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We present the utilization of δ-doping to mitigate the rise in nonlinear gain compression in highly-strained InGaAs VCSELs and compare it with unstrained and undoped active region designs. High-speed 25 Gbps operation is also demonstrated.
Integrating optical interconnects into the next-generation multi-/many-core architecture has been considered a viable solution to addressing the limitations in throughput, latency, and power efficiency of electrical interconnects. Optical interconnects also allow the performance growth of inter-core connectivity to keep pace with the growth of the cores' processing ability. However, variations in...
On-chip optical communication infrastructure has been proposed to provide higher bandwidth and lower power consumption for the next-generation high performance multicore systems. Online calibration of these optical components is essential to building a robust optical communication system, which is highly sensitive to process and thermal variation. However, the power consumption of existing tuning...
Novel three-terminal field-induced charge-separation lasers (FICSLs) in VCSEL form were designed and fabricated. The new gain modulation mechanism of hole-electron separation was demonstrated for the first time by applying a variable gate voltage with a constant injection current to the active region.
Vertical-cavity lasers with strained active regions show increased modulation rates and reliability at lower power dissipation. However, their longer wavelength (980-1100 nm) than the standard 850 nm has inhibited their widespread adoption. Given the huge emerging markets for high-speed, high-efficiency data links, should this inhibition be overcome?
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