Low-resolution optical transmission using joint shaping technique of signal probability and quantization noise

Huang, Hongyu; Yu, Zhenming; Shen, Liang; Sun, Kaixuan; Yin, Feifei; Xu, Kun

doi:10.3788/col202321.050602

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…8, we show a PS-based FLCS-CPON system. PS is a technique that adjusts the entropy of transmitted signals by changing the signal's distribution [67][68][69][70][71][72] . As shown in the setup, only single-mode fiber (SMF) exists between the transmitter and receiver.…”

Section: Rate-adaptive Accesses For Flexible Cponmentioning

confidence: 99%

Untitled

2024

中国光学快报

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Increasing bandwidth requirements have posed significant challenges for traditional access networks. It is difficult for intensity modulation/direct detection to meet the power budget and flexibility requirements of the next-generation passive optical network (PON) at 100G and beyond considering the new requirements. This is driving researchers to develop novel optical access technologies. Low-cost, wide-coverage, and high-flexibility coherent PON is emerging as a strong contender in the competition. In this article, we will review technologies that reduce the complexity of coherent PON (CPON), enabling it to meet the commercial requirements. Also, advanced algorithms and architectures that can enhance system coverage and flexibility are also discussed.

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Section: Rate-adaptive Accesses For Flexible Cponmentioning

confidence: 99%

Untitled

2024

中国光学快报

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Low-resolution Kramers-Kronig detection system with error-feedback noise shaping

Dong,

Yu,

Huang

et al. 2024

Sci. China Inf. Sci.

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O-band EML and 4-bits DAC enabled 112 GBaud PAM8 transmission over a 10 km SSMF without optical amplifiers

Tang,

Cheng,

Liang

et al. 2024

Opt. Lett.

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The increasing traffic of intra-data center networks creates an urgent demand for low-cost and high-speed intensity modulation/direct detection (IM/DD) transmission. In this Letter, we propose a joint scheme combining nonlinear lookup table (NL-LUT) pre-distortion, digital pre-emphasis (DPE), and a digital resolution enhancer (DRE) to achieve high-speed and low-cost IM/DD optical links using a low-resolution digital-to-analog converter (DAC). The NL-LUT and DPE are responsible for the system nonlinear impairments and channel attenuation at high frequency, respectively, while DRE handles the quantization noise (QN) caused by high peak-to-average ratios (PAPRs) and low-resolution DAC. Leveraging the advanced pre-compensation scheme at the transmitter, we experimentally demonstrate the O-band transmission of 124 GBaud and 112 GBaud PAM8 over 2 km and 10 km SSMF, respectively, using only a 4 bits DAC and a simple 5-tap linear equalizer at the receiver-side. To the best of our knowledge, among the reported demonstrations using the low-resolution DAC without an optical amplifier, this work achieves the highest net rates of 310 Gb/s over 2 km and 280 Gb/s over 10 km of SSMF, respectively, which offers a promising solution for low-cost high-speed IM/DD transmission.

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Low-resolution optical transmission using joint shaping technique of signal probability and quantization noise

Cited by 5 publications

References 25 publications

Untitled

Untitled

Low-resolution Kramers-Kronig detection system with error-feedback noise shaping

O-band EML and 4-bits DAC enabled 112 GBaud PAM8 transmission over a 10 km SSMF without optical amplifiers

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