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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Highly dispersive slot waveguides.

Lin Zhang¹, Yang Yue, Yinying Xiao-Li

¹Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. linzhang@usc.edu

|April 29, 2009

Summary

This summary is machine-generated.

We developed a high-dispersion slot-waveguide by coupling slot and strip waveguides. This design achieves significant negative dispersion, beneficial for optical signal processing and dispersion compensation.

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Area of Science:

Photonics
Optical Engineering
Materials Science

Background:

Optical waveguides are crucial components in integrated photonics.
Achieving high and tunable optical dispersion is essential for advanced signal processing.
Existing waveguide designs often struggle with achieving large, stable dispersion characteristics.

Purpose of the Study:

To propose and analyze a novel slot-waveguide structure for high optical dispersion.
To investigate the strong interaction between slot and strip waveguide modes.
To demonstrate the potential for dispersion compensation and signal processing applications.

Main Methods:

Coupling a slot waveguide with a strip waveguide.
Utilizing the strong interaction between slot and strip modes to engineer dispersion.
Cascading slot-waveguides with varied dimensions for dispersion control.

Main Results:

Achieved a negative dispersion of up to -181520 ps/nm/km.
Demonstrated a flat and large dispersion of -31300 ps/nm/km over a 147-nm bandwidth.
Maintained less than 1% variance in dispersion across the specified bandwidth.

Conclusions:

The proposed coupled slot-waveguide offers a promising platform for ultra-high dispersion.
The design enables effective dispersion compensation and advanced optical signal processing.
Tunable dispersion characteristics make it suitable for a wide range of photonic applications.