We report a study on modeling, designing, and testing an integrated photonic structure based on a sequence of two taiji microresonators coupled with a middle link microresonator. The so called taiji-CROW device exhibits strong unidirectional reflection by design and a non-reciprocal intermodal coupling due to its non-Hermitian nature. Our study provides design constraints to preserve the ideal operation of the structure by quantifying a minimum ratio between the coupling coefficients and the backscattering coefficients. This ratio is valuable to avoid surface roughness problems in designing topological integrated photonic devices based on arrays of microresonators.
Investigating the Spectral Response of a Taiji-CROW Device / Aslan, Bülent; Franchi, Riccardo; Biasi, Stefano; Ali, Salamat; Pavesi, Lorenzo. - 402:(2024), pp. 353-359. (Intervento presentato al convegno The 25th European Conference on Integrated Optics. ECIO 2024 tenutosi a Aachen (Germany) nel 17 - 19 June, 2024) [10.1007/978-3-031-63378-2_58].
Investigating the Spectral Response of a Taiji-CROW Device
Franchi, Riccardo;Biasi, Stefano;Ali, Salamat;Pavesi, Lorenzo
2024-01-01
Abstract
We report a study on modeling, designing, and testing an integrated photonic structure based on a sequence of two taiji microresonators coupled with a middle link microresonator. The so called taiji-CROW device exhibits strong unidirectional reflection by design and a non-reciprocal intermodal coupling due to its non-Hermitian nature. Our study provides design constraints to preserve the ideal operation of the structure by quantifying a minimum ratio between the coupling coefficients and the backscattering coefficients. This ratio is valuable to avoid surface roughness problems in designing topological integrated photonic devices based on arrays of microresonators.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione