Journal ArticleDOI
Generation of flat-spectrum wideband chaos by fiber ring resonator
Reads0
Chats0
TLDR
In this article, a simple method to generate spectrally uniform wideband chaos by injecting chaotic laser into a fiber ring resonator is presented, which is a single-coupler ring equipped with an optical filter and amplifier, which adjust the optical field circulating in the ring.Abstract:
We present a simple method to generate spectrally uniform wideband chaos by injecting chaotic laser into a fiber ring resonator. The resonator is a single-coupler ring equipped with an optical filter and amplifier, which adjust the optical field circulating in the ring. The incoherent interference of the circulating fields produces wideband chaos with uniform power spectrum density distribution. We experimentally achieved a chaotic spectrum that extends over 26.5 GHz (limited by measurement bandwidth) and fluctuates within ±1.5 dB. In addition, tuning the filter frequency can control the spectral profile so as to meet different application needs.read more
Citations
More filters
Journal ArticleDOI
Wideband Chaos With Time-Delay Concealment in Vertical-Cavity Surface-Emitting Lasers With Optical Feedback and Injection
TL;DR: In this paper, the authors investigated the time-delay signature and the bandwidth of chaos in four schemes of chaos generation in vertical-cavity surface-emitting lasers (VCSELs).
Journal ArticleDOI
Minimal-post-processing 320-Gbps true random bit generation using physical white chaos.
TL;DR: A physical broadband white chaos generated by optical heterodyning of two ECLs as entropy source to construct high-speed random bit generation (RBG) with minimal post processing is proposed.
Journal ArticleDOI
Optical Heterodyne Generation of High-Dimensional and Broadband White Chaos
TL;DR: In this article, a white chaos with a colorless spectral bandwidth of 14 GHz contained within a range of 3dB is experimentally generated by optical heterodyning of two external-cavity laser diodes.
Journal ArticleDOI
Chaos synchronization and communication in closed-loop semiconductor lasers subject to common chaotic phase-modulated feedback
TL;DR: The numerical results demonstrate that wideband chaotic carrier with effective TDS suppression can be easily obtained, high-quality chaos synchronization with considerable mismatch robustness, frequency detuning tolerance, and phase fluctuation tolerance can be achieved in a wide operation range, and high-speed chaos communication is available.
Journal ArticleDOI
Simultaneous and precise fault locating in WDM-PON by the generation of optical wideband chaos
TL;DR: A simple approach to generating optical wideband chaos is demonstrated and it is verified that it can be used to locate simultaneously and precisely the faults among all branches in a wavelength-division-multiplexing (WDM) passive optical network (PON).
References
More filters
Journal ArticleDOI
A practical method for calculating largest Lyapunov exponents from small data sets
TL;DR: A new method for calculating the largest Lyapunov exponent from an experimental time series is presented that is fast, easy to implement, and robust to changes in the following quantities: embedding dimension, size of data set, reconstruction delay, and noise level.
Journal ArticleDOI
External optical feedback effects on semiconductor injection laser properties
R. Lang,Kohroh Kobayashi +1 more
TL;DR: In this paper, the effects of external optical feedback on the semiconductor laser properties have been examined, i.e., return of a portion of the laser output from a reflector external to the laser cavity.
Journal ArticleDOI
Chaos-based communications at high bit rates using commercial fibre-optic links
Apostolos Argyris,Dimitris Syvridis,Laurent Larger,Valerio Annovazzi-Lodi,Pere Colet,Ingo Fischer,Ingo Fischer,Jordi Garcia-Ojalvo,Claudio R. Mirasso,Luis Pesquera,K. Alan Shore +10 more
TL;DR: High-speed long-distance communication based on chaos synchronization over a commercial fibre-optic channel is demonstrated, showing that information can be transmitted at high bit rates using deterministic chaos in a manner that is robust to perturbations and channel disturbances unavoidable under real-world conditions.
Journal ArticleDOI
A tutorial on microwave photonic filters
TL;DR: This paper provides a tutorial introduction of this subject to the reader not working directly in the field but interested in getting an overall introduction of the subject and also to the researcher wishing to get a comprehensive background before working on the subject.
Journal ArticleDOI
Fast physical random bit generation with chaotic semiconductor lasers
Atsushi Uchida,Atsushi Uchida,Kazuya Amano,Masaki Inoue,Kunihito Hirano,Sunao Naito,Hiroyuki Someya,Isao Oowada,Takayuki Kurashige,Masaru Shiki,Shigeru Yoshimori,Kazuyuki Yoshimura,Peter Davis +12 more
TL;DR: It is shown that good quality random bit sequences can be generated at very fast bit rates using physical chaos in semiconductor lasers, which means that the performance of random number generators can be greatly improved by using chaotic laser devices as physical entropy sources.