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Low-power total internal reflection thermo-optic switch based on hybrid SiON-polymer X-junction waveguides
Applied Optics
|November 22, 2018
Summary
This study presents a novel low-power thermo-optic switch using silicon oxynitride and polymer. The unique X-junction design enhances heat utilization for efficient optical signal routing.
Area of Science:
- Photonics
- Materials Science
- Optical Engineering
Background:
- Thermo-optic switches are crucial for optical communication networks.
- Existing X-junction designs face limitations in heat utilization efficiency.
Purpose of the Study:
- To propose and demonstrate a low-power 2x2 total internal reflection thermo-optic switch.
- To enhance heat utilization efficiency through a novel X-junction configuration.
Main Methods:
- Fabrication of a thermo-optic switch with a silicon oxynitride (SiON) core and polymer cladding.
- Implementation of a slot in the X-junction center filled with polymer cladding.
- Utilizing the opposite thermo-optic characteristics of SiON and polymer.
Main Results:
- Achieved extinction ratios exceeding 15.34 dB.
- Demonstrated low switching powers below ~59.6 mW.
- Reported insertion losses under 10.6 dB and polarization-dependent loss of ~0.3 dB.
Conclusions:
- The proposed X-junction configuration effectively utilizes the thermo-optic properties of SiON and polymer.
- The fabricated switch offers excellent performance metrics for low-power optical switching applications.
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