Аннотация
A stable single wavelength random fiber laser (RFL) with a partial-reflection random fiber grating (PR-RFG) for high temperature sensing is proposed and demonstrated for the first time, to the best of our knowledge. The PR-RFG is fabricated with the help of a femtosecond laser, with its highest reflection peak significantly higher than all other reflection peaks, which can ensure the stability of this filter-free RFL. Theoretical calculations also show that such a PR-RFG should be designed with reflectivity in the range of ∼30%−90% to obtain one reflection peak significantly higher than other peaks. The threshold of this laser is only 6.4 mW. In addition, the RFL realizes temperature sensing in the range from 25◦C to 500◦C and has an optical signal-to-noise ratio of up to 70 dB.
Язык оригинала | английский |
---|---|
Страницы (с-по) | 957-960 |
Число страниц | 4 |
Журнал | Optics Letters |
Том | 46 |
Номер выпуска | 5 |
DOI | |
Состояние | Опубликовано - 1 мар 2021 |
Предметные области OECD FOS+WOS
- 1.03.UH ФИЗИКА, АТОМНАЯ, МОЛЕКУЛЯРНАЯ И ХИМИЧЕСКАЯ
- 1.03.SY ОПТИКА