Different Approaches of Synchronization in Chaotic-Coupled QD Lasers

Husseini, Hussein B. Al; Naimee, K. Al

doi:10.5772/intechopen.72500

Cited by 2 publications

(2 citation statements)

References 13 publications

(25 reference statements)

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“…The carrier-light interaction in our approach is summarized in (S), which contains longitudinal modes. Our model, which is used in this study, is a modified version of the Al-Husseini model for optical feedback in QD lasers [17], in which the PCM provides feedback through the external cavity to a single-mode QD semiconductor laser. t and k are crucial factors in any optical feedback system.…”

Section: Qd Laser Model With Dfofmentioning

confidence: 99%

Quantum dot laser dynamics and external filtered modes under the influence of double-filtered optical feedback

Mahdi,

Al Husseini

2024

Phys. Scr.

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We investigate the solution structure and dynamics of the double filtered optical feedback (DFOF) laser, a semiconductor quantum dot (QD) laser system that receives delayed FOF from two filter loops. Two filters are utilized in optical communication applications to regulate and stabilize the laser output, which served as the inspiration for this study. Delay differential equations for the inversion of the QD laser with the two filters make up the DFOF laser's overall mathematical model. Since consistent operation of the laser source is crucial for optical communication applications, our analysis concentrates on continuous-wave DFOF QD laser systems. These fundamental answers, referred to as external filtered modes (EFMs), which has a considerable impact on the structure and stability of the EFMs and, consequently, the laser's performance as compared to the single FOF QD laser. The parameter Ceff is a measure of the interference between the two filter fields, and it is identified as a key to the EFM structure. To analyse how the structure and stability of the EFMs depend on all the filter and feedback loop parameters, we make extensive use of the EFM surface in (Ω(ωs), Ceff, Ys)-space of frequency s, filter phase difference Ceff, and population inversion Ys of the QD laser. In general, the EFM surface is the natural object that should be taken into account to comprehend the dynamical characteristics of the DFOF laser. Overall, our study in a QD laser output with constant amplitude and frequency. The time delay suppression is dependent on the spectral width Ʌ of the filter and how far it is from the solitary laser frequency, according to numerical calculations.

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Section: Qd Laser Model With Dfofmentioning

confidence: 99%

Quantum dot laser dynamics and external filtered modes under the influence of double-filtered optical feedback

Mahdi,

Al Husseini

2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…The carrier-light interaction in our approach is summarized in (S), which contains longitudinal modes. Our model, which is used in this study, is a modified version of the Al-Husseini model for optical feedback in QD lasers [17], in which the PCM provides feedback through the external cavity to a single-mode QD semiconductor laser. 𝜏 and 𝑘 are crucial factors in any optical feedback system.…”

Section: Quantum Dot Laser Model With Dfofmentioning

confidence: 99%

External Filtered Modes of a Quantum Dot Laser Under the Influence of Double-Filtered Optical Feedback

Mahdi,

Husseini

2023

ijmst

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When semiconductor lasers SLs are exposed to filtered optical feedback (FOB), they behave in two different ways. Under weak or strong feedback, the first is a singularly stable longitudinal mode with a small linewidth. The second is the so-called coherence breakdown condition, which also includes low frequency fluctuations (LFF) and chaotic oscillations. The latter has received a lot of attention recently due to the possible uses of chaotic lasers in chaotic lidar, covert communications, and chaotic correlation time-domain optical reflectometers, while the former has received a lot of research in recent years. We investigate the behavior of a quantum dot (QD) semiconductor laser subject to FOF from two separate external cavities both, numerically and experimentally. Our findings show that the second FOF allows for rich adjustment of the laser frequency. Our analysis of double-filtered optical feedback (DFOF) lasers is on fundamental solutions, sometimes referred to as continuous waves (CW) or external filtering modes (EFM), which result in a QD laser output with constant amplitude and frequency. The time delay suppression is dependent on the spectral width of the filter and how far it is from the solitary laser frequency, according to numerical calculations.

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Different Approaches of Synchronization in Chaotic-Coupled QD Lasers

Cited by 2 publications

References 13 publications

Quantum dot laser dynamics and external filtered modes under the influence of double-filtered optical feedback

Quantum dot laser dynamics and external filtered modes under the influence of double-filtered optical feedback

External Filtered Modes of a Quantum Dot Laser Under the Influence of Double-Filtered Optical Feedback

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