# Energy-Efficient Transponder Configuration for FMF-based Elastic Optical Networks

## TL;DR

This paper introduces a convex optimization approach for energy-efficient transponder configuration in FMF-based elastic optical networks, significantly reducing power consumption while ensuring quality of service.

## Contribution

It presents a novel convex formulation for joint optimization of transponder parameters, improving speed and energy efficiency over traditional methods.

## Key findings

- Convex formulation is faster than mixed-integer nonlinear methods.
- Power consumption reduced by up to 32%.
- Mode coupling and available modes impact power consumption.

## Abstract

We propose an energy-efficient procedure for transponder configuration in FMF-based elastic optical networks in which quality of service and physical constraints are guaranteed and joint optimization of transmit optical power, temporal, spatial and spectral variables are addressed. We use geometric convexification techniques to provide convex representations for quality of service, transponder power consumption and transponder configuration problem. Simulation results show that our convex formulation is considerably faster than its mixed-integer nonlinear counterpart and its ability to optimize transmit optical power reduces total transponder power consumption up to 32%. We also analyze the effect of mode coupling and number of available modes on power consumption of different network elements.