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Thin-film lithium niobate polarization modulator without polarization diversity
Optics Express
|October 15, 2022
Summary
We developed a novel polarization modulator on thin-film lithium niobate (TFLN) for optical information processing. This compact device simplifies polarization control in telecommunications.
Area of Science:
- Photonics
- Integrated Circuits
- Materials Science
Background:
- Advancements in photonic integrated circuits and optical information processing necessitate efficient polarization control.
- Thin-film lithium niobate (TFLN) is a key platform for developing advanced optical devices.
Purpose of the Study:
- To demonstrate a polarization modulator on the TFLN platform.
- To achieve polarization modulation without requiring polarization diversity.
Main Methods:
- Fabrication of a polarization modulator comprising a phase modulator and a 2D grating coupler on TFLN.
- Design focused on a compact footprint and high fabrication tolerance.
Main Results:
- Successful demonstration of a polarization modulator on TFLN.
- The device operates without polarization manipulation elements, simplifying its structure.
- Achieved a small footprint and high fabrication tolerance.
Conclusions:
- The developed TFLN polarization modulator offers a simplified and robust solution.
- This device is promising for polarization encoding in telecommunication systems.
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