CO2 laser-inscribed low-cost, shortest-period long-period fibre grating in B–Ge co-doped fibre for high-sensitivity strain measurement

Pramana

Sanjay Kher¹  S M Oak¹  Smita Chaubey1¹  Jai Kishore¹ 

[1] Raja Ramanna Centre for Advanced Technology, Indore 452 013, India$$

关键词: Fibre-optic sensors;    turnaround point-long-period fibre grating;    strain.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We have developed high sensitivity long-period fibre gratings (LPGs) in B–Ge codoped fibre for strain sensing application. These LPGs are shortest grating period (180 𝜇m) LPGs inscribed in B–Ge co-doped fibre using CO2 laser-based grating inscription set-up. Strain sensitivity of 1.77 dB/mε has been obtained for attenuation band corresponding to the turnaround point mode. TAP operation of LPG facilitates intensity-based detection using simple optical power meter instead of wavelength-based detection.

【 授权许可】

Unknown