| Title: |
High-Resolution Interferometric Temperature Sensor Based on Two DFB Fiber Lasers with High-Temperature Monitoring Potential |
| Authors: |
Mikhail I. Skvortsov; Kseniya V. Kolosova; Alexander V. Dostovalov; Evgeniy V. Golikov; Alexander A. Vlasov; Sofia R. Abdullina; Andrey A. Rybaltovsky; Denis S. Lipatov; Aleksey S. Lobanov; Mikhail E. Likhachev; Olga N. Egorova; Sergey A. Babin |
| Source: |
Photonics ; Volume 12 ; Issue 10 ; Pages: 1019 |
| Publisher Information: |
Multidisciplinary Digital Publishing Institute |
| Publication Year: |
2025 |
| Collection: |
MDPI Open Access Publishing |
| Subject Terms: |
narrow linewidth; temperature sensor; high temperature measurements |
| Description: |
A high-resolution temperature sensor using the beat frequency measurement between the modes of two DFB fiber lasers is presented. The laser cavities are formed by the femtosecond inscription technique in a highly Er/Yb co-doped phosphosilicate fiber with low optical losses and compact design. The experimental results show a sensitivity of 1 GHz/°C, leading to a temperature resolution of 0.02 °C restricted by the thermistor used in the experiment. The maximum possible resolution determined by the laser linewidth is estimated as 2 × 10−6 °C. The operation of such a sensor at high temperatures (≈750 °C) with the possibility of further temperature increase is demonstrated. The combination of high resolution and broad temperature range makes the sensor attractive for various applications, especially in high-temperature monitoring. |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
Lasers, Light Sources and Sensors; https://dx.doi.org/10.3390/photonics12101019 |
| DOI: |
10.3390/photonics12101019 |
| Availability: |
https://doi.org/10.3390/photonics12101019 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.1C349466 |
| Database: |
BASE |