Systematic design of full phase compensation microprism-type low-loss bent waveguides

Area of Science:

• Optics and Photonics
• Waveguide Design
• Integrated Optics

Background:

• Traditional microprism bent waveguides often neglect certain optical paths for phase compensation.
• Incomplete phase compensation can lead to signal loss in bent waveguide structures.

Purpose of the Study:

• To propose a systematic design rule for optimal phase matching in bent waveguides.
• To achieve full phase compensation by considering all optical paths.
• To improve signal transmission efficiency in bent optical devices.

Main Methods:

• Development of a systematic design rule for bent waveguides.
• Utilizing the fast Fourier transform beam propagation method for simulations.
• Analysis of optical paths for full phase compensation.

Main Results:

• Simulated results demonstrate normalized transmitted powers exceeding 95%.
• The design rule is effective even for large bent angles up to 10 degrees.
• Full phase compensation was achieved through comprehensive optical path consideration.

Conclusions:

• The proposed systematic design rule enables efficient phase matching in bent waveguides.
• This approach significantly enhances signal transmission in optical devices with bends.
• The method offers a robust solution for high-performance integrated optical components.