Design and characterization of a universal heterostructure for photonic integrated circuit applications
Crook, Andrew Charles
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Permalink
https://hdl.handle.net/2142/22162
Description
Title
Design and characterization of a universal heterostructure for photonic integrated circuit applications
Author(s)
Crook, Andrew Charles
Issue Date
1995
Doctoral Committee Chair(s)
DeTemple, Thomas A.
Department of Study
Electrical and Computer Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Language
eng
Abstract
Creating a Universal Optical Heterostructure as the foundation on which many photonic integrated circuits can be fabricated was the goal of this research. This is achieved by improving the functionality of a laser heterostructure for performing the many necessary functions of opto-electronic integrated circuits. This single heterostructure may not have a performance as good as that for a heterostructure optimized to perform a specific function, but the overall gain attained by making compromises in which many devices can work together is considered. The main functions examined are: forward bias properties of laser thresholds, reverse bias properties of modulators and detectors, and passive properties of insertion loss and routing.
The final structure which was grown had a measured laser performance comparable to that of other laser structures of the same core size. Curved waveguides fabricated by wet etching had linear and bend losses which were comparable to bends fabricated on other laser heterostructures. The figures of merit for waveguide electroabsorption modulators fabricated from the structure lie between those which are based on excitons and those of Franz-Keldysh modulators. Because the single heterostructure is able to perform multiple device functions well, this makes it appropriate for OEIC applications.
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