Journal ArticleDOI
Controlled multiwavelength emission using semiconductor ring lasers with on-chip filtered optical feedback.
Mulham Khoder,Guy Verschaffelt,Romain Modeste Nguimdo,Xaveer Leijtens,Jeroen Bolk,Jan Danckaert +5 more
TLDR
Through experimental observations and numerical simulations, it is found that the effective gain of the different modes is the key parameter which has to be balanced in order to achieve multiwavelength emission.Abstract:
We report on an integrated approach to obtain multiwavelength emission from semiconductor ring lasers with filtered optical feedback. The filtered feedback is realized on-chip employing two arrayed-waveguide gratings to split/recombine light into different wavelength channels. Through experimental observations and numerical simulations, we find that the effective gain of the different modes is the key parameter which has to be balanced in order to achieve multiwavelength emission. This can be achieved by tuning the injection current in each amplifier.read more
Citations
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Journal ArticleDOI
Simultaneous Computation of Two Independent Tasks Using Reservoir Computing Based on a Single Photonic Nonlinear Node With Optical Feedback
TL;DR: A photonic delay-based reservoir computing system, which processes, in parallel, two independent computational tasks even when the two tasks have unrelated input streams, is numerically demonstrated.
Journal ArticleDOI
Wavelength Switching Speed in Semiconductor Ring Lasers With On-Chip Filtered Optical Feedback
Mulham Khoder,Romain Modeste Nguimdo,Xaveer Leijtens,Jeroen Bolk,Jan Danckaert,Guy Verschaffelt +5 more
TL;DR: In this paper, the authors experimentally and numerically characterize the wavelength switching speed of a tunable semiconductor ring laser using filtered optical feedback, and investigate the effect of the feedback parameters and noise strength on the wavelength switch speed.
Journal ArticleDOI
Effect of External Optical Feedback on Tunable Micro-Ring Lasers Using On-Chip Filtered Feedback
TL;DR: In this article, the influence of external optical feedback on semiconductor ring laser was investigated using on-chip filtered optical feedback, and the authors were able to numerically reproduce the experimental observations using a rate equations model.
Journal ArticleDOI
Semiconductor ring laser with filtered optical feedback: traveling wave description and experimental validation
TL;DR: In this paper, a traveling-wave model was used to determine the evolution of optical fields and carrier density along the ring cavity and filtering branches of a semiconductor ring laser with four filtering channels providing delayed optical feedback.
Journal ArticleDOI
Stability of steady and periodic states through the bifurcation bridge mechanism in semiconductor ring lasers subject to optical feedback.
TL;DR: It is demonstrated that the self-pulsating regime results from a particular Hopf bifurcation mechanism referred to as b ifurcation bridges and are fully stable, a scenario that was not possible for diode lasers under the same conditions.
References
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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
Multi-wavelength source using low drive-voltage amplitude modulators for optical communications.
TL;DR: A detailed theoretical analysis is presented, showing that using two concatenated modulators driven with voltages of 3.5 V(pi) are necessary to generate 11 comb lines with a flatness below 2dB.
Journal ArticleDOI
Alternate oscillations in semiconductor ring lasers
Marc Sorel,P.J.R. Laybourn,Alessandro Scirè,Salvador Balle,Guido Giuliani,R. Miglierina,Silvano Donati +6 more
TL;DR: A bifurcation from bidirectional stable operation to a regime with alternate oscillations of the counterpropagating modes was observed experimentally and is theoretically explained through a two-mode model.
Journal ArticleDOI
Dynamical behavior of a semiconductor laser with filtered external optical feedback
M. Yousefi,Daan Lenstra +1 more
TL;DR: In this paper, a theoretical analysis of the dynamical performance of a semiconductor laser under the influence of delayed weak filtered external optical feedback was performed on the maximum gain mode with a small amplitude limit cycle.
Journal ArticleDOI
Multiple wavelength operation of an erbium-doped fiber laser
TL;DR: In this article, an all-fiber, erbium-amplifier-based design that uses a grating wavelength division multiplexer with a fixed channel spacing of 4.8 nm for frequency selection is presented.
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External optical feedback effects on semiconductor injection laser properties
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