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A photonic crystal fiber for supporting 30 orbital angular momentum modes with low dispersion

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Abstract

This paper proposes a novel photonic crystal optical fiber which can support 30 orbital angular momentum (OAM) modes transmission and possesses relatively flat and low dispersion. The OAM modes can be well-separated due to the large effective refractive index difference (above 10−4 ) between the eigenmodes. The only material of the designed fiber is silica. The dispersion of each OAM mode is controlled in the range of 50–100 ps·nm−1·km−1 and the total dispersion variation is below 10 ps·nm−1·km−1 from 1 500 nm to 1 600 nm. Moreover, the confinement loss of each OAM mode is below 8.17×10−10 dB/m at 1 550 nm, and the nonlinear coefficients is less than 0.71 W−1 /km for all modes at 1 550 nm. With all these good features, this proposed optical fiber is promising to be applied in fiber-based OAM communication systems.

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Author information

Correspondence to Yong You 游永.

Additional information

This work has been supported by the National Natural Science Foundation of China (Nos. 11704283, 11804250 and U1509207), and the Tianjin Natural Science Foundation (Nos.19JCQNJC01500 and 18JCQNJC71300).

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Huang, W., You, Y., Song, B. et al. A photonic crystal fiber for supporting 30 orbital angular momentum modes with low dispersion. Optoelectron. Lett. 16, 34–39 (2020). https://doi.org/10.1007/s11801-020-9072-7

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