Vemuri, GautamWilkey, AndrewJoglekar, Yogesh2023-04-072023-04-072021-08Vemuri, G., Wilkey, A., & Joglekar, Y. (2021). Exceptional points in anti-PT symmetric system of delay coupled semiconductor lasers. Active Photonic Platforms XIII, 11796, 14–21. https://doi.org/10.1117/12.2593311978-1-5106-4430-4 978-1-5106-4431-1https://hdl.handle.net/1805/32290This paper will report on some features of a platform for the realization of an anti parity-time (anti-PT) symmetric system in a pair of time-delay coupled semiconductor lasers, with special emphasis on the delay induced dynamics in the system. The system is modeled by a modified Lang-Kobayashi rate equations model, augmented to include delayed coupling. The role of a phase accumulation factor that arises from the delayed coupling is elucidated. Finally, the novel exceptional point(s) behavior that is characteristic of the time-delay is investigated via numerics as well as analytically via the Lambert W function.en-USPublisher PolicySemiconductor lasersSensorsLaser systems engineeringNumerical simulationsArticle