Structure-induced asymmetry between counterpropagating modes in three-port couplers

Marek Osiński; Hosuk Lee; Hemashilpa Kalagara; Gennady A. Smolyakov

doi:10.1117/12.2295234

23 February 2018 Structure-induced asymmetry between counterpropagating modes in three-port couplers

Marek Osiński, Hosuk Lee, Hemashilpa Kalagara, Gennady A. Smolyakov

Proceedings Volume 10526, Physics and Simulation of Optoelectronic Devices XXVI; 1052615 (2018) https://doi.org/10.1117/12.2295234
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

The continuing controversy regarding the validity of assuming different photon lifetimes for counterpropagating modes in whistle-geometry ring resonators has led us to re-examine the commonly held view that coupling coefficients between any two ports in Y-junction couplers (regardless of their symmetry) do not depend on the direction of propagation. Rigorous three-dimensional finite-difference time-domain simulations show that the common assumptions about the operation o three-port couplers are sometimes grossly incorrect, as they arise from an oversimplified analytical model. An explanation is given why our results do not violate the Helmholtz reciprocity principle.

Citation Download Citation

Marek Osiński, Hosuk Lee, Hemashilpa Kalagara, and Gennady A. Smolyakov "Structure-induced asymmetry between counterpropagating modes in three-port couplers", Proc. SPIE 10526, Physics and Simulation of Optoelectronic Devices XXVI, 1052615 (23 February 2018); https://doi.org/10.1117/12.2295234

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