Kim Hyun-Min, Kim Tae-Hun, Kim Bongkyun, Chung Youngjoo
Department of Information and Communications, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju, 500-712, South Korea.
Appl Opt. 2010 Jul 10;49(20):3841-5. doi: 10.1364/AO.49.003841.
We report on a transverse load sensor with enhanced sensitivity through the use of a birefringent interferometer based on a highly birefringent photonic crystal fiber (HB-PCF). The transverse load sensitivity can be enhanced by using a fabricated HB-PCF having larger air holes on its fast axis. The transverse load sensitivity was measured to be high: approximately 2.17 nm/(N/cm). The temperature-induced undesirable effects can be ignored because transmission outputs of our HB-PCF were stable with the change of the temperature. The sensing probe can be compact because of its high birefringence with the order of 10(-3) and no bending loss.
我们报道了一种通过使用基于高双折射光子晶体光纤（HB-PCF）的双折射干涉仪来提高灵敏度的横向负载传感器。通过使用在其快轴上具有更大气孔的预制HB-PCF，可以提高横向负载灵敏度。测得横向负载灵敏度很高：约为2.17 nm/(N/cm)。由于我们的HB-PCF的传输输出随温度变化稳定，因此可以忽略温度引起的不良影响。由于其高达10^(-3)量级的高双折射且无弯曲损耗，传感探头可以做得很紧凑。
