Power-efficient Triple-cladding Four-core Fiber Amplifier with Advanced Hybrid Pumping Technique
Abstract
We propose an advanced hybrid pumping (AHP) technique for multi-core fiber (MCF) amplifiers to improve power efficiency. Unlike conventional hybrid pumping that requires multiple single-mode pump lasers, AHP enables simultaneous core and cladding pumping using a single multimode pump laser. Numerical simulations and experiments confirm that AHP enhances both power conversion efficiency (PCE) and noise figure (NF) by increasing pump density in the cores. Using a triple-cladding four-core erbium-doped fiber, we achieved a PCE of 17.6% and an output signal power exceeding 400 mW per core. These results demonstrate the potential of AHP for energy-efficient MCF optical transmission systems.
Fields of Study & Subjects
Photonic Crystal and Fiber Optics
Optical Network Technologies
Advanced Power Amplifier Design
Publication details
- Journal / source
- Journal of Lightwave Technology
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Volume
- 44
- Issue
- 10
- Pages
- 4234–4241
- Publication date
- 25 February 2026