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Related Experiment Video

Updated: May 30, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Semiconductor device as optical demultiplexer for short range optical communications.

P Louro¹, M Vieira, M Fernandes

¹DEETC-ISEL, R. Conselheiro Emidio Navarro, P 1949-014 Lisboa, Portugal.

Journal of Nanoscience and Nanotechnology

|July 21, 2011

Summary

This study introduces a novel multilayered amorphous silicon carbide heterostructure device for wavelength-division demultiplexing (WDM) in visible light. The device successfully separates and recovers optical signals across different wavelengths, showing promise for optical communications.

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Last Updated: May 30, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Area of Science:

Optoelectronics
Materials Science
Photonics

Background:

Wavelength-division multiplexing (WDM) is crucial for increasing optical communication capacity.
Developing compact and efficient WDM devices for the visible spectrum is an ongoing challenge.

Purpose of the Study:

To present a novel multilayered a-SiC:H heterostructure for visible light WDM applications.
To characterize the optoelectronic properties and demonstrate the WDM functionality of the proposed device.

Main Methods:

Fabrication of a stacked p-i-n photodiode heterostructure with tailored absorption regions.
Optoelectronic characterization across the visible spectrum.
Demonstration of WDM functionality using three distinct wavelength channels.

Main Results:

The a-SiC:H heterostructure device exhibited successful wavelength-division demultiplexing.
Input channels were recovered by analyzing photo-current spectral dependence on applied voltage.
An electrical model was proposed and validated through circuit equation solutions.

Conclusions:

The multilayered a-SiC:H heterostructure is a viable device for visible light WDM.
The device shows potential for short-range optical communication systems.
Further applications beyond optical communications are anticipated.