Nonreciprocal cross-polarization coupling in whispering-gallery microresonators

Karleyda Sandoval; Mohmad Junaid Ul Haq; A. T. Rosenberger

doi:10.1117/12.2657320

8 March 2023 Nonreciprocal cross-polarization coupling in whispering-gallery microresonators

Karleyda Sandoval, Mohmad Junaid Ul Haq, A. T. Rosenberger

Proceedings Volume 12447, Quantum Sensing, Imaging, and Precision Metrology; 1244712 (2023) https://doi.org/10.1117/12.2657320
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

Coupling of light from a microresonator TE mode to a coresonant TM mode will have a different strength than that of coupling from the TM mode to the TE mode. This coupling nonreciprocity, deriving from the optical spin-orbit interaction, is modeled numerically and confirmed experimentally by observing coupled-mode induced transparency and AutlerTownes splitting. By measuring the throughput spectrum in both polarizations when the input directly excites modes of only one polarization, the coupling strengths in both directions can be determined simultaneously by fitting to the numerical model. Some examples and implications are discussed here.

Conference Presentation

Citation Download Citation

Karleyda Sandoval, Mohmad Junaid Ul Haq, and A. T. Rosenberger "Nonreciprocal cross-polarization coupling in whispering-gallery microresonators", Proc. SPIE 12447, Quantum Sensing, Imaging, and Precision Metrology, 1244712 (8 March 2023); https://doi.org/10.1117/12.2657320

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