Fabrication and Characterization of a High-Gain Yb-Er Codoped Phosphate Glass Optical Amplifier

Table 1

Material and components.

Component	Value/description	Relevant parameters
Pump laser	1999CHP; (3SGroup); HI1060 fiber output	975.6 nm; 650 mW (max); ∅ 5.6 𝜇m/0.125 NA PM
Tunable laser	HP8168F	λ > 1500 nm; λ < 1600 nm
WDM	Go4fiber; WDM9890-250-A-1	Ports: 976–1090 nm; 26 dB isolation; Fiber Ø = 5.6 μm SM
Yb^3+/Er^3+ fiber	In-house developed phosphate glass fiber	Fiber ∅core = 7 μm; Fiber ∅innerclad = 25 μm; NA = 0.17
Collector pigtail		Fiber Ø = 9 μm (SM); Fiber ∅clad = 125 μm
OSA	Agilent 86140B	Max 30 dBm or; 23 dBm in 10 nm