All-optical tunable high-order Gaussian beam splitter based on a periodic dielectric atomic structure.

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• High-order Gaussian (HOG) beams are crucial for increasing channel capacity and information processing speed.
• Existing beam splitting methods face limitations in tunability and multi-port capabilities.

Purpose of the Study:

• To propose and demonstrate a novel all-optical tunable multi-port HOG beam splitter.
• To achieve precise control over output beam characteristics for advanced optical communication.

Main Methods:

• Utilizing a periodic dielectric atomic structure for beam splitting.
• Experimental demonstration of a five-port output configuration.
• Tuning optical properties to control spatial position and intensity distribution of output ports.

Main Results:

• A distinguishable five-port output beam splitter for HOG beams was successfully demonstrated.
• Precise control over the spatial position and intensity distribution of each output port was achieved.
• The splitting ratio (δ) was finely adjustable within the range of 0 to 4.8.

Conclusions:

• The proposed device offers a new approach for creating multi-port HOG beam splitters.
• This technology provides a foundation for developing high-speed all-optical communication systems.
• Tunable beam splitting with precise control is essential for next-generation optical networks.