Date: Tuesday, November 05, 2024

Time:  Noon to 2:00 PM

Location: CHTM room 101 and zoom

Speaker:

Hosuk Lee

Thesis Committee:

Dr. Markek Osinski, Committee Chair, Department of Physics and Astronomy (Dual Appointment)
Dr. Payman Zarkesh-Ha, Department of Electrical and Computer Engineering
Dr. Ganesh Balakrishnan, Department of Electrical & Computer Engineering

Abstract:

The controversy regarding the validity of assuming different photon lifetimes for counterpropagating modes in ring resonators has persisted. This controversy has prompted a re-examination of the commonly held view that the output of the ring resonator structure, influenced by the Y-junction coupler, does not vary with the direction of propagation, regardless of structural symmetry. According to the provided three-dimensional finite-difference time-domain (FDTD) simulation results, the existing general assumptions about the operation of the Y-junction coupler are shown to be incorrect, as they stem from an oversimplified concept of reciprocity. Additionally, we provide an explanation for why our research results do not violate the Helmholtz reciprocity principle.

Biography:

Mr. Hosuk Lee is a master’s degree student in the Optical Science and Engineering program at the University of New Mexico (UNM), working under the guidance of Dr. Marek Osinski. His research primarily focuses on Finite Element Method and Finite Difference Time Domain simulations of photonic integrated circuits. In 2018, Hosuk received his Bachelor of Science degree in Computer Engineering from the UNM.