Analysis of signal voltage in a semiconductor ring laser gyro

Abstract:We demonstrate unidirectional bistability in microdisk lasers electrically pumped and heterogeneously integrated on SOI. The lasers operate in continuous wave regime at room temperature and are single mode. Integrating a passive distributed Bragg reflector (DBR) on the waveguide to which the microdisk is coupled feeds laser emission back into the laser cavity. This introduces an extra unidirectional gain and results in unidirectional emission of the laser, as demonstrated in simulations as well as in experiment.

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“….e n noise E RRn π = , with RR representing the spontaneous emission amplitude and n and ' n random numbers between 0 and 1. We find [14,15]:…”

Section: Simulation Of the Unidirectional Behaviormentioning

confidence: 99%

Unidirectional III-V microdisk lasers heterogeneously integrated on SOI

et al. 2013

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“…It successfully describes SRL as gyroscopes [48] and explains the regime of alternate oscillations, stochastic mode-hopping between multiple stable attractors and excitability [40,41,49]. The rate-equation model for the slowly varying complex amplitudes of the electric fields of the counter-propagating waves E cw and E ccw and the carrier number inside the cavity N (1a) and (1b) has delayed terms in the carrier equation (1b).…”

Section: System Configuration and The Modelmentioning

confidence: 99%

“…The dynamical behavior of a solitary SRL operating in a singlelongitudinal, single-transverse mode can be adequately described by a two-mode rate equation model [48,49], containing both linear coupling and nonlinear gain suppression between the CW and CCW modes at a single cavity frequency. It successfully describes SRL as gyroscopes [48] and explains the regime of alternate oscillations, stochastic mode-hopping between multiple stable attractors and excitability [40,41,49].…”

Section: System Configuration and The Modelmentioning

confidence: 99%

Theoretical analysis of semiconductor ring lasers with short and long time-delayed optoelectronic and incoherent feedback

Kingni

Sande

Ermakov

et al. 2015

Optics Communications

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“…Such a model has been successfully applied to describe SRLs as gyroscopes [32] and explained the regime of alternate oscillations, stochastic mode-hopping between multiple stable attractors and excitability as experimentally observed in SRLs The rate-equations for the slowly varying complex amplitudes of the electric fields of the counter propagating waves cw E and ccw E and the carrier number inside of the cavity N read:…”

Section: Setup and Modelmentioning

confidence: 99%

Nonlinear dynamics in semiconductor ring lasers with negative optoelectronic and incoherent optical feedback

et al. 2014

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In this work, we study theoretically the dynamical behavior of two semiconductor ring lasers (SRLs). One is subject to negative optoelectronic feedback and the other laser is subject to incoherent optical feedback. Relying on asymptotic methods, we are able to reduce the original set of five equations used to describe the dynamical behavior of SRLs with negative optoelectronic feedback (SRL-NOEF) or incoherent optical feedback (SRL-IOF) to two equations and one map with time delay valid on time-scales longer than the relaxation oscillations (ROs). The equations of the reduced models turn out to be the same for both systems. As we vary the feedback strength, the devices under consideration in this work display both continuous wave operation and a period-doubling route to chaos. The two counter-propagating intensities of both systems exhibit in-phase chaotic behavior for small delay times comparable to the period of relaxation oscillations. For delay times significantly longer than the period of ROs, the two counter-propagating modes show in anti-phase chaotic oscillations. Moreover, for long delay times, we find that the counter-propagating intensities of both systems depict the same dynamical behaviors when their feedback strengths are increased.

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Analysis of signal voltage in a semiconductor ring laser gyro

Cited by 23 publications

References 7 publications

Unidirectional III-V microdisk lasers heterogeneously integrated on SOI

Unidirectional III-V microdisk lasers heterogeneously integrated on SOI

Theoretical analysis of semiconductor ring lasers with short and long time-delayed optoelectronic and incoherent feedback

Nonlinear dynamics in semiconductor ring lasers with negative optoelectronic and incoherent optical feedback

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