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

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Published on: September 5, 2019

Power splitters with different output power levels based on directional coupling.

Afshin Ghaffari¹, Mehrdad Djavid, Mohammad Sadegh Abrishamian

¹Department of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran. afshin.ghafari@ee.kntu.ac.ir

|March 12, 2009

Summary

This summary is machine-generated.

This study numerically investigates a wideband photonic crystal power splitter. Researchers optimized output power levels and transmission by adjusting coupling parameters for a four-branch device.

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Area of Science:

Photonics
Optical Engineering
Materials Science

Background:

Photonic crystal devices offer unique light manipulation properties.
Power splitters are fundamental components in optical integrated circuits.
Directional coupling is a key mechanism for power division in photonic devices.

Purpose of the Study:

To numerically investigate the properties of a wideband photonic crystal power splitter.
To analyze the impact of coupling length and rod radius on output power.
To propose a four-output branch power splitter design.

Main Methods:

Numerical simulation using the finite-difference time-domain (FDTD) method.
Analysis of transmission characteristics based on structural parameters.
Design optimization through parameter variation.

Main Results:

The study identified key relationships between coupling parameters and output power levels.
Transmission characteristics were successfully modulated by adjusting coupling length and rod radius.
A functional four-output branch power splitter design was proposed based on these findings.

Conclusions:

Wideband photonic crystal power splitters can be effectively designed using directional coupling.
Finite-difference time-domain simulations provide accurate insights into device performance.
The proposed four-branch splitter demonstrates potential for advanced optical systems.