Abstract
An ultra-short fiber Bragg grating (US-FBG) refractive index (RI) sensor is presented and demonstrated. The US-FBG is composed of a series of cascaded microchannels which carved by femtosecond (fs) laser in the microprobe. According to the simulation results, an US-FBG with length/period of 149.8/5.35 μm is fabricated and used to measure refractive index (RI) of liquids. The experimental results show that the sensitivity of the proposed sensor can reach 600.5622 nm/RIU with a linear response range of 1.3323 to 1.3787. Such a compact size, high sensitivity and the inherent high reliability and ease of modulation of the US-FBG is expected to be used in the field of biosensing related to RI.
PDF Article
More Like This
Fiber surface Bragg grating waveguide for refractive index measurements
Chupao Lin, Changrui Liao, Jia Wang, Jun He, Ying Wang, Zhengyong Li, Tianhang Yang, Feng Zhu, Kaiming Yang, Zhe Zhang, and Yiping Wang
Opt. Lett. 42(9) 1684-1687 (2017)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription