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High-quality-factor filter based on a photonic crystal ring resonator for wavelength division multiplexing
Yaw-Dong Wu1, Tien-Tsorng Shih, Jian-Jang Lee
1Electronic Engineering Department, National Kaohsiung University of Applied Sciences, Kaohsiung, 807, Taiwan. ydwu@cc.kuas.edu.tw
Applied Optics
|September 3, 2009
Summary
This study presents a novel photonic crystal ring resonator (PCRR) acting as a four-channel wavelength division multiplexer. The design achieves high transmission efficiency and quality factor with minimal crosstalk.
Area of Science:
- Photonics
- Optical Engineering
- Materials Science
Background:
- Ring resonators are fundamental optical components.
- Photonic crystals offer unique light manipulation properties.
- Wavelength division multiplexing (WDM) is crucial for optical communication.
Purpose of the Study:
- To design and analyze a novel photonic crystal ring resonator (PCRR) for WDM applications.
- To investigate the performance of a PCRR with an output waveguide perpendicular to the resonator.
- To demonstrate a compact and efficient WDM device using a 2D photonic crystal.
Main Methods:
- Numerical simulation of a 2D photonic crystal ring resonator.
- Design incorporates four scatters and 3x3 inner dielectric rods.
- Analysis of transmission efficiency, quality factor, and crosstalk.
Main Results:
- The proposed PCRR functions as a four-channel wavelength division multiplexer.
- Achieved transmission efficiency exceeding 92%.
- Obtained a quality factor greater than 3800.
- Demonstrated crosstalk below -32 dB.
Conclusions:
- The novel PCRR design enables efficient WDM.
- The perpendicular output waveguide offers a unique structural advantage.
- This device shows promise for compact optical communication systems.
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