Modeling of nonlinear absorption and refraction in quantum-well structures for all optical switching

Campi, D.; Bradley, P.J.; Calvani, R.; Caponi, R.

doi:10.1109/3.214500

Cited by 14 publications

(5 citation statements)

References 46 publications

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“…R is dependent on the working wavelength λ work and on the carrier density N c through the parameters η and φ. To reduce the computation time, this dependence was described through a phenomenological model based on independently measured data and on simulations of the nonlinear absorption obtained from the equation of Bethe-Salpeter in momentum space [31], [32]. The numerical results of η = f (λ work , N c ) obtained with this model and shown in Fig.…”

Section: B Fabry-perot Modelmentioning

confidence: 99%

Analysis of thermal limitations in high-speed microcavity saturable absorber all-optical switching gates

Massoubre

Oudar

O’Hare

et al. 2006

J. Lightwave Technol.

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The limitations owing to device heating and thermo-optic effects in high-speed quantum-well microcavity saturable absorber devices are investigated both theoretically and experimentally. A simplified theoretical description of the device electronic, thermal, and optical properties is developed and applied to the modeling of the device switching characteristics for reamplification + reshaping step (2R) all-optical regeneration. These predictions are compared to nonlinear optical measurements performed with switching pulses of fixed duration and variable repetition rate on two devices with significantly different thermal properties. It is shown that proper optimization of the device thermal properties is crucial to avoid the degradation of device performance at high bit rate. It is also shown that the negative effects of optically induced heating on the switching contrast may be compensated to some extent by operating the device on the long wavelength side of the microcavity resonanc

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Section: B Fabry-perot Modelmentioning

confidence: 99%

Analysis of thermal limitations in high-speed microcavity saturable absorber all-optical switching gates

Massoubre

Oudar

O’Hare

et al. 2006

J. Lightwave Technol.

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“…15 and generalized to include effects of the finite well width and of multiple subbands in the valence band. 16 This model predicts, in the wavelength range and for the MQW structure examined here, that both negative refractive changes and positive absorptive changes should occur when the optical injected power is raised. This result is particularly important in view of the interpretation of the type of bistability observed here.…”

mentioning

confidence: 76%

“…In our calculations, we used a model described in Ref. 16, based on the theory expounded in Ref. 15 and generalized to include effects of the finite well width and of multiple subbands in the valence band.…”

mentioning

confidence: 99%

Butterfly bistability in an InGaAs/InP multiple-quantum well waveguide with distributed feedback

Coriasso

Campi

Cacciatore

et al. 1995

Applied Physics Letters

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We report the experimental observation of butterfly bistability in an InGaAs/InP multiple-quantum well waveguide with a distributed feedback grating, under cw operation and at sub-milliwatt input power. Plasma effects on the excitonic optical properties in multiple-quantum well structures are the basis of the observed bistability. Insight provided by a simple coupled-mode description of the device and by many-body theory of the field-matter interaction is used both for device design and for interpretation of the results. In particular, the unconventional shape of the hysteresis is due to increased optical absorption at high injected optical power.

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“…The complex refractive index of a semiconductor quantum-well material can be written as [17,21] n = n 0 + n 2S…”

Section: Nonlinear Fabry-perot Parameters Optimizationmentioning

confidence: 99%

Reflective vertical cavity semiconductor saturable absorber for functional operations with thermal limitations and saturable index change

Pradhan

Hussain

Datta

2011

Optics Communications

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Modeling of nonlinear absorption and refraction in quantum-well structures for all optical switching

Cited by 14 publications

References 46 publications

Analysis of thermal limitations in high-speed microcavity saturable absorber all-optical switching gates

Analysis of thermal limitations in high-speed microcavity saturable absorber all-optical switching gates

Butterfly bistability in an InGaAs/InP multiple-quantum well waveguide with distributed feedback

Reflective vertical cavity semiconductor saturable absorber for functional operations with thermal limitations and saturable index change

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