The Experts below are selected from a list of 388812 Experts worldwide ranked by ideXlab platform
D Bimberg - One of the best experts on this subject based on the ideXlab platform.
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frequency response of large aperture oxide confined 850 nm vertical cavity surface emitting lasers
Applied Physics Letters, 2009Co-Authors: A Mutig, S A Blokhin, A M Nadtochiy, G Fiol, J A Lott, V A Shchukin, N N Ledentsov, D BimbergAbstract:Small and large signal modulation measurements are carried out for 850 nm vertical cavity surface emitting lasers (VCSELs). The resonance frequency, damping factor, Parasitic frequency, and D-factor are extracted. Small signal modulation bandwidths larger than 20 GHz are measured. At larger currents the frequency response becomes partially limited by the Parasitics and damping. Our results indicate that by increasing the Parasitic frequency, the optical 3 dB bandwidth may be extended to ∼25 GHz. A decrease in the damping should enable VCSEL bandwidths of 30 GHz for current densities not exceeding ∼10 kA/cm2 and ultimately error-free optical links at up to 40 Gbit/s.
J S Harris - One of the best experts on this subject based on the ideXlab platform.
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direct extraction of the algaas gaas heterojunction bipolar transistor small signal equivalent circuit
IEEE Transactions on Electron Devices, 1991Co-Authors: D Costa, J S HarrisAbstract:The authors describe a novel, direct technique for determining the small-signal equivalent circuit of a heterojunction bipolar transistor (HBT). The Parasitic elements are largely determined from measurements of test structures, reducing the number of elements determined from measurements of the transistor. The intrinsic circuit elements are evaluated from y-parameter data, which are DC-embedded from the known Parasitics. The equivalent-circuit elements are uniquely determined at any frequency. The validity of this technique is confirmed by showing the frequency independence of the extracted circuit elements. The equivalent circuit models the HBT s-parameters over a wide range of collector currents. Throughout the entire 1-18-GHz frequency range, the computed s-parameters agree very well with the experimental data. >
A Mutig - One of the best experts on this subject based on the ideXlab platform.
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frequency response of large aperture oxide confined 850 nm vertical cavity surface emitting lasers
Applied Physics Letters, 2009Co-Authors: A Mutig, S A Blokhin, A M Nadtochiy, G Fiol, J A Lott, V A Shchukin, N N Ledentsov, D BimbergAbstract:Small and large signal modulation measurements are carried out for 850 nm vertical cavity surface emitting lasers (VCSELs). The resonance frequency, damping factor, Parasitic frequency, and D-factor are extracted. Small signal modulation bandwidths larger than 20 GHz are measured. At larger currents the frequency response becomes partially limited by the Parasitics and damping. Our results indicate that by increasing the Parasitic frequency, the optical 3 dB bandwidth may be extended to ∼25 GHz. A decrease in the damping should enable VCSEL bandwidths of 30 GHz for current densities not exceeding ∼10 kA/cm2 and ultimately error-free optical links at up to 40 Gbit/s.
A M Nadtochiy - One of the best experts on this subject based on the ideXlab platform.
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frequency response of large aperture oxide confined 850 nm vertical cavity surface emitting lasers
Applied Physics Letters, 2009Co-Authors: A Mutig, S A Blokhin, A M Nadtochiy, G Fiol, J A Lott, V A Shchukin, N N Ledentsov, D BimbergAbstract:Small and large signal modulation measurements are carried out for 850 nm vertical cavity surface emitting lasers (VCSELs). The resonance frequency, damping factor, Parasitic frequency, and D-factor are extracted. Small signal modulation bandwidths larger than 20 GHz are measured. At larger currents the frequency response becomes partially limited by the Parasitics and damping. Our results indicate that by increasing the Parasitic frequency, the optical 3 dB bandwidth may be extended to ∼25 GHz. A decrease in the damping should enable VCSEL bandwidths of 30 GHz for current densities not exceeding ∼10 kA/cm2 and ultimately error-free optical links at up to 40 Gbit/s.
S A Blokhin - One of the best experts on this subject based on the ideXlab platform.
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frequency response of large aperture oxide confined 850 nm vertical cavity surface emitting lasers
Applied Physics Letters, 2009Co-Authors: A Mutig, S A Blokhin, A M Nadtochiy, G Fiol, J A Lott, V A Shchukin, N N Ledentsov, D BimbergAbstract:Small and large signal modulation measurements are carried out for 850 nm vertical cavity surface emitting lasers (VCSELs). The resonance frequency, damping factor, Parasitic frequency, and D-factor are extracted. Small signal modulation bandwidths larger than 20 GHz are measured. At larger currents the frequency response becomes partially limited by the Parasitics and damping. Our results indicate that by increasing the Parasitic frequency, the optical 3 dB bandwidth may be extended to ∼25 GHz. A decrease in the damping should enable VCSEL bandwidths of 30 GHz for current densities not exceeding ∼10 kA/cm2 and ultimately error-free optical links at up to 40 Gbit/s.
