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Published on: September 26, 2014
Boxlike filter response based on complementary photonic bandgaps in two-dimensional microresonator arrays
Landobasa Yosef Mario Tobing1, Pieter Dumon, Roel Baets
1Nanyang Technological University, Singapore.
Optics Letters
|November 4, 2008
Summary
Researchers developed novel photonic bandgap filters using microresonator arrays. These filters achieve a boxlike response with reduced sidelobes and wide usable bandwidth, advancing optical filtering technologies.
Area of Science:
- Photonics
- Optical Engineering
- Materials Science
Background:
- Microresonator arrays are crucial for integrated photonic devices.
- Achieving specific filter responses like a boxlike shape is challenging.
- Photonic bandgap properties offer potential for precise optical control.
Purpose of the Study:
- To propose and demonstrate a novel method for achieving a boxlike filter response.
- To utilize complementary photonic bandgap properties in microresonator arrays.
- To enhance the performance of optical filters in terms of sidelobe reduction and bandwidth.
Main Methods:
- Fabrication of two-dimensional microresonator arrays using deep-UV lithography.
- Leveraging complementary photonic bandgap properties of column and row configurations.
- Characterization of filter response, including sidelobe levels and usable bandwidth.
Main Results:
- Successfully obtained a boxlike filter response.
- Achieved approximately 10 dB of sidelobe reduction.
- Demonstrated a usable bandwidth ranging from 500-750 GHz.
Conclusions:
- The proposed method effectively achieves a boxlike filter response using microresonator arrays.
- Complementary photonic bandgap properties are key to enhanced filter performance.
- The developed filters offer significant improvements for optical communication and signal processing.
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