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  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper CK_10_6

Integrated Polymer Microlenses for Two-dimensional Collimation of Light from Single-mode Optical Waveguides

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Abstract

In many applications, such as on-chip optical coherence tomography (OCT) or Raman spectroscopy, it is necessary to produce a collimated light beam from an optical waveguide, and collimation in one dimension has been demonstrated, see e.g. [1,2,3]. However, in order to increase the efficiency of chip-sample coupling, collimation in two dimensions is required [4,5]. In this work, we demonstrate an on-chip reflowed polymer microlens design to enable light collimation in both, horizontal and vertical directions, and the experimental results show reduction of the divergence angle by a factor of 25.

© 2013 IEEE

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