Silicon photonic waveguides for mid- and long-wave infrared region

  • Peng Yuan Yang
  • Stevan Stankovic
  • Jasna Crnjanski
  • Ee Jin Teo
  • David Thomson
  • Andrew A. Bettiol
  • Mark B. H. Breese
  • William Headley
  • Cristina Giusca
  • Graham T. Reed
  • Goran Z. Mashanovich
Article

Abstract

Silicon photonics is experiencing a dramatic increase in interest due to emerging application areas and several high profile successes in device and technology development (Liu et al Nature 427:615, 2004; Rong et al Nature 433:725, 2005; Almeida et al Nature 431:1081, 2004). Conventional waveguides in silicon photonics are designed for the telecom wavelengths. However, mid- and long-wave infrared regions are interesting for several application areas including sensing, communications, signal processing, missile detection and imaging (Soref et al J Opt A Pure Appl Opt 8:840, 2006). The most popular waveguide platform in silicon photonics is the Silicon-On-Insulator (SOI) structure, in the form of either a strip or a rib waveguide. This material structure, however, is not suitable for longer wavelengths (except in the 2.9–3.6 μm range) due to the absorption spectra of silicon dioxide (Soref et al J Opt A Pure Appl Opt 8:840, 2006). In this paper, we discuss the design and fabrication of two different waveguide structures, the freestanding (Yang et al Appl Phys Lett 90:241109, 2007) and hollow core waveguides (Stanković et al Proceedings of 51th Conference ETRAN, 2007). The former is suitable for long-wave infrared applications as it has an air cladding, whilst the latter is a candidate for sensing in the mid-wave infrared wavelength region.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Peng Yuan Yang
    • 1
  • Stevan Stankovic
    • 2
  • Jasna Crnjanski
    • 2
  • Ee Jin Teo
    • 3
  • David Thomson
    • 1
  • Andrew A. Bettiol
    • 3
  • Mark B. H. Breese
    • 3
  • William Headley
    • 1
  • Cristina Giusca
    • 1
  • Graham T. Reed
    • 1
  • Goran Z. Mashanovich
    • 1
  1. 1.Advanced Technology InstituteUniversity of SurreySurreyUK
  2. 2.Faculty of Electrical EngineeringUniversity of BelgradeBelgradeSerbia
  3. 3.Department of PhysicsNational University of SingaporeSingaporeSingapore

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