A low confinement loss double-photonic crystal fibre over 850 nm bandwidth with 26 orbital angular momentum modes transmission. Issue 18 (24th October 2018)

• Record Type: Journal Article
• Authors: Wang, Ning; Xie, Ji-Long; Jia, Hong-Zhi; Chen, Ming-Ming
• Is Part Of: Journal of modern optics. Volume 65:Issue 18(2018)
• Page Start: 2060
• Page End: 2064
• Publication Date: 2018-10-24
• Subjects: Orbital angular momentum -- photonic crystal fibre -- low confinement loss; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2018.1496285
• Languages: English
• ISSNs: 0950-0340

Abstract

ABSTRACT: In this paper, a new double-photonic crystal fibre (D-PCF) is proposed and numerically investigated, result shows that can support angular momentum (OAM) mode transmission up to 26. Based on As2 S3 substrate, the proposed D-PCF is composed of three well-ordered air-hole rings in the cladding and another several air-hole rings at the centre. Due to the large effective index difference greater than 10 −4 between eigenmodes, OAM can be well separated with the proposed D-PCF. In addition, the confinement loss of less than 7 × 10 −9 dB/m for all eigenmodes is obtained with wavelengths spanning from 1.25 to 2.1 µm, where the optical wave can be confined closely within the core of D-PCF. With these beneficial properties, the designed D-PCF could enable large-capacity transmission in high-speed communications.