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Compact wavelength splitter based on self-imaging principles in Bragg reflection waveguides.

Bing Chen¹, Lin Huang, Yongdong Li

¹Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, China. chenbing1975@hotmail.com

|October 12, 2012

Summary

This summary is machine-generated.

Researchers explored self-imaging in Bragg reflection waveguides (BRWs) to create a compact wavelength splitter. This device effectively separates two optical wavelengths, paving the way for dense photonic integrated circuits.

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Area of Science:

Photonics and Optical Engineering
Integrated Optics
Waveguide Theory

Background:

Self-imaging phenomena in multimode waveguides are crucial for optical device design.
Bragg reflection waveguides (BRWs) offer unique properties for light manipulation.
Efficient wavelength division is essential for dense photonic integrated circuits.

Purpose of the Study:

To investigate self-imaging phenomena in multimode BRWs.
To design and analyze a compact wavelength splitter utilizing BRW self-imaging.
To evaluate the transmission characteristics and performance of the proposed device.

Main Methods:

Plane-wave expansion method for theoretical prediction.
Finite-difference time-domain (FDTD) method for numerical simulation.
Analysis of transmission characteristics and spatial separation of optical waves.

Main Results:

Demonstrated spatial separation of two optical waves with different wavelengths.
Achieved high transmittances of 95.6% and 90.1% for the separated wavelengths.
Confirmed the effectiveness of the self-imaging principle in BRWs for wavelength splitting.

Conclusions:

A simple and compact wavelength splitter based on BRW self-imaging is presented.
The device shows promising performance for separating different wavelengths.
The proposed wavelength splitter is suitable for highly dense photonic integrated circuits.