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MIT Lincoln Laboratory MIT UROP Technical Assistant in Lexington, Massachusetts

“Development of Self-Phase Modulation Analysis Code”

Research Area: Laser Communications

Self-phase modulation (SPM) is a non-linear interaction in optical fibers that occurs at high intensity levels, and is particularly troublesome when phase modulation is used for data encoding. To understand the impact of this effect on a communications link, it is useful to accurately quantify the relationship between signal power and the magnitude of the phase shift observed by a coherent receiver. A MATLAB® program designed to perform an off-line analysis of this effect is currently in an early stage of development; however, this code lacks a user-friendly I/O interface and the documentation needed to enable experimentalists to utilize this software in a real-time laboratory environment. If time permits, the work can be extended to multi-wavelength communications waveforms, where both self- and cross-phase modulation, as well as four-wave mixing (all manifestations of the same nonlinear process) can impact performance.

The goal of this project is the development of a robust software module that could be transferred to laboratory hardware in order to provide a near real-time assessment and visualization of the observed signal degradation due to self-phase modulation.

The candidate for this position should be pursuing an undergraduate degree in physics or engineering at MIT, and have proficiency in both MATLAB and Simulink®. Students with a basic understanding of communication theory and some experience with fiber optics would be given preference.

MIT Lincoln Laboratory is an Equal Employment Opportunity (EEO) employer. All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability status, or genetic information; U.S. citizenship is required.

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