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Title:Electrical parasitics and parameter extraction of photonic crystal vertical-cavity surface-emitting lasers
Author(s):Dave, Harshil
Advisor(s):Choquette, Kent D.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Electrical parasitics
Photonic crystal
Vertical-cavity surface-emitting laser (VCSEL)
Small signal
High speed
Abstract:Directly modulated vertical-cavity surface-emitting lasers (VCSELs) are the dominant digital light source in short-haul data communication links. To address the ever-increasing demand for improved performance, namely the power consumption, data rate, and device reliability, single mode proton-implanted photonic crystal vertical-cavity surface-emitting lasers have been designed and fabricated for high power and high speed operation. To characterize performance of these devices, we perform DC and small signal modulation analysis. Impedance characteristics and electrical parasitics are studied for various photonic crystal designs to understand factors which limit high speed modulation. Photonic crystal designs are found to have low differential resistance, but high parasitic capacitance. By including a diffusion capacitance term in the modulation response equation, scattering parameter fitting suggests the diffusion capacitance to be the limiting factor of intensity modulation. Extracted parameters from DC, impedance, and modulation response measurements are cross-checked to verify accuracy.
Issue Date:2017-04-25
Rights Information:Copyright 2017 Harshil Dave
Date Available in IDEALS:2017-08-10
Date Deposited:2017-05

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