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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
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Femtosecond laser written arrayed waveguide gratings with integrated photonic lanterns
Optics Express
|February 7, 2018
Summary
Femtosecond laser direct-write fabrication enables functional arrayed waveguide gratings (AWGs). This maskless technique offers design flexibility and integrates photonic lanterns for enhanced sensing applications.
Area of Science:
- Photonics and Optical Engineering
- Materials Science and Engineering
Background:
- Arrayed waveguide gratings (AWGs) are key components in optical signal processing.
- Traditional lithography-based fabrication limits design flexibility and integration capabilities.
Purpose of the Study:
- To demonstrate functional AWGs fabricated using the femtosecond laser direct-write technique.
- To showcase the advantages of 3D fabrication for integrated photonic devices.
Main Methods:
- Femtosecond laser direct-write (FLDW) fabrication for maskless, 3D patterning of optical waveguides.
- Integration of a 3-port photonic lantern with an AWG on a single monolithic chip.
Main Results:
- Demonstration of functional AWGs operating in the visible spectrum (632.8 nm).
- Achieved a free spectral range (FSR) of 22.2 nm and a resolution of 1.35 nm.
- Successful monolithic integration of an AWG with a photonic lantern, a feat not possible with lithography.
Conclusions:
- FLDW is a viable maskless alternative to lithography for AWG fabrication, offering design flexibility and rapid prototyping.
- The monolithic integration of AWGs with photonic lanterns enhances functionality, particularly for sensing applications.
- This 3D fabrication approach opens new avenues for customized, small-scale photonic device production.
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