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Proceedings Paper

High-efficient fiber-to-stripe waveguide coupler
Author(s): Andrzej W. Domanski; Marcin Roszko; Marek Wojciech Sierakowski
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Paper Abstract

Some improvement of technology making the coupling of a fiber to a stripe waveguide more simple and effective is presented. The improvement consists in additional reprocessing of the edgeadjacent area of a substrate slab with a fabricated stripe waveguide. The mentioned area is subjected to a proton exchange process with simultanous drawingup of the slab from meltAfter a supplement process in the edge adjacent area the waveguide has a form of a horn with convergency depending on the mask pattern velocity and the melt temperatureAt the entrance face of the slab the channel takes a form of a rectangle of sizes of about tens micrometers wide and up to a few micrometers deep. The coupling of a fiber to an enlarged channel waveguide has been efficiently simplified and the coupling power is not so sensitive to the offaxial and tilt deflection of the fiber. L Interconnection of QjiCa1 wavides In most integrated optics devices a light beam is guided in a stripe waveguide of a required configuration. Low power electrooptical modulation forces decrease of the waveguide width. In photo-and electronolitography processing the stripes of width up to 2 pm have been manufactured1''2. The depth of about 0. 5 im is required for guiding of one mode. Long distance transmission realize fibers. Geometrical crosssection of the both fiber and stripe differ in size and form espe cially for multimode waveguides and the

Paper Details

Date Published: 1 February 1991
PDF: 9 pages
Proc. SPIE 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications, (1 February 1991); doi: 10.1117/12.24474
Show Author Affiliations
Andrzej W. Domanski, Warsaw Univ. of Technology (Poland)
Marcin Roszko, Warsaw Univ. of Technology (Poland)
Marek Wojciech Sierakowski, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 1362:
Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications
Manijeh Razeghi, Editor(s)

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