Suppression of the Thermal Effects in the Femtosecond Laser Processing of Fiber Bragg Gratings
CUI Wei, SI Jin-Hai, CHEN Tao**, YAN Fei, CHEN Feng, HOU Xun
Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an 710049
Abstract：The thermal effects on the processing of type-I IR fiber Bragg gratings (FBGs) using a femtosecond laser with a phase mask are investigated. Thermal effects are significantly suppressed by using interval exposure mode and reducing the tension on the fiber. FBGs with improved photo-induced refractive index modulation are fabricated in the standard telecom fiber. The index modulation reaches 1.6×10?3. The reflectivity and bandwidth are measured to be ?0.36 dB and 1.27 nm, respectively.
. [J]. 中国物理快报, 2013, 30(10): 104207-104207.
CUI Wei, SI Jin-Hai, CHEN Tao, YAN Fei, CHEN Feng, HOU Xun. Suppression of the Thermal Effects in the Femtosecond Laser Processing of Fiber Bragg Gratings. Chin. Phys. Lett., 2013, 30(10): 104207-104207.
2013, Vol. 30 
