Quantify launch-power-dependent transceiver power consumption

Quantify the wavelength-dependent and signal-quality-dependent transceiver power-consumption parameters—including laser, chromatic-dispersion-compensation, digital-signal-processing, and forward-error-correction contributions—in coherent optical fibre communication links.

Background

The energy-per-bit model assumes that transceiver power consumption is independent of launch power. The paper notes that this assumption neglects wavelength dependence in transceiver subsystems and signal-quality dependence in digital signal processing, including forward-error correction. These parameters depend on the transceiver material platform, DSP architecture, and laser technology, and their absence from the literature limits the completeness of the energy-efficiency model.

References

This assumption neglects the wavelength-dependence of the transceiver subsystems (e.g. the laser, the chromatic dispersion compensation block) as well as the signal-quality-dependence of the DSP (including the FEC), but determination of these parameters is complex and depends on the transceiver material platform, DSP architecture and laser technology, and have not been quantified in literature.

— Energy-Efficient Hollow-Core Fibre Transmission  (2609.20383 - Sohanpal et al., 17 Sep 2026) in Section 2, “Modelling Energy-per-bit”