Au-coated tilted fiber Bragg grating twist sensor based on surface plasmon resonance

作者：Shen, Changyu^*; Zhang, Yang; Zhou, Wenjun; Albert, Jacques

来源：Applied Physics Letters, 2014, 104(7): 071106.

DOI：10.1063/1.4865932

• PHOTONIC CRYSTAL FIBER
• SAGNAC INTERFEROMETER
• TORSION SENSOR
• OPTICAL-FIBER
• SENSITIVITY
• STRAIN
• LASER

A fiber twist sensor based on the surface plasmon resonance (SPR) effect of an Au-coated tilted fiber Bragg grating (TFBG) is proposed. The SPR response to the twist effect on an Au-coated TFBG (immersing in distilled water) is studied theoretically and experimentally. The results show that the transmission power around the wavelength of SPR changes with the twist angle. For the twist ranging from 0 degrees to 180 degrees in clockwise or anti-clockwise directions, the proposed sensor shows sensitivities of 0.037 dBm/degrees (S-polarized) and 0.039 dBm/degrees (P-polarized), which are almost 7.5 times higher than that of the current similar existing twist sensor.

• 出版日期2014-2-17
• 单位中国计量大学