Development of Anti-Resonant Hollow Core Fiber for High Power and Mid-Wave Infrared Transmissions
Abstract
A thorough investigation into the design of anti-resonant hollow core fiber has been performed. Using Comsol Multiphysics, each design parameter was studied for how it affected the guidance and loss of the modes of the fiber. This understanding was used to optimize two designs of fiber, one for low loss around 1 micro(m) for high power laser delivery, and the other for broadband transmission in the mid-infrared. The two fiber designs were drawn at UCF, and delivered to the Penn State ARL EOC. A high power testing setup was developed, based on a single mode, 1 kW 1060 nm CW laser. The ARHCF was tested, and powers up to 170 W were able to be coupled into the fiber. Heating at the fiber facet limited the total power able to be coupled into the fiber. Future efforts in high power delivery testing will incorporate end caps in order to mitigate facet heating and improve coupling efficiencies. The mid-infrared fiber was tested with a broadband source, as well as two quantum cascade lasers.We have shown a silica-based ARHCF with guidance up to 4.6 m with relatively low loss, which is a significant improvement over previously published work. This shows that silica-based ARHCF can be a viable option for MWIR transmission in the 3-5 m region, an important atmospheric window for applications such as infrared counter measures and remote sensing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 03, 2022
- Accession Number
- AD1230679
Entities
People
- Amy Van Newkirk
Organizations
- Pennsylvania State University