The development of low loss, high silica optical fibers over the last few years has required the development of high temperature heat sources, over 2000°C, for the drawing of the fiber. Of the possible heat sources the oxy- hydrogen torch, the CO2 laser and a few furnaces have been employed for drawing the high silica fibers. The torch method, while inexpensive, possesses control and contamination difficulties. High temperature furnaces provide high thermal inertia, high stability, and radially symmetric heating. Most furnaces, however, possess graphite or metallic heating elements which requires flowing protective atmospheres during operation and as a result have limited element life and show some degree of contamination in the furnace atmosphere. The CO2 laser provides the cleanest drawing atmosphere, but requires unique optical designs to radially distribute the energy for drawing and they are limited in power.

© 1977 Optical Society of America

PDF Article
More Like This
Dual-wall zirconia induction furnace for the production of high-strength silica fibers

TuE2 Optical Fiber Communication Conference (OFC) 1986

Physical Behavior Of The Neck-Down Region During The Furnace Drawing Of Silica Fibers

U. C. Paek and R. B. Runk
TuC1 Optical Fiber Transmission (OFTran) 1977

Drawing Of Smooth Optical Fibers

M. I. Cohen and R. J. Klaiber
TuB4 Optical Fiber Transmission (OFTran) 1977