Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: Jun 3, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Chaos laser chips with delayed optical feedback using a passive ring waveguide.

Satoshi Sunada¹, Takahisa Harayama, Kenichi Arai

¹NTT Communication Science Laboratories, NTT Corporation, Soraku-gun, Kyoto, Japan. sunada@cslab.kecl.ntt.co.jp

|April 1, 2011

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same authorSame journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026

Same author

Embedding Multiperspective Reflections in Co-Producing a Training Intervention for Care Home Staff: Understanding Group Members' Journeys and Impacts.

Health expectations : an international journal of public participation in health care and health policy·2026

Same author

Budesonide and Surfactant Therapy Versus Surfactant Alone on Incidence of Lung Disease in Preterm Infants (BEST Lung): Study Protocol for a Systematic Review and Individual Participant Data Meta-Analysis With Nested Prospective Meta-Analysis.

Acta paediatrica (Oslo, Norway : 1992)·2026

Same author

Closing the Gap to Interventions for Tuberous Sclerosis Complex-Associated Neuropsychiatric Disorders (TAND): Protocol for a Longitudinal Study of TAND Severity, Predictors, and Caregiver Well-Being (TANDem-2).

JMIR research protocols·2026

Same author

Photonic decision making using optical frequency difference detection in mutually-coupled semiconductor lasers.

Optics express·2026

Same author

Initial Resuscitation of Preterm Infants With Targeted Oxygen-Reply.

JAMA·2026

Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026

Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026

Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026

Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026

Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026

See all related articles

This study introduces a new chaos semiconductor laser chip with a ring structure for stronger optical feedback. This design enables the generation of broadband chaos with a flat spectrum, validated by randomness tests.

Area of Science:

Photonics and Laser Technology
Semiconductor Devices
Nonlinear Dynamics

Background:

Chaos semiconductor lasers are crucial for secure communications and random number generation.
Previous designs often relied on linear waveguides and facet reflections, limiting feedback strength and spectral properties.

Purpose of the Study:

To report a novel monolithically integrated chaos semiconductor laser chip.
To achieve stronger delayed optical feedback and generate broadband chaos with a flat spectrum.
To demonstrate the stability and quality of the generated chaotic optical signals.

Main Methods:

Monolithic integration of a distributed feedback (DFB) laser, two semiconductor optical amplifiers (SOAs), and a photodiode (PD) on a passive ring waveguide.
Utilizing a ring-type structure with two separate SOAs to enhance delayed optical feedback.

More Related Videos

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

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

Related Experiment Videos

Last Updated: Jun 3, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

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

Employing injection currents to the SOAs to control dynamical behaviors and optical signal generation.

Applying strict statistical tests of randomness to sampled optical intensity signals.

Main Results:

The ring-type structure achieved stronger delayed optical feedback compared to previous designs.
A rich variety of dynamical behaviors and optical signals were selectively generated.
Strong broadband optical chaos with a very flat spectrum (±6.5 dB up to 10 GHz) was generated.
The stability and quality of the chaotic mode were statistically validated.

Conclusions:

The novel integrated chaos semiconductor laser chip offers enhanced performance for generating broadband chaos.
The ring-type structure and integrated components facilitate superior optical feedback and signal detection.
The demonstrated chaotic signals possess high quality and stability, suitable for advanced applications.