Highly-Sensitive and -Linear Cryogenic Temperature Response of Long-Period Fiber Gratings Written on B-Ge-Codoped Photosensitive Fiber

作者：Choi Daeho^*; Kim Jihoon; Roh Sookyoung; Lee Byoungho; Lee Yong Wook

来源：Japanese Journal of Applied Physics, 2012, 51(9): 092501.

DOI：10.1143/JJAP.51.092501

In this paper, we report the highly-sensitive and -linear cryogenic temperature response of long-period fiber gratings (LPFGs) written on B-Ge-codoped photosensitive single-mode fiber. The resonance wavelength of the fabricated LPFG was monitored at a temperature range from 77 to 295 K. The temperature sensitivity of the resonance wavelength was measured as similar to 398 pm/K, which was higher than that of fiber grating sensors in a comparable cryogenic temperature range reported by other research groups. In particular, the linearity of the temperature response curve was very good (R-2 value of similar to 0.9979).

• 出版日期2012-9