The influence of lateral carrier diffusion and surface recombination on the behavior of semiconductor optical amplifier (SOA)-based MMIs

Merlier, J. De; Morthier, Geert; Baets, Roel

doi:10.1109/jqe.2003.813191

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“…When the pulsed current is increased, the lateral distribution of the carrier density might disturb the stepindex profile, which in turn affect the real and imaginary parts of the refractive index and, thus, affect the modal gain inside the MMI region. 14) Therefore, current modulation and the resultant perturbations of the lateral step-index profile might degrade the self-imaging properties of the MMI-LD and cause jitter. The threshold carrier density of an MMI-LD is approximately 10 18 cm À3 .…”

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confidence: 99%

1 V and Stable Dynamic Operation of Laser Diode Using Active Multi-Mode Interferometer

Shimizu

Razali

Kasahara

et al. 2005

Jpn. J. Appl. Phys.

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We consider the vacuum response of a particle detector in anti-de Sitter spacetime, and in particular analyze how spacetime features such as curvature and dimensionality affect the response spectrum of an accelerated detector. We calculate useful limits on Wightman functions, analyze the dynamics of the detector in terms of vacuum fluctuations and radiation reactions and discuss the thermalization process for the detector. We also discuss a generalization of the GEMS approach and obtain the Gibbons-Hawking temperature of de Sitter spacetime as an embedded Unruh temperature in a curved anti-de Sitter spacetime.

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confidence: 99%