Laser & Optoelectronics Progress, Volume. 58, Issue 21, 2106001(2021)
Fabrication of Chalcogenide Fiber with Ridged Core and Its Linearly Polarized Supercontinuum Spectrum Generation
A polarization-maintaining chalcogenide glass fiber with a ridged core was designed and fabricated using Ge12As24Se64 (Ge-As-Se) glass as the core material and Ge10As24S66 (Ge-As-S) glass as the cladding material for generating linearly polarized mid-infrared supercontinuum (MIR SC). The ridged core fiber's group velocity dispersion was simulated using the finite element method, and the ridged core's geometrical size was determined. A multiple-stage rod-in-tube process paired with an extrusion technique was used to fabricate the fiber. The fabricated fiber exhibits a typical transmission loss of approximately 4 dB/m and a polarization extinction ratio of 19.4 dB-19.6 dB in the 2.9-5.5-μm spectral range. SC ranging from 2 to 9.5 μm with an average power of approximately 4 mW was generated when the fiber with a length of 12 cm was pumped by laser with a central wavelength of 3.7 μm, a pulse width of 170 fs, the repetition rate of 100 kHz, and average power of 40 mW. The SC has a measured polarization extinction ratio of 19.2 dB. These results indicate that the Ge-As-Se/Ge-As-S fiber with a ridged core is a promising nonlinear medium for generating linearly polarized broadband MIR SC.
Get Citation
Copy Citation Text
Kangzhen Tian, Yaocheng Li, He Ren, Sisheng Qi, Shuai Meng, Mingjie Zhang, Xian Feng, Zhiyong Yang. Fabrication of Chalcogenide Fiber with Ridged Core and Its Linearly Polarized Supercontinuum Spectrum Generation[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2106001
Category: Fiber Optics and Optical Communications
Received: Feb. 23, 2021
Accepted: Mar. 26, 2021
Published Online: Nov. 1, 2021
The Author Email: Yang Zhiyong (yangzhiyong@jsnu.edu.cn)