High-aperture optical waveguide structures, based on silica
glass, doped by fluorine, prepared in non-isothermal plasma of a
resonance local microwave low-pressure discharge
L. M. Blinov1, A. P. Gerasimenko3,
Yu. V. Gulyaev1, A. P. Dolgov3, L. Yu. Kochmarev2,
I.
P.
Shilov2
1
Kotel’nikov
Institute of Radio-engineering and Electronics of RAS
2
Kotel’nikov Institute of Radio-engineering and Electronics of RAS,
Fryazino Branch
3
"Radio engineering
institute of a name of the academician A.L. Mintz",
îpen
joint stock company
The paper is received on December 24,
2015
Abstract.
In this paper we presented
some results of a developed laboratory technology of high-aperture (~0,3) silica fiber preforms and planar waveguides with increased
aperture fabrication, which is based on PCVD method, where a microwave non-isothermal
plasma is used; material of a core is pure SiO2,
refracting cladding - F-doped SiO2. Such kind of fibers is used,
for example, in preparing of some optical elements in photonics, and high
sensitive optical fiber probes in laser medicine. In this work was
we used a microwave plasmatron of pass-through, waveguide-resonator type,
having the shortening capacity in the center of waveguide , and the
short-circuiting plunger at the end. It allows the effective resonance adjustment
on the H10n modes (n = 1, 2 …). Some properties of
produced preforms, optical fibers and planar waveguides are investigated.
Key words:
microwave plasma, microwave
plasmatron, resonance, high numerical aperture, optical fiber, optical planar
waveguide, splitter , silica glass layers, doped by fluorine.