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Proceedings Paper

Single mode field analysis and adjustment on polymer waveguides understanding the reasons for coupling losses
Author(s): Uwe Hollenbach; Hans-Jürgen Boehm; Jürgen Mohr; K. Pfeiffer
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Paper Abstract

Integrated optic single mode waveguides in polymer substrates are of interest for several applications especially in the visible wavelength range e.g. to build waveguide components for biophotonic, sensors or passive splitters. The manufacturing process contains DUV or UV lithography and some different pre or post exposure bakes depending on the used type of polymer. Chromium masks offer facile and controllable processing and rapid exposure times. Surface waveguides can be covered with an index matched cladding substrate on top to get buried light guiding. The end faces and also the over all thickness of about 1 mm of the component packages gives the possibility for a stable coupling between fiber arrays and planar waveguide substrates. The paper describes the results of a single mode field analysis and the experimental adjustment of polymer waveguides for wavelengths within the visible range of light to achieve low coupling losses. Some different manufacturing process steps are compared depending on the used polymer material. A comparison between the measured waveguides and fiber mode near field diameters and the nominal calculated numerical apertures are presented. The different insertion loss is measured and illustrated as well.

Paper Details

Date Published: 15 May 2008
PDF: 10 pages
Proc. SPIE 6992, Micro-Optics 2008, 69920Y (15 May 2008); doi: 10.1117/12.782076
Show Author Affiliations
Uwe Hollenbach, Forschungszentrum Karlsruhe GmbH (Germany)
Hans-Jürgen Boehm, Forschungszentrum Karlsruhe GmbH (Germany)
Jürgen Mohr, Forschungszentrum Karlsruhe GmbH (Germany)
K. Pfeiffer, Micro Resist Technology GmbH (Germany)

Published in SPIE Proceedings Vol. 6992:
Micro-Optics 2008
Hugo Thienpont; Peter Van Daele; Jürgen Mohr; Mohammad R. Taghizadeh, Editor(s)

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