Characterization of surface-states in a hollow core photonic crystal fiber

Autor(es)

Lamilla, Erick ^[1] ; Faria, Maicon S. ^{[1, 2]} ; Aldaya, Ivan ^{[1, 3]} ; Jarschel, Paulo F. ^[1] ; Pita, Julian L. ^[4] ; Dainese, Paulo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Inst Phys Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

^[2] Natl Ctr High Performance Comp Sao Paulo CENAPAD, BR-13083889 Campinas, SP - Brazil

^[3] State Univ Sao Paulo UNESP, Campus Sao Joao da Boa Vista, BR-13876750 Sao Paulo, SP - Brazil

^[4] Univ Campinas UNICAMP, Sch Elect & Comp Engn, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Optics Express; v. 26, n. 25, p. 32554-32564, DEC 10 2018.
• Citações Web of Science: 0

Resumo

Surface or edge states represent an important class of modes in various photonic crystal systems such as in dielectric topological insulators and in photonic crystal fibers. In the later, strong attenuation peaks in the transmission spectrum are attributed to coupling between surface and core-guided modes. Here, we explore a modified implementation of the spatial and spectral interference method to experimentally characterize surface modes in photonic crystal fibers. Using an external reference and a non-uniform Fourier transform windowing, the obtained spectrogram allows clear observation of anti-crossing behavior at wavelengths in which surface and core modes are strongly coupled. We also detect surface modes with different spatial symmetries, and give insight into mode families couple to the fundamental or high-order core modes, as well as the existence of uncoupled surface modes. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (AU)

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