Highly ytterbium-doped bismuth-oxide-based fiber

Area of Science:

• Materials Science
• Optoelectronics
• Glass Science

Background:

• Bismuth-oxide-based glasses are promising host materials for rare-earth doping.
• High ytterbium (Yb) doping concentrations are desirable for advanced optical applications.
• Thermal stability is crucial for high-performance fiber lasers.

Purpose of the Study:

• To investigate the properties of thermally stable, highly ytterbium-doped bismuth-oxide-based glasses.
• To fabricate and characterize ytterbium-doped bismuth-oxide-based fibers.
• To demonstrate a fiber laser utilizing these doped glasses.

Main Methods:

• Synthesis and characterization of ytterbium-doped bismuth-oxide glasses with varying Yb(2)O(3) concentrations.
• Fabrication of optical fibers from the developed glass materials.
• Experimental setup for fiber laser demonstration and performance evaluation.

Main Results:

• Absorbance increased linearly with Yb(2)O(3) concentration, reaching 7800 dB/m at 3 mol-%.
• Fabricated ytterbium-doped bismuth-oxide-based fiber exhibited low loss (0.24 dB/m).
• Demonstrated fiber laser achieved a slope efficiency of 36%.

Conclusions:

• Highly ytterbium-doped bismuth-oxide glasses offer excellent optical properties for fiber laser applications.
• The fabricated fibers maintain low loss, suitable for signal transmission.
• The demonstrated fiber laser performance highlights the potential of these materials in photonics.