Sapphire Photonic Crystal Waveguides with Integrated Bragg Grating Structure

Sapphire Photonic Crystal Waveguides with Integrated Bragg Grating Structure

This contribution demonstrates photonic crystal waveguides generated within bulk planar sapphire substrates. A femtosecond laser is used to modify the refractive index in a hexagonal pattern around the pristine waveguide core. Near-field measurements reveal single-mode behavior at a wavelength of 15...

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Bibliographic Details
Main Authors: Stefan Kefer, Gian-Luca Roth, Julian Zettl, Bernhard Schmauss, Ralf Hellmann
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Photonics
Subjects:
integrated photonics
sapphire
Bragg grating
femtosecond laser
photonic crystal waveguide
depressed cladding
Online Access:https://www.mdpi.com/2304-6732/9/4/234

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https://www.mdpi.com/2304-6732/9/4/234

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