Polarization-controlled optical logic operations in multimode fibers

Area of Science:

• Optical physics
• Information technology

Background:

• Multimode fibers (MMF) exhibit complex speckle patterns due to modal interactions.
• Wavefront shaping techniques offer control over these patterns for applications like optical computing.

Purpose of the Study:

• To design and implement a polarization-controlled reconfigurable logic gate using MMF.
• To demonstrate parallel and multi-bit logic operations through polarization control.

Main Methods:

• Leveraged the high degree of freedom in MMF.
• Implemented wavefront shaping techniques.
• Utilized polarization control to switch between AND and OR logic operations.
• Constructed four parallel logic gates for multi-bit operations.

Main Results:

• Successfully designed a polarization-controlled reconfigurable logic gate.
• Achieved switching between AND and OR logic operations by altering input light polarization.
• Demonstrated parallel, multi-bit logical operations using four independent gates.
• Validated logic functionality reuse and parallel operations via polarization control and transmission matrix optimization.

Conclusions:

• MMF and wavefront shaping enable complex optical logic operations.
• Polarization control is key for reconfigurable and parallel logic in MMF.
• This approach offers a novel pathway for high-throughput optical computing and multifunctional devices.