Laser nibbling of optical waveguides

Details Laser nibbling of optical waveguides Laser nibbling of optical waveguides

1985-04-08

1987-12-01

Paschall, M. H.

Electric heating

Metal heating

By arc

219121LG, 219121LM, 219121LA, 350 961, 350 9615, 65 2, B23K 2600

Patent

active

047106050

ABSTRACT:
A fused silica glass optical fiber 10 is machined by a pulsed infrared laser beam 20 from a carbon dioxide laser 22 focussed by a germanium lens 24. The beam has a power density of about 70,000 watts per square centimeter at the focussed machining region b and is pulsed at about one pulse per second with a one-half second pulse duration. The fiber workpiece edge is gradually brought into the beam from the side to result in progressive flash evaporation.

REFERENCES:
patent: 3469076 (1969-09-01), Saslawsky
patent: 4147402 (1979-04-01), Chown
patent: 4170726 (1979-10-01), Okuda
patent: 4356376 (1982-10-01), Komanduri et al.
patent: 4441008 (1984-04-01), Chan
patent: 4473735 (1984-09-01), Steffen
"Laser Processing and Analysis of Materials", Plenum Press, New York, W. W. Duley, 1983, Chapter 2, pp. 171-172.
"Laser Welding and Drilling", Society of Photo-Optical Instrumentation Engineers, C. M. Sharp, Oct. 10-13, 1978, vol. 164, C. M. Sharp, pp. 271-278.
"Multimode Optical Fibers with Noncircular Cross Section", Radio Science, M. Brenci, P. F. Checcacci, R. Falciai, A. M. Scheggi, Jul.-Aug. 1981, pp. 535-540.

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