C+ L open line systems represent a cost-effective way to scale backbone network capacity.
In this article, we review challenges and opportunities for C+ L line systems stemming from …

We report the first experimental realization and detailed characterization of thulium doped
fiber amplifiers (TDFAs) specifically designed for optical communications providing high …

The first demonstration of a hollow core photonic bandgap fiber (HC-PBGF) suitable for high-
rate data transmission in the 2 µm waveband is presented. The fiber has a record low loss …

A source of pulses of coherent radiation at a wavelength of approximately 1 μm, comprises a
pump source for producing pump light, a laser cavity comprising an Yb 3+-doped gain …

The gain bandwidth of the erbium-doped fiber amplifier limits the enhancement of the
transmission capacity in optical fiber communication systems. This Letter reports an erbium …

An improvement of gain in the long-wavelength band (L-band) is observed by double
passing the forward amplified spontaneous emission and signal in the erbium-doped fiber …

By controlling the output coupling ratio, we demonstrate a novel wavelength-tunable L-band
Erbium-doped fiber laser (EDFL) with a maximum tuning range up to 58 nm (from 1567 to …

A new double-pass long wavelength band erbium-doped fiber amplifier with enhanced
noise figure characteristics is demonstrated by adding a short length of forward pumped …

Semiconductor pump lasers are an important component in erbium-doped fiber amplifiers
and Raman amplifiers. Thermal management has become one of the major obstacles of …

The internet heavily relies on optical networks to carry an increasingly growing amount of
traffic. This paper analyzes and explores different ways and architectures to efficiently scale …