Results 321 to 330 of about 308,424 (390)
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Cross gain modulation in semiconductor optical amplifier
SPIE Proceedings, 1999We have performed cross gain modulation measurements on a 2-section semiconductor optical amplifier (SOA) using pulsed pump and probe beams. The probe amplitude and pulse width under this condition has been measured and analyzed. The results of the analysis are in agreement with the experimental data.
H. Fan +5 more
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Photoluminescence and Optical Gain in CuBr Semiconductor Nanocrystals
physica status solidi (b), 2001Size-dependent excitonic photoluminescence (PL) of CuBr nanocrystals is studied using both, resonant and band-to-band excitation. Narrow excitonic emission lines observed in big nanocrystals (mean radius >5 nm) transform into two wide emission bands in smaller nanocrystals.
B. Hönerlage +3 more
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Semiconductor optical amplifiers with nanostructured gain material
Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, 2008We describe state-of-the-art semiconductor optical amplifiers based on nanostructured gain media. We highlight the broad bandwidth and the complex cross saturation dynamics which enables multi-wavelength amplification and signal processing.
Johann Peter Reithmaier, Gadi Eisenstein
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Gain recovery dynamics in semiconductor optical amplifier
Optics Communications, 2001We develop a time-domain model for gain recovery dynamics in a semiconductor optical amplifier (SOA). This model allows to explain the gain overshoot which can be observed in the temporal dynamics of SOA gain after the crossing of a short saturating pump pulse. We show the good agreement between experimental and numerical results.
I. Valiente +2 more
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Journal of optical communications, 2019
Wavelength division multiplexing (WDM) is a very important technique to utilize the bandwidth of optical fiber; multiple channels can be transmitted in the same fiber cable at the same time, and each channel has individual wavelength.
I. Amiri +3 more
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Wavelength division multiplexing (WDM) is a very important technique to utilize the bandwidth of optical fiber; multiple channels can be transmitted in the same fiber cable at the same time, and each channel has individual wavelength.
I. Amiri +3 more
semanticscholar +1 more source
Gain recovery of bulk semiconductor optical amplifiers
IEEE Photonics Technology Letters, 1998The gain recovery time of 1.55-/spl mu/m bulk semiconductor optical amplifiers (SOA's) with lengths from 500 to 1500 /spl mu/m has been measured with a continuous-wave (CW) probe in the time domain. It is shown to decrease with increasing length down to 60 ps for the longest SOA. This behavior is theoretically explained.
G. Guekos, F. Girardin, A. Houbavlis
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DIRECT DETERMINATION OF OPTICAL GAIN IN SEMICONDUCTOR CRYSTALS
Applied Physics Letters, 1971We report a new technique for measuring the stimulated emission spectrum and optical gain of semiconductor materials. Amplified spontaneous emission is used to determine the gain factor by relating the measured variation in light output to variation in the length of the excitation beam.
K. L. Shaklee, R. F. Leheny
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Gain-coupled optical logic in semiconductor lasers
Applied Optics, 1990A new form of optical logic device has been devised giving NOT, NOR and NAND functions. It is based on gain competition between two optical modes in a semiconductor waveguide cavity. These modes are spatially separated at the input-output facet providing high input/output isolation. The input also sees very low reflection. Although the device relies on
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Journal of Lightwave Technology, 2019
We report on the use of semiconductor optical amplifiers (SOAs) to extend the optical bandwidth of next generation optical systems. After discussing the technological progress and the motivation for rekindling the interest in SOAs for line amplification,
J. Renaudier, A. Ghazisaeidi
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We report on the use of semiconductor optical amplifiers (SOAs) to extend the optical bandwidth of next generation optical systems. After discussing the technological progress and the motivation for rekindling the interest in SOAs for line amplification,
J. Renaudier, A. Ghazisaeidi
semanticscholar +1 more source
Semiconductor optical amplifier length effects on gain dynamics
Journal of Physics D: Applied Physics, 2003We study theoretically semiconductor optical amplifier (SOA) length effects on gain dynamics when a short saturating pulse (pump) is either co- or counter-propagative with the probe. More specifically, we focus our attention on SOA recovery dynamics and gain overshoot.
Ginovart, Frédéric, Simon, Jean-Claude
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