Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 28, Issue 13, Pages 1426-1429Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2016.2551325
Keywords
Fiber design and fabrication; optical vortices; photonic crystal fibers; multiplexing
Funding
- Fund of State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, China
- National Natural Science Foundation of China [61571057]
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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 mu m, the designed C-PCF has a very low confinement loss of 3.434 x 10(-9) dB/m for HE41 mode and a relatively low nonlinear coefficient of 3.979 W-1 km(-1) for EH31 mode. The common bandwidth for the four orders of OAM modes is as large as 560 nm (about 1.25 mu m-1.81 mu m), 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 mu m to 2 mu m for TE01 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.
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