Remote multiplexing of holograms with random patterns from multimode fiber bundles

Area of Science:

• Optics and Photonics
• Optical Engineering

Background:

• Holographic data storage and optical communication systems require efficient multiplexing techniques.
• Multimode fiber (MMF) bundles offer potential for compact and integrated optical systems.

Purpose of the Study:

• To propose and investigate a novel method for remote multiplexing of holograms using MMF bundles as reference beams.
• To analyze the performance of different laser coupling methods for remote multiplexing.

Main Methods:

• Utilizing random patterns generated by the superposition and concatenation of propagation modes in MMF and free space as reference beams.
• Comparing direct laser coupling versus lens coupling to the MMF bundle for angle, shift, and wavelength multiplexing.
• Employing mode orthogonality for theoretical analysis of multiplexing characteristics.

Main Results:

• Experimental verification of the theoretical predictions for multiplexing characteristics.
• Demonstration of remote multiplexing capabilities using MMF bundles.
• Comparison of direct and lens coupling methods, highlighting their respective advantages.

Conclusions:

• The proposed remote multiplexing method using MMF bundles is effective for various multiplexing schemes.
• This technique facilitates the construction of compact and integrated optical systems with remote control.
• The findings are applicable to general multimode waveguide arrays for advanced optical applications.