Brief Communications

Quartz glass optical fibers with radial variations of the boron and phosphorus concentrations

M. I. Botvinkin, V. V. Grigor'yants, M. E. Zhabotinskii, V. N. Isakov, G. A. Ivanov, N. A. Koreneva, S. V. Shreĭber, S. V. Shгeiber, Yu. K. Chamorovskiĭ


Abstract: Low-loss optical fibers were prepared as follows. Halide vapors were oxidized inside a quartz jacket tube placed in a traveling hot zone. The tube was then collapsed into a rod blank and fibers were drawn. The deposited halide films were doped with boron and phosphorus in accordance with a selected program. The losses in a "gradient" fiber of this kind were 4 dB/km at λ = 0.85 μ and the numerical aperture was 0.22.

UDC: 535.813

PACS: 42.80.Mv

Received: 22.06.1976

 English version: Soviet Journal of Quantum Electronics, 1976, 6:10, 1260–1261