Optimized Eight-Dimensional Lattice Modulation Format for IM-DD 56 Gb/s Optical Interconnections Using 850 nm VCSELs

Abstract

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Enhanced Performance of Intensity Modulation With Direct Detection Using Golay Encoded Nyquist Pulses and Electronic Dispersion Compensation

“…In the context of IM/DD systems, the adoption of multidimensional coded modulation becomes relevant. Recent advancements, such as the optimized eight-dimensional lattice modulation format for IM-DD 56 Gbit/s optical interconnections using 850 nm VCSELs, demonstrate the potential of multi-dimensional approaches in IM/DD systems [20]. The ability of 24D Golay code to correct multiple bit errors makes it a promising candidate for enhancing IM/DD system performance.…”

24-Dimensional Modulation Formats for 100 Gbit/s IM-DD Transmission Systems Using 850 nm Single-Mode VCSEL

“…We compare the performance of Leech24D 2 with the conventional PAM-4 and the recently proposed eight-dimensional format, BB8 6 , in different transmission scenarios.…”

“…In 6 , an 8dimensional format enabled with eight consecutive symbols is proposed. However, the 24D formats with the similar principle for the IM-DD systems have not been investigated yet.…”

100G Flexible IM-DD 850 nm VCSEL Transceiver with Fractional Bit Rate Using Eight-Dimensional PAM

“…The concept of using four-dimensional (4D) formats in a rate flexible transceiver 3 and a multi-rate IM-DD transceiver using 4D formats 4 have been proposed. Recently, 8D modulation format has been reported for coherent detection 5,6 and IM-DD systems 7 . In this paper, we propose, design and experimentally investigate a flexible IM-DD transceiver with software-controlled bit rate, using a newly designed 8D format family, which has a spectrum efficiency granularity of 0.125 bit/sym.…”