Paper
22 March 2013 Fundamental mode evolution in long, large-core (>100 μm) adiabatic tapers
Juho Kerttula, Valery Filippov, Yuri Chamorovskii, Vasily Ustimchik, Oleg G. Okhotnikov
Author Affiliations +
Abstract
We have experimentally investigated fundamental mode propagation in few-meter-long adiabatic step-index tapers with high numerical aperture, core diameter up to 117μm (V=38), and tapering ratio up to 18. We confirmed single fundamental mode guiding in tapers with uniform core index profile by several experiments. We observed an annular near field distribution and degraded beam quality for large output core diameters, found to occur due to intrinsic mechanical stress in the fibers. We expect that eliminating the stress would prevent the mode deformation and allow constructing single-mode, diffraction-limited tapered large-mode-area amplifiers with a good beam shape.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juho Kerttula, Valery Filippov, Yuri Chamorovskii, Vasily Ustimchik, and Oleg G. Okhotnikov "Fundamental mode evolution in long, large-core (>100 μm) adiabatic tapers", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 860121 (22 March 2013); https://doi.org/10.1117/12.2001249
Lens.org Logo
CITATIONS
Cited by 2 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Optical fibers

Cladding

Near field

Multimode fibers

Refractive index

Single mode fibers

Polarization

Back to Top