A New Type Circular Photonic Crystal Fiber for Orbital Angular Momentum Mode Transmission

• Published in: IEEE photonics technology letters Vol. 28; no. 13; pp. 1426 - 1429
• Main Authors: Zhang, Hu, Zhang, Wenbo, Xi, Lixia, Tang, Xianfeng, Zhang, Xia, Zhang, Xiaoguang
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.07.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bandwidth; Bandwidths; Fiber design and fabrication; Indexes; Multiplexing; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Optical vortices; Photonic crystal fibers; optical vortices; photonic crystal fibers; Fiber design and fabrication; multiplexing
• DOI: 10.1109/LPT.2016.2551325
• ISSN: 1041-1135

We proposed a new circular photonic crystal fiber (C-PCF), which can support 14 orbital angular momentum (OAM) modes transmission, with the good features of wide bandwidth, low confinement loss, and all OAM modes at the same size. At 1.55 μm, the designed C-PCF has a very low confinement loss of 3.434 × 10 -9 dB/m for HE41 mode and a relatively low nonlinear coefficient of 3.979 W -1 km -1 for EH 31 mode. The common bandwidth for the four orders of OAM modes is as large as 560 nm (about 1.25 μm-1.81 μm), which does cover all bands of optical fiber communication. Flat dispersion (a total dispersion variation of <;46.38 ps nm -1 km -1 over a 750-nm bandwidth from 1.25 μm to 2 μm for TE 01 mode) is another feature. With all these good features, the proposed C-PCF could be a well-promising OAM fiber for mode division multiplexing in high capacity fiber communication systems.