Results 41 to 50 of about 449,684 (296)

Numerical Demonstration of the Transmission of Low Frequency Fluctuation Dynamics Generated by a Semiconductor Laser with Optical Feedback

open access: yesPhotonics, 2022
In this paper, the transmission mechanism of the spike information embedded in the low frequency fluctuation (LFF) dynamic in a cascaded laser system is numerically demonstrated.
Xinyu Dou, Shimeng Qiu, Wanqing Wu
doaj   +1 more source

Feedback control in quantum optics: an overview of experimental breakthroughs and areas of application

open access: yes, 2012
We present a broad summary of research involving the application of quantum feedback control techniques to optical set-ups, from the early enhancement of optical amplitude squeezing to the recent stabilisation of photon number states in a microwave ...
Serafini, Alessio
core   +1 more source

Optical-Mechanical Configuration of Imaging Operation for Endoscopic Scanner: A Review

open access: yesIEEE Access, 2021
Miniaturized endoscopic scanners have had a significant impact on high-resolution optical imaging. Technological advancements in micro-electromechanical systems and optical fiber technology have resulted in various optical-mechanical configurations ...
Yang Sing Leong   +5 more
doaj   +1 more source

Nonlinear Dynamics of Two-State Quantum Dot Lasers under Optical Feedback

open access: yesPhotonics, 2021
A modified rate equation model was presented to theoretically investigate the nonlinear dynamics of solitary two-state quantum dot lasers (TSQDLs) under optical feedback. The simulated results showed that, for a TSQDL biased at a relatively high current,
Xiang-Hui Wang   +3 more
doaj   +1 more source

Variable frequency picosecond optical pulse generation from laser diodes by electrical feedback [PDF]

open access: yes, 1985
High repetition rate picosecond optical pulse generation is achieved by providing electrical feedback (with and without external gain) to a self-pulsating laser diode. The feedback improves pulsation short-term stability (
Izadpanah, S. H.   +4 more
core   +1 more source

The Dynamics of Semiconductor Laser under Optical Feedback

open access: yesمجلة علوم ذي قار, 2019
The dynamical behavior of semiconductor laser in the present of optical feedback is studied by varying number of control parameters that appeared in the adopted theoretical model viz, linewidth enhancement factor , pump level , delay time and feedback ...
Abadhar R. Ahmed
doaj   +2 more sources

Experimental and Numerical Study of Locking of Low-Frequency Fluctuations of a Semiconductor Laser with Optical Feedback

open access: yesPhotonics, 2022
We study the output of a semiconductor laser with optical feedback operated in the low-frequency fluctuations (LFFs) regime and subject to weak sinusoidal current modulation.
Jordi Tiana-Alsina, Cristina Masoller
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Accelerating photonic computing by bandwidth enhancement of a time-delay reservoir

open access: yesNanophotonics, 2020
Semiconductor lasers (SLs) that are subject to delayed optical feedback and external optical injection have been demonstrated to perform information processing using the photonic reservoir computing paradigm.
Estébanez Irene   +3 more
doaj   +1 more source

Mutual optical injection in coupled DBR laser pairs [PDF]

open access: yes, 2009
We report an experimental study of nonlinear effects, characteristic of mutual optical coupling, in an ultra-short coupling regime observed in a distributed Bragg reflector laser pair fabricated on the same chip.
Avila   +34 more
core   +1 more source

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