40 Gb/s Mode-Division Multiplexed DD-OFDM Transmission Over Standard Multi-Mode Fiber

Luo, Jiawei; Li, Jianping; Shu, Qi; Li, Zhaohui; Lu, Chao

doi:10.1109/jphot.2016.2571981

Cited by 12 publications

(1 citation statement)

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“…At the same time, the optical spatial division multiplexing (SDM) technology, which is the last physical dimension to increase transmission capacity, has been studied widely in short-reach optical interconnection in terms of its flexibility and low cost [17], [18]. As one category of SDM, mode division multiplexing (MDM) has also been studied recently [19]. For example, orbital angular momentum (OAM) [20], linearly polarized mode (LPM) [21] and cylindrical vector beam (CVB) [22] have been demonstrated in MDM-based shortreach optical interconnection as the individual channels.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Low-Cost EML Based 240 Gbit/s DFT-Spread DMT Signal Transmission Over Few-Mode Fiber With Cylindrical Vector Beam Multiplexing

Sun

Zou

et al. 2019

IEEE Access

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In this paper, we experimentally demonstrated the high-speed low-cost mode-divisionmultiplexed (MDM) discrete multi-tone (DMT) signal transmission based on cylindrical vector beam (CVB) multiplexing over few-mode fiber (FMF) with intensity modulation and direct detection (IM/DD) utilizing electro-absorption modulated laser (EML). Two CVBs (TM01 and TE01 modes) are employed for signal transmission simultaneously with the minimum mode isolation of 16.7 dB between them after transmission over 5 m 4-mode FMF. The digital discrete Fourier transform-spread (DFT-spread) and pre-equalization techniques are implemented in transmitter to improve the system performance. By adopting the proposed schemes, the 240 Gbit/s DFT-spread DMT signal has been transmitted successfully over 5 m FMF below the bit-error-ratio (BER) of 3.8×10 −3 which is the hard-decision forward-error-correction (HD-FEC) threshold. The required received optical powers (ROPs) of the two CVBs (TM01 and TE01 modes) are −7.27 dBm and −7.15 dBm, respectively. The experimental results show that CVB-based multiplexing technology combined with advanced modulation format could be a potential candidate for high-speed low-cost server backplane optical interconnection. INDEX TERMS High-speed backplane, optical interconnection, cylindrical vector beam (CVB), few-mode fiber, mode division multiplexing.

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