Structure of 4  ×  2 optical encoder based on hybrid plasmonic waveguides

Area of Science:

• Photonics and Optical Engineering
• Nanotechnology and Plasmonics
• Integrated Optics

Background:

• The development of efficient optical encoders is crucial for high-speed optical communication and computing.
• Hybrid plasmonic structures offer unique properties for light manipulation at the nanoscale, enabling miniaturized optical devices.

Purpose of the Study:

• To propose, analyze, and simulate a novel hybrid plasmonic optical 4x2 encoder.
• To investigate the performance of the encoder based on light wave interference principles.
• To optimize device parameters for high transmission, modulation depth, and contrast ratio.

Main Methods:

• Utilized the finite element method (FEM) for device simulation.
• Employed COMSOL software package for comprehensive analysis.
• Investigated device performance based on constructive and destructive interference of light waves.

Main Results:

• Achieved a maximum transmission value of 68.4% over a wavelength range of 800-2000 nm.
• Demonstrated a high modulation depth of 92.34%.
• Obtained a contrast ratio of 11.1 dB, with analysis of magnetic field distribution and insertion losses.

Conclusions:

• The proposed hybrid plasmonic optical 4x2 encoder exhibits promising performance characteristics.
• The design leverages fundamental interference principles for efficient optical signal manipulation.
• Results indicate suitability for integration into advanced photonic circuits and systems.