Journal ArticleDOI
Theoretical and Experimental Studies on Bistability in Semiconductor Ring Lasers With Two Optical Injections
TLDR
In this paper, a semiconductor ring laser with two external optical injections is studied theoretically, numerically, and experimentally, and the interaction between the two injections demonstrates potentials for application in all-optical digital signal processing.Abstract:
Bistability in a semiconductor ring laser with two external optical injections is studied theoretically, numerically, and experimentally Two optical injections are added to the two counterpropagating modes in the laser respectively We first predicted theoretically that, with one of them acting as a static holding beam, the intensities of both modes will form a hysteresis loop as a function of the intensity of the second injection due to nonlinear mode competition The bistability and the hysteresis characteristics such as its width depend heavily on the intensity of the holding beam Average switching power will increase as the intensity of the holding beam is increased, accompanied by shrinking width of the hysteresis loop Numerical simulations and experiment are then carried out to verify the theoretical prediction, and the hysteresis loops at different holding beam strength are plotted The numerical results together with the qualitative experimental results demonstrate what has been predicted by the theoretical analysis, and a good agreement is obtained The interaction between the two injections demonstrates potentials for application in all-optical digital signal processingread more
Citations
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Journal ArticleDOI
Optical RAM and integrated optical memories: a survey
TL;DR: State-of-the-art integrated optical memory technologies and optical RAM cell demonstrations describing the physical mechanisms of several key devices along with their performance metrics in terms of their energy, speed and footprint are reviewed.
Journal ArticleDOI
Memory Speed Analysis of Optical RAM and Optical Flip-Flop Circuits Based on Coupled SOA-MZI Gates
TL;DR: In this article, the authors demonstrate analytical frequency-domain transfer function expressions for an optical random access memory (RAM) cell that employs two SOAbased ON/OFF switches and two coupled SOA-MZI gates forming an optical flip-flop.
Journal ArticleDOI
Optical injection in semiconductor ring lasers
TL;DR: In this article, the authors theoretically investigate optical injection in semiconductor ring lasers and disclose several dynamical regimes, including a frequency-locked limit cycle and an antiphase chaotic regime without the involvement of any carrier dynamics.
Journal ArticleDOI
Semiconductor ring laser subject to delayed optical feedback: Bifurcations and stability
TL;DR: In this paper, the authors considered the feedback strengths and phases to be either symmetric or asymmetric feedback and obtained complex dynamical regimes in both symmetric and asymmetric cases by linear stability of the stationary solutions calculated using DDE-BIFTOOL.
References
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Journal ArticleDOI
Theory of an Optical Maser
TL;DR: In this paper, a theoretical model for the behavior of an optical maser is presented in which the electromagnetic field is treated classically, and the active medium is made up of thermally moving atoms which acquire nonlinear electric dipole moments under the action of the field according to the laws of quantum mechanics.
Journal ArticleDOI
Injection locking properties of a semiconductor laser
TL;DR: In this article, the injected carrier density dependent refractive index in the active region of a semiconductor laser has been analyzed, and it has been found that this dependence significantly affects the injection locking properties, giving rise to a peculiar asymmetric tuning curve and dynamic instability.
Journal ArticleDOI
A fast low-power optical memory based on coupled micro-ring lasers.
MT Martin Hill,H.J.S. Dorren,Tjibbe de Vries,Xaveer Leijtens,Jan Hendrik den Besten,Barry Smalbrugge,YS Yok-Siang Oei,Hans Binsma,GD Giok-Djan Khoe,MK Meint Smit +9 more
TL;DR: Simulations show that the ring lasers with extremely small size and low operating power presented here have the potential for much smaller dimensions and switching times, and large numbers of such memory elements can be densely integrated and interconnected on a photonic integrated circuit.
Journal ArticleDOI
Nonlinear Optics for High-Speed Digital Information Processing.
D. Cotter,Robert J. Manning,Keith J. Blow,Andrew D. Ellis,Anthony Kelly,Derek Nesset,Ian Phillips,Alistair James Poustie,D. Rogers +8 more
TL;DR: Recent advances in developing nonlinear optical techniques for processing serial digital information at high speed are reviewed and expected to become important in future high-capacity communications networks.
Journal ArticleDOI
Operating regimes of GaAs-AlGaAs semiconductor ring lasers: experiment and model
TL;DR: In this article, a model based on a mean field approach for the two counter-propagating modes is proposed to study the semiconductor ring laser dynamics, and the authors obtain good numerical agreement between experiment and theory, and also an estimation for the otherwise unknown scattering parameters.