Laser beam joining of optical fibers in silicon-V-grooves
Kaufmann S, Otto A, Luz G (2000)
Publication Type: Conference contribution
Publication year: 2000
Journal
Publisher: SPIE
Book Volume: 3933
Pages Range: 371-378
Conference Proceedings Title: Laser Applications in Microelectronic and Optoelectronic Manufacturing V, Proceedings of SPIE
Event location: Bellingham, USA
Abstract
The increasing use of optical data transmission systems and the development of new optical components require adjustment- insensitive and reliable joining and assembling techniques. The state of the art includes the utilization of silicon submounts with anisotropically etched V-grooves. Several glass fibers are fixed in these V-grooves with adhesive. Adhesive bonds tend towards degradation under the influence of temperature and moisture. For this reason, the alternative joining processes laser beam welding and laser beam soldering are relevant. The goal is a reliable joining of optical fibers in V-grooves without damage to the fibers or the silicon submount. Because of the anomaly of silicon during phase transformation, a positive joining can be realized by laser beam welding. A melt pool is created through the energy of a Nd:YAG-laser pulse. During solidification, the volume of silicon increases and a bump is formed in the center. Experiments have shown that this phenomenon can be used for joining optical fibers in silicon-V-grooves. With suitable parameters the silicon flows half around the fiber during solidification. For each fiber, several welding points are necessary. Another promising joining method is laser beam soldering. In this case, a second silicon sheet with a solder deposit is placed on the fibers which lie in the V-grooves of the metalized silicon submount. The laser heats the upper silicon until the solder melts by heat conduction.
Additional Organisation(s)
Involved external institutions
Austria (AT)How to cite
APA:
Kaufmann, S., Otto, A., & Luz, G. (2000). Laser beam joining of optical fibers in silicon-V-grooves. In Helvajian, H. (Eds.), Laser Applications in Microelectronic and Optoelectronic Manufacturing V, Proceedings of SPIE (pp. 371-378). Bellingham, USA: SPIE.
MLA:
Kaufmann, Stefan, Andreas Otto, and G. Luz. "Laser beam joining of optical fibers in silicon-V-grooves." Proceedings of the Laser Applications in Microelectronic and Optoelectronic Manufacturing V, Proceedings of SPIE, Bellingham, USA Ed. Helvajian, H., SPIE, 2000. 371-378.
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