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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Phase-change devices for simultaneous optical-electrical applications.

Yat-Yin Au¹, Harish Bhaskaran², C David Wright³

¹Department of Engineering, University of Exeter, Exeter, EX4 4QF, UK.

Scientific Reports

|August 31, 2017

Summary

This summary is machine-generated.

Researchers developed a new method to design and test optoelectronic phase-change devices for applications like displays and switches. A microheater approach proved effective for large-area device fabrication, enabling thermally-induced state cycling.

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Area of Science:

Optoelectronics
Materials Science
Device Physics

Background:

Phase-change devices offer potential for novel applications including displays and switches.
Optoelectronic operation requires simultaneous optical and electrical control and measurement.
Existing characterization methods may not fully capture mixed-mode device behavior.

Purpose of the Study:

To establish a viable pathway for designing and characterizing optoelectronic phase-change devices.
To develop a specialized probe station for simultaneous optical-electrical measurements.
To design, fabricate, and test prototype mixed-mode phase-change structures.

Main Methods:

Designed and constructed a custom optoelectronics probe station for simultaneous optical-electrical excitation and response measurement.
Fabricated two prototype phase-change device structures: a mixed-mode cross-bar and a microheater-based device.
Characterized the fabricated devices to assess their optoelectronic properties and switching behavior.

Main Results:

The purpose-built probe station successfully enabled simultaneous optical-electrical characterization.
Both prototype devices were fabricated and tested, demonstrating potential for mixed-mode operation.
The microheater-based device achieved successful thermally-induced cycling between amorphous and crystalline states for large-area devices.

Conclusions:

A practical pathway for optoelectronic phase-change device design and characterization has been demonstrated.
The microheater approach is promising for fabricating large-area phase-change pixels for display applications.
Further development of these devices could lead to advancements in reconfigurable metamaterials and optically-gated switches.