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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Combining module based on coherent polarization beam combining.

Yan Yang, Chao Geng, Feng Li

|March 2, 2017

Summary

This summary is machine-generated.

This study introduces a novel coherent polarization beam combining module to efficiently merge multiple laser beams for free-space laser communications. The module overcomes optical disturbances, enhancing system performance and enabling reliable data transmission.

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Area of Science:

Optical Engineering
Telecommunications
Laser Physics

Background:

Coherent free-space laser communications face challenges from random optical disturbances.
Multiaperture receivers with phased arrays are crucial for mitigating these disturbances.
Efficiently combining multiple received laser beams is a key technological hurdle.

Purpose of the Study:

To propose a novel combining module for multiaperture receivers in coherent free-space laser communications.
To achieve high combining efficiency and output a linearly polarized beam.
To validate the module's feasibility and expansibility through experiments.

Main Methods:

Development of a combining module based on coherent polarization beam combining (CPBC).
Analysis of the coherent polarization combining efficiency.
Experimental validation using active phase-locking techniques.

Main Results:

The proposed CPBC module demonstrates high efficiency in combining multiple laser beams.
The module successfully outputs a single, linearly polarized beam.
Experimental results confirm the feasibility and expansibility of the CPBC approach.

Conclusions:

The developed CPBC module is an effective solution for beam combination in phased array receivers for free-space laser communications.
The technology offers a viable path to overcoming optical disturbances and improving communication reliability.
The proposed method shows promise for scalable and efficient laser beam combining.