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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 32, Iss. 6 — Mar. 15, 2014
  • pp: 1048–1053

Oxide-free InP-on-Silicon-on-Insulator Nanopatterned Waveguides: Propagation Losses Assessment Through End-Fire and Internal Probe Measurements

C. Pang, H. Benisty, M. Besbes, X. Pommarede, and A. Talneau

Journal of Lightwave Technology, Vol. 32, Issue 6, pp. 1048-1053 (2014)


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Abstract

Directly bonded, oxide-free, InP-based epitaxial layer bonding onto nanopatterned silicon-on-insulator structures was performed and result in waveguides with an embedded effective medium. Such a medium ensures flexible form of optical confinement and could also assist heat and electric current transfer optimally to the silicon layer since there is a remarkable absence of oxide, thanks to careful surface preparation processes. The fabricated waveguides, which embed buried 1-D (trenches) or 2-D (holes forming a photonic crystal) nanopatterns have been measured by two techniques. Either the classical end-fire technique, or the “internal light source” technique used for III–V-based photonic crystal waveguides, with a layer that contains several quantum wells. Propagation losses due to scattering in the nanopatterned area are retrieved by both methods and consistently point toward a ∼20 cm $^{-1}$ loss level. A critical assessment is made of this result. Other local probe techniques allowed by the internal probe methods are reported that could help qualifying thermal transfer at these oxide-free interfaces.

© 2013 IEEE

Citation
C. Pang, H. Benisty, M. Besbes, X. Pommarede, and A. Talneau, "Oxide-free InP-on-Silicon-on-Insulator Nanopatterned Waveguides: Propagation Losses Assessment Through End-Fire and Internal Probe Measurements," J. Lightwave Technol. 32, 1048-1053 (2014)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-32-6-1048

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