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Updated: Jun 6, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Weighted distributed feedback structure for all-optical bistable devices.

K Nakatsuhara, T Mizumoto, R Munakata

|November 19, 2010

Summary

This summary is machine-generated.

We developed a weighted distributed feedback (W-DPB) structure for optical bistable devices. This innovation enhances on-state transmittance and lowers threshold intensity for improved optical switching performance.

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Patterning via Optical Saturable Transitions - Fabrication and Characterization

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Last Updated: Jun 6, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Patterning via Optical Saturable Transitions - Fabrication and Characterization

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

Area of Science:

Photonics
Materials Science
Optical Engineering

Background:

All-optical bistable devices are crucial for advanced optical signal processing.
Conventional distributed feedback (DPB) structures face limitations in on-state transmittance and threshold intensity.

Purpose of the Study:

To introduce and analyze a novel weighted distributed feedback (W-DPB) structure.
To improve the performance of all-optical bistable devices by enhancing transmittance and reducing threshold intensity.

Main Methods:

Numerical calculations were performed to compare W-DPB with conventional DPB structures.
Fabrication of the W-DPB structure was achieved using holographic exposure and reactive ion etching.
The W-DPB structure was realized on a CdS(x)Se(1-x)-doped glass substrate with a periodicity of 169.8 nm.

Main Results:

The W-DPB structure demonstrated significantly higher on-state transmittance compared to conventional DPB.
The W-DPB optical bistable device exhibited a lower threshold input intensity.
Successful fabrication of the W-DPB structure was experimentally verified.

Conclusions:

The W-DPB structure offers superior performance for all-optical bistable devices.
This advancement paves the way for more efficient and lower-power optical switching applications.