Fabrication of heat-induced long-period gratings for mode conversion in few-mode fibers

Akrami, Parisah; Grüner-Nielsen, L.; Rishøj, Lars Søgaard; Rottwitt, Karsten

doi:10.1117/12.2576686

Cited by 2 publications

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“…The data is modulated at 10 Gb/s and a filter bandwidth of 10 GHz is emulated at the receiver. The obtained Q and the eye diagrams for the input signal and the two output signals corresponding to the LP 01 and LP 11 channels for 1 km transmission through TMGI fiber are shown in fig 24. The obtained Q for the two channels are 5.39 (BER Q = 3.5 × 10 −8 ) and 4.69 (BER Q = 1.3 × 10 −6 ) respectively.…”

Section: Mdm Transmission Using Air-clad Plsmentioning

confidence: 96%

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Air-clad photonic lanterns: fabrication and applications

Mathew

Grüner-Nielsen

Lillieholm

et al. 2022

J. Opt.

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The fabrication steps for an air-clad photonic lantern that can excite the first two LP mode groups in a multimode fiber are presented in this paper. A multiplexing crosstalk below -16.8 dB is measured on the fabricated lantern using S2 imaging technique over a wavelength of 1525 nm to 1575 nm. The de-multiplexing crosstalk is measured for both LP01 and LP11 mode groups as -16.8 dB and -9.4 dB respectively using loss measurements. 2× 40 Gb/s MIMO-less MDM transmission through 7 m of two mode step index fiber is demonstrated using the fabricated photonic lanterns. 2×10 Gb/s MIMO-less MDM transmission through 1.6 km standard 50/125 μm multimode fiber is also demonstrated and a Q value higher than 3.7 is obtained for both spatial channels over all input polarizations. Simple intensity modulation and direct detection schemes are used for these MDM transmissions.

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Section: Mdm Transmission Using Air-clad Plsmentioning

confidence: 96%

“…LP 11 mode is launched to the TMSI fiber next, using a long period grating (LPG) as shown in the set up in fig 18 . A thermal induced LPG, where the LP 01 mode is suppressed more than 15 dB, at wavelengths close to 1550 nm is used here [8,24]. The PDL for the three SMFs are measured as before.…”

Section: De-multiplexing Loss Measurementsmentioning

confidence: 99%