Optical Science and Engineering ETDs

Publication Date

Fall 12-16-2024

Abstract

In this age of electronic warfare, directed energy research is of utmost importance to ensure national security, robust military defense systems and gain a competitive edge in research worldwide. This thesis explores the intentional directed energy impacts on electro-optic devices by developing analytical predictive models through experimental data validation. An electro-optic modulator known as Mach-Zehnder modulator (MZM) is used to understand the implications of intentional EMI. A low frequency RF signal is injected in the MZM to create an EMI environment. The MZM behavior changes due to EMI during a pseudo-random bit sequence signal modulation were studied through analyzing receiver end eye diagram characteristics. The eye diagram characteristics were modeled as a function of the injected RF signal power. Finally, an operation design space for MZMs under EMI is presented to forecast and overview the extreme operating limits of MZM.

Degree Name

Optical Science and Engineering

Level of Degree

Doctoral

Department Name

Optical Science and Engineering

First Committee Member (Chair)

Edl Schamiloglu

Second Committee Member

Payman Zarkesh-ha

Third Committee Member

Sameer Hemmady

Fourth Committee Member

Sang M. Han

Keywords

Electro-optic Modulator, Mach-Zehnder Modulator (MZM), Electromagnetic Interference (EMI), Eye Diagram, Optical Communication, Bit Error Rate (BER), Jitter

Sponsors

Air Force Office of Scientific Research (AFOSR), Air Force Research Lab (AFRL)

Document Type

Dissertation

Language

English

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