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Low Loss Nanostructured Polymers for Chip-scale Waveguide Amplifiers.

George F R Chen¹, Xinyu Zhao¹, Yang Sun²

¹Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.

Scientific Reports

|June 15, 2017

Summary

This summary is machine-generated.

Researchers developed a novel on-chip waveguide amplifier using specialized nanocrystals in a polymer. This device achieves high optical gain, promising for integrated photonic circuits and flexible communication devices.

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Area of Science:

Materials Science
Photonics
Nanotechnology

Background:

On-chip waveguide amplifiers offer advantages over fiber amplifiers but face material limitations.
Developing efficient and integrable on-chip amplification is crucial for advanced optical circuits.

Purpose of the Study:

To design, fabricate, and characterize a low-loss, nanostructured on-chip channel polymeric waveguide amplifier.
To achieve high optical gain at telecommunication wavelengths for integrated photonic applications.

Main Methods:

Fabrication of a polymeric waveguide core using NaYF4:Yb,Er,Ce core-shell nanocrystals dispersed in SU8 polymer.
Tailoring nanoparticle interfaces with hydrolyzed polyhedral oligomeric silsesquioxane-graft-poly(methyl methacrylate) for improved dispersion.
Experimental measurement of optical gain at telecommunication wavelengths.

Main Results:

Achieved a high optical gain of 6.6 dB/cm with low coupled pump power (80 mW).
Demonstrated excellent optical performance attributed to enhanced nanocrystal emission and reduced scattering losses.
High solid loading (6.0 vol%) of nanocrystals achieved with good dispersion.

Conclusions:

The developed polymeric waveguide amplifier shows significant promise for integrated optical circuits.
Processability and integration advantages make it suitable for flexible communication and optoelectronic devices.
This work addresses key material challenges for mainstream on-chip amplification.