Single-Mode Fiber SDM Submarine Systems

Bolshtyansky, Maxim; Vusirikala, Vijay; Sinkin, O. V.; Paskov, Milen; Hu, Yue; Cantono, Mattia; Jovanovski, Ljupco; Pilipetskii, A.N.; Mohs, G.; Kamalov, Valey

doi:10.1109/jlt.2019.2957725

Cited by 42 publications

(17 citation statements)

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“…Without losing generality, we assume the same configuration for repeater E/O efficiency analysis. Pump sharing technology combines a group of pump lasers to f eed a group of fiber pairs, via a coupler network [3,6]. We consider single mode fiber SDM systems, or SDM1 [3], with one EDFA per fiber.…”

Section: Repeater Power Conversion Modelmentioning

confidence: 99%

“…The overall data capacity of trans-oceanic submarine systems is typically limited by the electrical power supply [1][2][3][4][5][6], up to ~15-18 kW, beyond which reliability becomes a signif icant issue. The power is mainly dissipated by the cable conductor and repeaters, with equal power split in an ideal case.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the logarithmic dependence of data capacity on signal-to -noise ratio, it is generally benef icial to split optical power into parallel channels to achieve higher cable capacity in power limited systems. Therefore, such SDM designs can signif icantly improve the metric of total cable capacity per unit power [1,2,6,[8][9][10][11][12][13][14][15][16]. An important and related concept is pump farming or p ump sharing, used in SDM systems to provide pump power to multiple amplifiers f rom a group of pump lasers [3].…”

Section: Introductionmentioning

confidence: 99%

“…SDM realization includes parallel single mode fiber systems, multi-core fiber systems, and multimode systems. In this paper, we consider signal mode fiber SDM systems, ref erred to as SDM1 in Ref [3,6]. As compared to conventional submarine systems, repeater E/O efficiency of SDM systems with pump sharing becomes more complicated depending on multiple system design variables such as the number of pumps, the number of fiber pairs, and channel launch power.…”

Section: Introductionmentioning

confidence: 99%

“…It is therefore important to investigate the repeater power conversion efficiency in SDM systems with pump sharing for accurate estimation of cable capacity. In the absence of a detailed model of repeater E/O efficiency, cable capacity per power of SDM syst ems was analyzed indirectly in terms of pump optical power or EDFA optical power [6,17].…”

Section: Introductionmentioning

confidence: 99%

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Repeater Power Conversion Efficiency in Submarine Optical Communication Systems

2021

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In power-limited trans-oceanic submarine systems, the electrical-to-optical (E/O) power conversion efficiency determines the amount of optical signal power generated by repeaters, which governs the cable capacity. In contrast to conventional submarine systems, recent single mode fiber spatial division multiplexing (SDM) systems operate at a lower channel power and support a larger number of optical fibers. Moreover, pump sharing technology is used in SDM systems to enhance cable capacity and system reliability, where a group of pump lasers are combined to feed a group of fiber pairs. The repeater E/O power conversion efficiency is directly related with cable capacity, as well as capacity per power and cost per capacity analysis. Therefore, it is important to understand the characteristics of repeater E/O efficiency. We developed a model to analyze the repeater E/O efficiency in submarine SDM systems. Experimental measurement data of pump lasers and numerical simulation results of Erbium doped fiber amplifiers (EDFAs) were used as input information to the model to analyze repeater E/O efficiency in vario us system designs. Based on the E/O efficiency model results, we investigated cable capacity using the Gaussian noise (GN) model. Moreove r, cable capacity per power was calculated and compared based on three different power metrics: (i) electrical supply power, (ii) pump optical power and (iii) EDFA output power. With the ai d of the repeater E/O efficiency model, one can analyze the efficiency of submarine systems using the direct metric of cable capacity per electrical supply power.

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Section: Repeater Power Conversion Modelmentioning

confidence: 99%