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Ultra-Wideband Transmission Systems From an Energy Perspective: Which Band is Next?

Ronit Sohanpal, Mindaugus Jarmolovicius, Jiaqian Yang, Eric Sillekens, Romulo Aparecido, Vitaly Mikhailov, Jiawei Luo, David J. DiGiovanni, Ruben S. Luis, Hideaki Furukawa, Robert I. Killey, Polina Bayvel

TL;DR

The paper addresses the challenge of extending optical bandwidth beyond C/L bands while managing energy-per-bit. It combines measured PCE data for state-of-the-art doped-fiber amplifiers with an integral Gaussian-noise model and launch-power optimization to quantify throughput versus energy-per-bit for many band combinations. Key results show that OESCL systems can deliver approximately 2.98 times higher throughput than CL-only systems at 1000 km, at the cost of a 48% higher energy-per-bit. The findings also reveal that transceiver power consumption can dominate energy-per-bit and influence band deployment order, and that low-loss fibre significantly enhances OESCL energy efficiency, providing guidance for energy-aware wideband long-haul optical networks.

Abstract

Measuring the power efficiency of the state-of-the-art OESCL-band amplifiers, we show that 1000 km OESCL-band systems can achieve 2.98x greater throughput for +48% higher energy-per-bit compared to CL-band transmission only.

Ultra-Wideband Transmission Systems From an Energy Perspective: Which Band is Next?

TL;DR

The paper addresses the challenge of extending optical bandwidth beyond C/L bands while managing energy-per-bit. It combines measured PCE data for state-of-the-art doped-fiber amplifiers with an integral Gaussian-noise model and launch-power optimization to quantify throughput versus energy-per-bit for many band combinations. Key results show that OESCL systems can deliver approximately 2.98 times higher throughput than CL-only systems at 1000 km, at the cost of a 48% higher energy-per-bit. The findings also reveal that transceiver power consumption can dominate energy-per-bit and influence band deployment order, and that low-loss fibre significantly enhances OESCL energy efficiency, providing guidance for energy-aware wideband long-haul optical networks.

Abstract

Measuring the power efficiency of the state-of-the-art OESCL-band amplifiers, we show that 1000 km OESCL-band systems can achieve 2.98x greater throughput for +48% higher energy-per-bit compared to CL-band transmission only.
Paper Structure (4 sections, 3 figures)

This paper contains 4 sections, 3 figures.

Table of Contents

  1. Introduction
  2. OESCL amplification power efficiency measurements
  3. Results and discussion
  4. Conclusion

Figures (3)

  • Figure 1: (a) Measured wallplug PCE for various doped-fibre amplifiers. (b) Attenuation profiles used in the integral GN model.
  • Figure 2: Amplification energy per bit versus throughput for all 31 optimised OESCL-band combinations using (a) Fibre A and (b) Fibre B for 3 spans (240 km). Dotted lines show regions of fixed amplifier power consumption.
  • Figure 3: Energy per bit versus throughput using Fibre B for 13 spans (1040 km) for (a) amplifier power consumption only and (b) both amplifier and transceiver. Dotted lines show regions of fixed amplifier power consumption.