Title :
Heat dissipation in kilowatt fiber power amplifiers
Author_Institution :
Dept. of Eng. Phys., McMaster Univ., Hamilton, Ont., Canada
fDate :
6/1/2004 12:00:00 AM
Abstract :
The heat dissipation and output power characteristics of kilowatt ytterbium-doped double-clad (YDDC) fiber power amplifiers are investigated through numerical modeling. Solutions to facilitate heat dissipation and reduce operating temperature in YDDC fibers under bi-directional end pump and distributed pump are presented and compared. It is shown that the heat dissipation issue in kilowatt fiber power amplifiers can be effectively solved by optimizing the arrangement of pump powers, pump absorption coefficients, and fiber lengths.
Keywords :
cooling; optical fibre amplifiers; power amplifiers; ytterbium; Yb; bidirectional end pump; diode-pumped rare-earth-doped single-mode fiber laser sources; distributed pump; fiber length; heat dissipation; kilowatt fiber power amplifiers; kilowatt ytterbium-doped double-clad fiber power amplifiers; pump absorption coefficients; Brillouin scattering; Fiber lasers; Heat pumps; Optical fiber amplifiers; Optical fiber polarization; Power amplifiers; Power generation; Power lasers; Pump lasers; Thermal stresses; Double-clad; fiber power amplifier; heat dissipation; thermal effects; ytterbium-doped;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.828271
