| DOI | Resolve DOI: https://doi.org/10.1109/JSEN.2020.2995606 |
|---|
| Author | Search for: Wang, MohanORCID identifier: https://orcid.org/0000-0001-6678-4993; Search for: Zhao, Kehao; Search for: Huang, Sheng; Search for: Wu, Jingyu; Search for: Lu, Ping1ORCID identifier: https://orcid.org/0000-0002-8610-4032; Search for: Ohodnicki, Paul R.; Search for: Lu, PingORCID identifier: https://orcid.org/0000-0002-9201-0956; Search for: Li, Ming-JunORCID identifier: https://orcid.org/0000-0003-4141-6670; Search for: Mihailov, Stephen J.1ORCID identifier: https://orcid.org/0000-0002-6144-0937; Search for: Chen, Kevin P.ORCID identifier: https://orcid.org/0000-0003-1595-4475 |
|---|
| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
|
|---|
| Format | Text, Article |
|---|
| Subject | micromachining; optical fiber sensors; temperature measurement; ultrafast optics |
|---|
| Abstract | This paper presents a method of reel-to-reel femtosecond laser direct writing that enables the continuous inscription of low-loss and high-temperature stable Rayleigh scattering centers inside the core of single-mode optical fibers for distributed temperature sensing up to 1000°C. By examining the correlation between the Rayleigh backscattering profile and the cross-section morphology of femtosecond laser-induced nanograting in fiber cores, this paper reveals the mechanisms that underlie the fabrication of high-temperature stable distributed fiber sensors with low loss. By fine-tuning laser exposure conditions, the femtosecond laser-fabricated Rayleigh scattering enhanced section could achieve an optimized propagation loss of 0.01 dB/cm with an increased signal-to-noise ratio of over 35 dB for meters of lengths. Long-term high-temperature stability of the Rayleigh scattering enhanced section was successfully demonstrated, with improved thermal stability and signal-to-noise ratio. The fabrication method presented here provides a promising technique to improve the performance of Optical Frequency-Domain Reflectometry based distributed sensing for harsh environment applications. |
|---|
| Publication date | 2020-05-19 |
|---|
| Publisher | IEEE |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 4101a06c-854c-407a-9ff4-f87dea7a71b9 |
|---|
| Record created | 2021-05-25 |
|---|
| Record modified | 2021-05-26 |
|---|
