Femtosecond Laser Inscribed Small-Period Long-Period Fiber Gratings With Dual-Parameter Sensing
| Autor: | Yong-Sen Yu, Zhong-Ming Zheng, Qi Guo, Xuan-Yu Zhang, Hong-Bo Sun |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Optical fiber
Materials science genetic structures business.industry Physics::Optics 02 engineering and technology Grating Laser 01 natural sciences law.invention 010309 optics 020210 optoelectronics & photonics Optics Fiber Bragg grating law Fiber laser 0103 physical sciences Femtosecond 0202 electrical engineering electronic engineering information engineering Fiber Electrical and Electronic Engineering business Instrumentation Refractive index |
| Zdroj: | IEEE Sensors Journal. 18:1100-1103 |
| ISSN: | 2379-9153 1530-437X |
| Popis: | A small-period long-period grating (LPG) with a period of $40\mu \text{m}$ fabricated in a single-mode fiber by femtosecond laser direct writing has been demonstrated. A series of high-order Bragg resonant peaks of Bragg grating and attenuation bands of LPG can be observed simultaneously in the broadband spectrum range that exhibited different responses to surrounding refractive index, temperature, and axial strain. Meanwhile, we provided a sensitivity matrix to correct the errors caused by temperature in measurements of refractive index and strain to achieve a dual-parameter fiber sensor at high temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|