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Optical Engineering

Source misalignment in multimode polymer tapered waveguides for optical backplanes
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Paper Abstract

Polymer tapered multimode waveguides were modeled using the finite difference wide-angle beam propagation method to investigate whether tapered input waveguide couplers decreasing in width away from the waveguide entrance give improved tolerance to lateral misalignments of an optical source compared to straight waveguides and whether there is any effect on angular misalignment tolerance for use in optical backplane interconnections. Input tapered couplers having a larger entrance and tapering down in width do indeed improve the lateral misalignment tolerance compared to straight waveguides but do so at the expense of an increased loss. Tapers have no effect on angular tolerance for strongly driven vertical cavity surface-emitting laser (VCSEL) sources although they cause a loss of angular tolerance for single-mode fiber sources and VCSELs at low drive currents.

Paper Details

Date Published: 1 January 2007
PDF: 7 pages
Opt. Eng. 46(1) 015401 doi: 10.1117/1.2432875
Published in: Optical Engineering Volume 46, Issue 1
Show Author Affiliations
Atef M. Rashed, Univ. College London (United Kingdom)
David R. Selviah, Univ. College London (United Kingdom)

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