Broadband and tunable bandgap guidance based on ring-pattern liquid-filled photonic crystal fibers

Bing Sun, Yaqi Wen, Taiyu Bian, Fei Li, Kaiming Zhou, Zuxing Zhang

Research output: Contribution to journalArticlepeer-review


A ring-pattern liquid-filled photonic crystal fiber (R-LPCF) scheme, in which the first-ring holes (the six holes adjacent to the core) are filled with high-index inclusions, has been experimentally demonstrated to extend over a wide-guided spectral range. In such new fiber, the bandgap-like core mode is investigated, among which the telecommunication bandgap exhibits confinement losses five orders of magnitude smaller than those of the corresponding fully liquid-filled photonic bandgap fibers. Besides, the R-LPCF serving the thermal tunability when filled with index-matching liquid enables guided bandwidth switching from the 1.5-µm-band to the 1.3-µm-band communication window. Moreover, the structural parameters for two commercial photonic crystal fiber are quantified to confirm the feasibility of the proposed method.

Original languageEnglish
Pages (from-to)2157-2160
Number of pages4
JournalOptics Letters
Issue number9
Early online date19 Apr 2022
Publication statusPublished - 1 May 2022

Bibliographical note

© 2022 Optica Publishing Group. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: . Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Funding Information:
National Natural Science Foundation of China (91950105, 62175116); The Outstanding Chinese and Foreign Youth Exchange Program of China Association for Science and Technology; Association Youth Science and Technology Talent Promotion; 1311 Talents Program of Nanjing University of Posts and Telecommunications (Dingxin); H2020 Marie Sk?odowska-Curie Actions (891685). .


Dive into the research topics of 'Broadband and tunable bandgap guidance based on ring-pattern liquid-filled photonic crystal fibers'. Together they form a unique fingerprint.

Cite this