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Proceedings Paper

Design and realization of a novel polymer-based single-mode integrated optical beam splitter
Author(s): Sven Krueger; Hans-Dieter Bauer; Thomas Paatzsch; Anne Gaudron; Martin Popp; Ingo Smaglinski; Wolfgang Ehrfeld
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Paper Abstract

A novel design for a polymer-based singlemode beam splitter with a refractive index difference of (Delta) n equals 0.01 has been developed to grant the functionality at higher tolerances of (Delta) n(+/- 0.002). This was done by interpreting simulations carried out using the beam propagation method. For efficiently increasing the fiber to waveguide coupling a double-sinus s-bend taper could be identified for adapting the beam shapes of the standard singlemode fiber to the waveguide. Before splitting the beam is led through a 'rib mode stripper' which allows the suppression of higher modes and causes only a negligible disturbance of the fundamental model. For realizing this component, a number of commercially available polymers for optical waveguide components has been analyzed under the aspect of temperature stability of refractive indices. For that purpose a heatable Abbe refractometer has been used. Core and substrate materials are showing different thermal behaviors. Therefore, we could prove that for waveguide designs requiring the standard singlemode fiber refractive index difference of (Delta) n equals 0.004, the necessary stability of (Delta) n may only be achieved within a typical temperature interval of about 10K. Only one optical core material enabled a temperature range of about 95K, still somewhat below the requirements of the Bellcore- specifications.

Paper Details

Date Published: 22 August 2000
PDF: 11 pages
Proc. SPIE 4178, MOEMS and Miniaturized Systems, (22 August 2000); doi: 10.1117/12.396517
Show Author Affiliations
Sven Krueger, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Hans-Dieter Bauer, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Thomas Paatzsch, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Anne Gaudron, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Martin Popp, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Ingo Smaglinski, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Wolfgang Ehrfeld, Institut fuer Mikrotechnik Mainz GmbH (Germany)


Published in SPIE Proceedings Vol. 4178:
MOEMS and Miniaturized Systems
M. Edward Motamedi; Rolf Goering, Editor(s)

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