High-efficient fiber-to-stripe waveguide coupler

Andrzej W. Domanski; Marcin Roszko; Marek Wojciech Sierakowski

doi:10.1117/12.24474

1 February 1991 High-efficient fiber-to-stripe waveguide coupler

Andrzej W. Domanski, Marcin Roszko, Marek Wojciech Sierakowski

Proceedings Volume 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications; (1991) https://doi.org/10.1117/12.24474
Event: Physical Concepts of Materials for Novel Optoelectronic Device Applications, 1990, Aachen, Germany

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

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Andrzej W. Domanski, Marcin Roszko, and Marek Wojciech Sierakowski "High-efficient fiber-to-stripe waveguide coupler", Proc. SPIE 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications, (1 February 1991); https://doi.org/10.1117/12.24474

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KEYWORDS

Waveguides

Optoelectronic devices

Fiber couplers

Physics

Waveguide modes

Glasses

Manufacturing

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