P. Geittner | Researchain

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Journal of Lightwave Technology | 1986

PCVD at high deposition rates

P. Geittner; H.J. Hagemann; Jacques Warnier; H. Wilson

Optical preforms and fibers (both single mode and multimode) were prepared by PCVD at deposition rates up to 3.0 g/min. Excellently smooth index profiles and optical losses as low as those previously reported at 0.5 g/min have been obtained.

Journal of Lightwave Technology | 1988

Hybrid technology for large SM fiber performs

P. Geittner; H.-J. Hagemann; Hans-Jurgen Lydtin; Jacques Warnier

A hybrid technology for the preparation of standard and dispersion-modified single-mode (SM) fibers is discussed. Only the most important central region of the fibers is prepared by plasma chemical vapor deposition (PCVD) techniques. The optical cladding is as a high-purity jacket tube using the normal rod-in-tube obtained from low-cost shaping and sintering technologies. Due to in situ plasma etching, no disturbance is caused by the interfaces. Low attenuation is achieved with less than 5% of the fiber volume consisting of PCVD core region. The hybrid technology allows economic mass production of preforms containing more than 300 km of fiber. >

Archive | 1987