Design and optimization of C6H5NO2-core photonic crystal fibers of broadband supercontinuum generation with low peak power
Tác giả: Van Trong Dang and Van Lanh Chu
Crystal Research and Technology
Quyển: 58 Trang: 9
Năm xuất bản: 9/2023
Tóm tắt
This study presents a new square-lattice photonic crystal fiber (PCF) with a
nitrobenzene core. Considering the non-uniformity of the air hole diameter,
this new design allows the characteristic quantities to be optimized
simultaneously to ensure near-zero dispersion, a small effective mode area,
and low loss for efficient spectral broadening. The spectrum broadens
significantly at peak powers many times lower than in previous studies. Based
on the obtained results, two optimal PCFs are proposed and validated in detail
for supercontinuum generation (SCG). The first fiber #F1 operates in an
all-normal dispersion regime with a pump wavelength of 1.3 μm.It produces a
spectral supecontinuum (SC) from 0.726 to 1.649 μm with a pulse duration of
90 fs and a peak power of 133 W. Meanwhile, the second fiber #F2 operates in
anomalous dispersion regime with a pump wavelength of 1.61 μm. With a low
peak power of 300 W and a pulse duration of 150 fs, the fiber #F2 provides SC
generation with bandwidth from 0.805 μm to 3.970 μm. The proposed fibers
are suitable for all-fiber SC light sources, respectively, and may lead to new
low-cost all-fiber optical systems.
