Title :
Ultrahigh-Temperature Chirped Fiber Bragg Grating Through Thermal Activation
Author :
Xueguang Qiao ; Yupeng Wang ; Hangzhou Yang ; Tuan Guo ; Qiangzhou Rong ; Ling Li ; Dan Su ; Kok-Sing Lim ; Ahmad, Harith
Author_Institution :
Sch. of Phys., Northwest Univ., Xi´an, China
Abstract :
The feasibility of thermal regeneration of chirped fiber Bragg gratings inscribed in commercial single-mode fibers using a 248-nm excimer laser has been experimentally demonstrated. Regenerated chirped gratings (RCGs) with a strong and symmetrical reflection profile can be achieved by 80 min of thermal treatment at a temperature of 800°C. The thermal cycling test results show that the RCGs provide a stable and reproducible spectral response (both in bandwidth and in reflective intensity) over the temperature range from 25°C to 1000°C, indicating their good potentials for fiber laser and sensing applications under high-temperature conditions.
Keywords :
Bragg gratings; excimer lasers; heat treatment; optical fibre testing; excimer laser; fiber laser; high-temperature conditions; reflective intensity; regenerated chirped gratings; sensing applications; single-mode fibers; spectral response; symmetrical reflection profile; temperature 25 degC to 1000 degC; thermal activation; thermal cycling test; thermal regeneration; thermal treatment; time 80 min; ultrahigh-temperature chirped fiber Bragg grating; wavelength 248 nm; Bandwidth; Fiber gratings; Gratings; Optical fiber communication; Optical fiber sensors; Temperature sensors; Chirped fiber Bragg grating; chirped fiber Bragg grating; high temperature; regenerated chirped fiber grating;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2421272
