中国物理B ›› 2017, Vol. 26 ›› Issue (10): 100702-100702.doi: 10.1088/1674-1056/26/10/100702
Wa Jin(金娃), Wei-Hong Bi(毕卫红), Guang-Wei Fu(付广伟)
Wa Jin(金娃)1,2, Wei-Hong Bi(毕卫红)1,2, Guang-Wei Fu(付广伟)1,2
摘要:
We report the fabrication of long-period gratings (LPGs) in elliptical microfibers with femtosecond laser. Based on the numerical analysis of the modes and the mode coupling condition of elliptical microfibers, an LPG is fabricated with a very short pitch of 10 μm by periodically modifying the fiber surface, which demonstrates very strong polarization-dependent resonances, a very low temperature sensitivity of a few picometers in air, and high temperature sensitivity of -1.62 nm/℃ in refractive index oil.
中图分类号: (Fiber-optic instruments)