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Low drive voltage electro-optic Bragg deflector using a periodically poled lithium niobate planar waveguide
Optics Letters
|September 16, 2016
Summary
This study demonstrates a highly efficient electro-optic Bragg light deflector using periodically poled lithium niobate. It achieves over 97% diffraction efficiency at 633 nm with a low drive voltage, showing potential for optical switching applications.
Area of Science:
- Photonics and Optoelectronics
- Materials Science
- Electrical Engineering
Background:
- Integrated photonics relies on efficient light manipulation components.
- Electro-optic devices offer fast and low-power control of light.
- Planar waveguides are key for miniaturized optical systems.
Purpose of the Study:
- To demonstrate a novel electro-optic Bragg light deflector.
- To achieve high diffraction efficiency with low drive voltage.
- To characterize the device's temporal performance.
Main Methods:
- Fabrication of a thinned, periodically poled lithium niobate planar waveguide.
- Integration of silica layers on a silicon substrate.
- Testing diffraction efficiency for orthogonal polarizations at 633 nm.
- Measurement of temporal electric drift and response time.
Main Results:
- Achieved over 97% diffraction efficiency.
- Operated with a low drive voltage of approximately 5 V.
- Evaluated temporal electric drift and response time characteristics.
Conclusions:
- The demonstrated device offers high performance for electro-optic light deflection.
- The low drive voltage and high efficiency are promising for integrated photonic applications.
- Further studies on temporal characteristics are important for practical implementation.
