Orbital Angular Momentum Mode Propagation and Supercontinuum Generation in a Soft Glass Bragg Fiber
This manuscript presents a ring-core Bragg Fiber (RC-BF) for orbital angular momentum (OAM) modes propagation and supercontinuum generation. The proposed RC-BF is composed of alternating layers of soft glasses SF57 and LLF1 to render high nonlinearity to the fiber. Mode analysis using full-vectorial...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10138574/ |
| Summary: | This manuscript presents a ring-core Bragg Fiber (RC-BF) for orbital angular momentum (OAM) modes propagation and supercontinuum generation. The proposed RC-BF is composed of alternating layers of soft glasses SF57 and LLF1 to render high nonlinearity to the fiber. Mode analysis using full-vectorial finite element method resulted in obtaining HE/EH modes to support vector modes as well as orbital angular momentum modes. The optimized fiber supports 22 OAM modes and exhibits a zero-dispersion wavelength (ZDW). The small effective area of Fiber 3 aided in achieving the highest nonlinearity, <inline-formula> <tex-math notation="LaTeX">$\gamma $ </tex-math></inline-formula> = 91.51 <inline-formula> <tex-math notation="LaTeX">$\text{W}^{-1}$ </tex-math></inline-formula>km<inline-formula> <tex-math notation="LaTeX">$^{-1}$ </tex-math></inline-formula>. A near-infrared supercontinuum is generated with a 35 dB flatness over a bandwidth of <inline-formula> <tex-math notation="LaTeX">$\sim $ </tex-math></inline-formula>1087 - 2024 nm in a 20 cm long RC-BF using a chirp-free hyperbolic secant pulse of width 200 fs and peak power of 5 kW. |
|---|---|
| ISSN: | 2169-3536 |