Fiber-based angular demultiplexer using nanoprinted periodic structures on single-mode multicore fibers.

Area of Science:

• Photonics
• Nanotechnology
• Optical Engineering

Background:

• Precise light beam analysis is crucial for integrated photonics.
• Traditional methods face challenges in compact angular demultiplexing.
• Efficient light collection and analysis are needed for advanced applications.

Purpose of the Study:

• To present a novel fiber-based approach for angular demultiplexing.
• To demonstrate efficient light collection using nanostructure-enhanced multicore fibers.
• To explore applications in telecommunications, sensing, and integrated photonics.

Main Methods:

• Utilizing angle-sensitive coupling in nanostructure-enhanced multicore fibers.
• Employing axially symmetric nanoprinted structures for light distribution.
• Implementing algorithmically optimized nanostructures on a seven-core single-mode fiber facet via 3D nanoprinting.

Main Results:

• Achieved efficient angular demultiplexing through higher diffraction orders.
• Demonstrated unprecedented in-coupling efficiency over wide incident angles.
• Confirmed functionality as both an angular demultiplexer and a remote light collector.

Conclusions:

• The novel fiber-based nanostructure approach offers efficient remote light collection and analysis.
• This technology enables new possibilities for high-capacity telecommunications and sensing.
• The integration of multicore fibers and fiber-based nanostructures advances photonic applications.