The development of non-Hermitian parity-time (PT) symmetric quantum mechanics has offered a powerful platform to engineer novel device functionality for integrated photonics. In this chapter, we review the chip-scale applications of PT-symmetry in photonic devices, including the implementation of the unidirectional reflectionless PT metamaterial, coherent asymmetric light-light switching, and orbital angular momentum (OAM) laser on-chip. We study the optical analogy of non-Hermitian PT systems, manipulate the complex refractive index properties such as gain/loss modulation, and investigate the unique wave transport characteristics near the exceptional point (EP) to achieve these intriguing on-chip functionalities.
CITATION STYLE
Pan, M., Miao, P., Zhao, H., Zhang, Z., & Feng, L. (2018). PT-Symmetry on-a-chip: Harnessing optical loss for novel integrated photonic functionality. In Springer Tracts in Modern Physics (Vol. 280, pp. 33–52). Springer Verlag. https://doi.org/10.1007/978-981-13-1247-2_2
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