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Silicon-nitride microring resonators for nonlinear optical and biosensing applications
Applied Optics
|October 6, 2021
Summary
Silicon-nitride microring resonators were developed for nonlinear photonics and biosensing. Techniques were introduced to overcome dispersion issues and enable sensitive detection of neuropeptide Y, a stress biomarker.
Area of Science:
- Photonics and Materials Science
- Integrated Optics
- Nanotechnology
Background:
- Silicon-nitride microring resonators are crucial for integrated photonic devices.
- Overcoming normal dispersion is essential for enhancing nonlinear effects and device performance.
- Developing sensitive biosensors for disease biomarkers is a significant challenge.
Purpose of the Study:
- To design, fabricate, and characterize silicon-nitride microring resonators.
- To address and overcome the challenge of high normal dispersion in these resonators.
- To explore applications in nonlinear photonics and highly sensitive biosensing.
Main Methods:
- Theoretical and experimental investigation of silicon-nitride microresonators.
- Integration of a dispersive coupler to manage optical dispersion.
- Fabrication of hybrid slot waveguides with nonlinear polymer cladding.
- Utilizing microring resonators for neuropeptide Y detection.
Main Results:
- Successful overcoming of highly normal dispersion in silicon-nitride microresonators.
- Demonstration of highly efficient second-order nonlinear interaction in hybrid slot waveguides.
- Achieved nanomolar-level detection of neuropeptide Y using microring resonators as biosensors.
Conclusions:
- Silicon-nitride microring resonators offer a promising platform for advanced photonic applications.
- The developed techniques enhance the performance of resonators for nonlinear optics.
- Microring resonator biosensors demonstrate potential for early-stage disease detection.
