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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 15359–15376

Silicon-organic hybrid phase shifter based on a slot waveguide with a liquid-crystal cladding

Joerg Pfeifle, Luca Alloatti, Wolfgang Freude, Juerg Leuthold, and Christian Koos  »View Author Affiliations

Optics Express, Vol. 20, Issue 14, pp. 15359-15376 (2012)

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A highly efficient phase shifter based on the silicon-organic hybrid (SOH) platform is theoretically investigated and experimentally tested. The device consists of a silicon slot waveguide covered with an organic liquid-crystal (LC) cladding. A record-low voltage-length product of UπL = 0.085 Vmm can be achieved for high-purity materials where an optimum operation point can be set by a DC bias. With standard materials and without a DC bias, we measure a phase shift of 35π with a drive voltage of only 5 V for a 1.7 mm long device corresponding to a voltage-length product of UπL = 0.24 Vmm. The power dissipation is about six orders of magnitude smaller than that of state-of-the-art thermo-optic devices, thereby enabling dense integration of LC phase shifters in advanced photonic integrated circuits.

© 2012 OSA

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(230.7370) Optical devices : Waveguides
(250.5300) Optoelectronics : Photonic integrated circuits
(250.7360) Optoelectronics : Waveguide modulators

ToC Category:
Integrated Optics

Original Manuscript: April 25, 2012
Revised Manuscript: June 14, 2012
Manuscript Accepted: June 18, 2012
Published: June 25, 2012

Joerg Pfeifle, Luca Alloatti, Wolfgang Freude, Juerg Leuthold, and Christian Koos, "Silicon-organic hybrid phase shifter based on a slot waveguide with a liquid-crystal cladding," Opt. Express 20, 15359-15376 (2012)

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