Arc fusion splicing effects in large-mode-area single-mode ytterbium-doped fibers.
For the first time the effects of arc fusion splicing on the residual stress and refractive index of large-mode-area single-mode ytterbium-doped fibers (YDFs) are investigated using a state-of-the-art three-dimensional concurrent stress-index measurement method. The results, based on a commercially available fiber, describe a host of perturbations that decrease the core/cladding refractive index difference by as much as 1.74 × 10(-3) over an axial length of many hundreds of wavelengths. Simulations indicate that these perturbations result in an expansion of the mode-field-diameter by 39.6% and, based on the measured sample, result in an extra splice loss of 20.8%. The results of this investigation will be useful in the design and optimization of high-power all-fiber YDF lasers and amplifiers.
Ting
T
Feng
Micah H
MH
Jenkins
Fengping
F
Yan
Thomas K
TK
Gaylord
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods*; D006358:Hot Temperature; D008027:Light; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D012542:Scattering, Radiation; D013314:Stress, Mechanical; D014896:Welding / Q000295:instrumentation* / Q000379:methods*; D015018:Ytterbium / Q000737:chemistry*
D015018:Ytterbium