Electrical parasitics and parameter extraction of photonic crystal vertical-cavity surface-emitting lasers

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.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2017

Author dc:creator

• Dave, Harshil

Contributors dc:contributor

• Choquette, Kent D.

• Electrical parasitics
• Photonic crystal
• Vertical-cavity surface-emitting laser (VCSEL)
• Small signal
• High speed

Statement dc:rights

• Copyright 2017 Harshil Dave

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/97449

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/97449