 368pm and easy to fabricate. Gold film at nano-scale has been deposited on TLPGs by adopting evaporation technique in Vacuum Film-Sputtering Machine. The experiment results demonstrate that the refractive index sensitivity measured by resonant wavelength shift is raised in the range of 1.441 to 1.475 with outer refractive index change, and the sensitivity measured by contrast is enhanced from -17.35dB/RIU to -57.55dB/RIU in the range of 1.392 to 1.441 with good correlation coefficient.
Keywords :
antireflection coatings; diffraction gratings; evaporation; gold; optical correlation; optical films; refractive index; sputter deposition; Au; TLPFG; correlation coefficient; evaporation; nanoscale gold film; refractive index sensitivity; resonant wavelength shift; tilt long-period fiber gratings; vacuum film-sputtering machine; Fiber gratings; Films; Gold; Gratings; Optical fiber communication; Optical fiber sensors; Refractive index; Refractive Index; Surface Plasmon Resonance; Tilt Long-Period Fiber Gratings;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2013 12th International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ICOCN.2013.6617242
