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physics.optics2026
Sagnac-Loop-Reflector Fabry-Perot Lattices for Modular 1D Topological Photonics
Siwoo Kim, Yung Kim, Semin Choi +5
We introduce a modular silicon-photonic Fabry-Perot resonator lattice based on cascaded tunable Sagnac loop reflectors. Each SLR is controlled by a single directional-coupler cross…
physics.optics2025
Analogs of spontaneous emission and lasing in photonic time crystals
Kyungmin Lee, Minwook Kyung, Yung Kim +7
We report the first direct mapping of the frequency-resolved local density of states (LDOS) in a photonic time crystal (PTC) implemented as an array of time-periodically modulated…