Title :
Mode-field converters and long-period gratings fabricated by thermo-diffusion in nitrogen-doped silica-core fibers
Author :
Karpov, V.I. ; Grekov, M.V. ; Dianov, Evgeny M. ; Golant, K.M. ; Vasiliev, Sergey A. ; Medvedkov, Oleg I. ; Khrapko, R.R.
Author_Institution :
Gen. Phys. Inst., Acad. of Sci., Moscow, Russia
Abstract :
Summary form only given. Novel nitrogen-doped silica-core pure-silica-cladding fibers provide exceptional possibilities to achieve abrupt variations of the refractive-index profile by thermo-diffusion of nitrogen. A high diffusion coefficient of nitrogen in silica makes it possible to create deep changes in refractive index by means of short-time heat action on a fiber section with a length comparable to the fiber diameter. Thus, N-doped silica fibers are most appropriate for various fiber-optic devices produced by thermo-diffusion.
Keywords :
diffraction gratings; nitrogen; optical fibres; optical frequency conversion; refractive index; silicon compounds; thermal diffusion; SiO/sub 2/:N; abrupt variations; diffusion coefficient; fiber diameter; fiber-optic devices; long-period gratings; mode-field converters; refractive-index profile; short-time heat action; thermo-diffusion; Electron optics; Fiber gratings; Optical fiber devices; Optical fibers; Optical refraction; Optical sensors; Optical variables control; Silicon compounds; Stimulated emission; Temperature;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 1998. OFC '98., Technical Digest
Conference_Location :
San Jose, CA, USA
Print_ISBN :
1-55752-521-8
DOI :
10.1109/OFC.1998.657400
