Optical fiber to strip waveguide interconnect

Details Optical fiber to strip waveguide interconnect Optical fiber to strip waveguide interconnect

1992-02-27

1993-05-04

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

385 46, 385 47, G02B 626

Patent

active

052088855

ABSTRACT:
This invention is directed toward joining, with glass, a waveguide supported by a substrate to an optical fiber. In a preferred embodiment, a glass material which melts at a temperature that is lower than the temperature to which the waveguide can be safely heated is applied to either the optical fiber and/or the waveguide. The glass material is then heated to cause it to connect the optical fiber to the waveguide. A feature of the invention is the presence of heat breaks in the substrate upon which the waveguide resides to thermally isolate the end of each waveguide and the underlying substrate from adjacent waveguides and the portions of the substrate which underlie said adjacent waveguides. The heat breaks restrict heat from being conducted along the end of the substrate from one waveguide region to adjacent waveguide regions when heat is being applied to make a connection.

REFERENCES:
patent: 4360248 (1982-11-01), Bickel et al.
patent: 4484794 (1984-11-01), Witte
patent: 4767174 (1988-08-01), Carenco et al.
patent: 4904042 (1990-02-01), Dragone
"Fiber Attachment for guided Wave Devices," E. J. Murphy, J. Lightwave Technology, vol. 6, No. 6, Jun. 1988.
"Efficient Multichannel Integrated Optics Star Coupler on Silicon"C. Dragone, et al., IEEE Photonics Tech. Lett., vol. 1, No. 8, Aug. 1989.
"Integrated Four-Channel Mach-Zehnder Multi/Demultiplexer Fabricated with Phosphorous Doped SiO.sub.2 Waveguides on Si".
B. H. Verbeek, et al., J. of Lightwave Tech., vol. 6, No. 6, Jun. 1988.

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