Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442371 | Optical Materials | 2017 | 7 Pages |
Abstract
We propose an As2Se3-based photonic quasi-crystal fiber (PQF) with high nonlinearity and birefringence. By optimizing the structure parameters, a nonlinear coefficient up to 2079 Wâ1kmâ1 can be achieved at the wavelength of 2 μm; the birefringence reaches up to the order of 10â2 due to the introduction of large circular air holes in the cladding. Using an optical pulse with a peak power of 6 kW, a pulse width of 150 fs, and a central wavelength of 2.94 μm as the pump pulse, a mid-infrared polarized supercontinuum is obtained by using a 15 mm long PQF. The spectral width for x- and y-polarizations covers 1 μm-10.2 μm and 1 μm-12.5 μm, respectively. The polarization state can be well maintained when the incident angle of the input pulse changes within ±2°. The proposed PQF, with high nonlinear coefficient and birefringence, has potential applications in mid-infrared polarization-maintaining supercontinuum generation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Tongtong Zhao, Zhenggang Lian, Trevor Benson, Xin Wang, Wan Zhang, Shuqin Lou,