Low-Cost/Power Coherent Transceivers for Intra-Datacenter Interconnections and 5G Fronthaul Links

Tomkos, Ioannis; Толмачев, А. А.; Agmon, A.; Meltsin, Maxim; Νίκας, Θωμάς; Nazarathy, Moshe

doi:10.1109/icton.2019.8840195

Cited by 7 publications

(14 citation statements)

References 13 publications

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“…Tomkos et al [8] conducted a survey on low-cost and lowpower coherent optical transceivers for 5G front haul links and datacenter interconnection applications. Their paper surveyed several options to achieve a DSP-chip-less coherent optical fiber communication system for cost-cutting.…”

Section: A Existing Surveys Studies and Methodology Of This Workmentioning

confidence: 99%

A Comparative Survey of Coding, Multiplexing, and Equalization Techniques Used in Coherent Optical Fiber Communications

Ladrido¹,

Trinidad²,

Molina³

et al. 2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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As the world advances into 5G networks, significant scientific research accomplishments are being conducted for a communication system that could further enhance the current limit of data transmission capacity. Currently, the communication systems with the highest data rate are optical fiber systems. Due to the recent advancement of coherent optical fiber communications by exploiting time, wavelength, phase, amplitude, polarization, and space, optical engineering can break the petabit barrier data rate. Thus, coherent optical fiber communications is a hot topic due to its very high data rate that could be applied or a requirement in 5G and big data analytics. This paper focuses on a comparative survey of the current applied fundamental techniques in fiber communication channels. These fundamental techniques that could be further studied and exploited to increase the bandwidth performance, decrease the error rate and energy consumption are coding, multiplexing, and equalization. At the end of this paper, a comparative result is discussed to explain the difference among the current techniques in the literature for the optical engineering community to improve collective coding, multiplexing, and equalization in coherent fiber systems.

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Section: A Existing Surveys Studies and Methodology Of This Workmentioning

confidence: 99%

A Comparative Survey of Coding, Multiplexing, and Equalization Techniques Used in Coherent Optical Fiber Communications

Ladrido¹,

Trinidad²,

Molina³

et al. 2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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show abstract

“…Thus, direct detection can offer twice the rate once an analog polarization demultiplexer is realized. Along these lines, we can extend the benefits of IMDD by employing a novel PAM-M modulator that has been proposed recently using a parallel scheme of MZMs in order to relax the requirements of the eDACs [26]. In conclusion, even though simplified coherent solutions have been much more investigated and are presented in the upcoming paragraphs, a quantitative comparison between the conventional schemes, analog coherent, simplified coherent, and the two very similar architectures that share strong similarities between analog and simplified is introduced and tabulated in Table 2.…”

Section: All-optical Coherent and Simplified Coherent Solutions: Chal...mentioning

confidence: 99%

“…In conclusion, even though simplified coherent solutions have been much more investigated and are presented in the upcoming paragraphs, a quantitative comparison between the conventional schemes, analog coherent, simplified coherent, and the two very similar architectures that share strong similarities between analog and simplified is introduced and tabulated in Table 2. The all-optical receiver has been initially presented in [26] (see Figure 5 for its highlevel design), indicating the possibility of replacing the DSP chip with an all-optical analog front-end that can achieve most of the required functionality.…”

Section: All-optical Coherent and Simplified Coherent Solutions: Chal...mentioning

confidence: 99%

A Vision of 6th Generation of Fixed Networks (F6G): Challenges and Proposed Directions

Uzunidis,

Moschopoulos,

Papapavlou

et al. 2023

Telecom

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Humankind has entered a new era wherein a main characteristic is the convergence of various technologies providing services and exerting a major impact upon all aspects of human activity, be it social interactions with the natural environment. Fixed networks are about to play a major role in this convergence, since they form, along with mobile networks, the backbone that provides access to a broad gamut of services, accessible from any point of the globe. It is for this reason that we introduce a forward-looking approach for fixed networks, particularly focused on Fixed 6th Generation (F6G) networks. First, we adopt a novel classification scheme for the main F6G services, comprising six categories. This classification is based on the key service requirements, namely latency, capacity, and connectivity. F6G networks differ from those of previous generations (F1G–F5G) in that they concurrently support multiple key requirements. We then propose concrete steps towards transforming the main elements of fixed networks, such as optical transceivers, optical switches, etc., such that they satisfy the new F6G service requirements. Our study categorizes the main networking paradigm of optical switching into two categories, namely ultra-fast and ultra-high capacity switching, tailored to different service categories. With regard to the transceiver physical layer, we propose (a) the use of all-optical processing to mitigate performance barriers of analog-to-digital and digital-to-analog converters (ADC/DAC) and (b) the exploitation of optical multi-band transmission, space division-multiplexing, and the adoption of more efficient modulation formats.

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“…solution for short-reach links up to 800Gbps. Nevertheless, the cost reduction offered by silicon photonics may open some opportunities for high-speed coherent transceivers for Exascale computing [141,142]. In this regard, widely tunable hybrid lasers for the emitter and for the local oscillator at the receiver side, already developed in the C-band [143,144], might be of great interest in the future.…”

Section: Cu Simentioning

confidence: 99%

Silicon photonics for terabit/s communication in data centers and exascale computers

Bernabé

Wilmart

Hasharoni³

et al. 2021

Solid-State Electronics

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Low-Cost/Power Coherent Transceivers for Intra-Datacenter Interconnections and 5G Fronthaul Links

Cited by 7 publications

References 13 publications

A Comparative Survey of Coding, Multiplexing, and Equalization Techniques Used in Coherent Optical Fiber Communications

A Comparative Survey of Coding, Multiplexing, and Equalization Techniques Used in Coherent Optical Fiber Communications

A Vision of 6th Generation of Fixed Networks (F6G): Challenges and Proposed Directions

Silicon photonics for terabit/s communication in data centers and exascale computers

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