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Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics
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High-extinction electro-optic modulation on lithium niobate thin film
Optics Letters
|March 2, 2019
Summary
Researchers improved electro-optic modulation extinction ratios using cascaded Mach-Zehnder interferometry on lithium-niobate-on-insulator. This scalable nanophotonics technique achieves over 53 dB extinction across a broad wavelength range.
Area of Science:
- Photonics
- Materials Science
- Electrical Engineering
Background:
- Integrated nanophotonics with lithium-niobate-on-insulator offers scalable solutions.
- Electro-optic modulation is crucial but limited by fabrication errors, resulting in low extinction ratios (<30 dB).
Purpose of the Study:
- To overcome fabrication limitations in electro-optic modulators.
- To enhance modulation extinction ratios for scalable nanophotonics.
Main Methods:
- Utilizing a cascaded Mach-Zehnder interferometry design.
- Fabricating devices on a lithium-niobate-on-insulator platform.
Main Results:
- Achieved a modulation extinction ratio of up to 53 dB.
- Demonstrated broadband performance across the 1500-1600 nm wavelength range.
- Showcased chip integration, high extinction, and good stability.
Conclusions:
- The cascaded Mach-Zehnder interferometry design effectively compensates for fabrication errors.
- This advanced nanophotonics technique is valuable for various photonic applications requiring high extinction and broadband operation.
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