Silicon-on-sapphire (SOS) waveguide modal analysis for mid-infrared applications

Mid infrared photonics is a very promising field with many applications in various areas. Silicon-on-sapphire (SOS) is one of the proposed platforms for this region. This paper present a novel and rigorous modal analysis of the SOS strip waveguide in the mid-infrared range from λ = 2 to 6 μm using finite element method solver. The analysis include fundamental and higher modes with both transverse-electric (TE) and transverse-magnetic (TM) polarization, where the dependence of these modes on the waveguide dimensions have been studied. Based on our modal analysis, a compact, wideband and easy to fabricate TE-pass and TM-pass integrated silicon waveguide polarizers have been designed. The different polarizer designs spans the whole mid-infrared transparency region of the SOS waveguide (λ = 2–6 μm). The TE-pass polarizer reaches 35.14 dB polarization extinction ratio while the TM-pass polarizer reaches 69.77 dB polarization extinction ratio with structure length of only 23 μm.

[1]  Aimin Wu,et al.  Fabrication and characterization of integrated three-dimensional linear taper on silicon-on-insulator , 2009 .

[2]  M. Nedeljkovic,et al.  Mid-infrared photonics devices in SOI , 2013, Photonics West - Optoelectronic Materials and Devices.

[3]  Andrzej Gajda,et al.  Tunable Bragg reflectors on silicon-on-insulator rib waveguides. , 2009, Optics express.

[4]  T. Baehr‐Jones,et al.  Silicon-on-sapphire integrated waveguides for the mid-infrared. , 2009, Optics express.

[5]  Pao Tai Lin,et al.  Mid-infrared materials and devices on a Si platform for optical sensing , 2014, Science and technology of advanced materials.

[6]  Largely-tunable wideband Bragg gratings fabricated on SOI rib waveguides employed by deep-RIE , 2007 .

[7]  Pierre Benech,et al.  Low-cost integrated optical waveguide polarizer with an hybrid structure of birefringent polymer and ion-exchanged glass waveguide , 1999, Photonics West.

[8]  Qian Wang,et al.  Ultracompact TM-Pass Silicon Nanophotonic Waveguide Polarizer and Design , 2010, IEEE Photonics Journal.

[9]  S. Tedjini,et al.  Integrated optical waveguide polarizer on glass with a birefringent polymer overlay , 1998, IEEE Photonics Technology Letters.

[10]  Y. Fainman,et al.  Compact and integrated TM-pass waveguide polarizer. , 2005, Optics express.

[11]  Y. Vlasov,et al.  Surface plasmon resonance monitoring by means of polarization state measurement in reflected light as the basis of a DNA-probe biosensor , 1996 .

[12]  Milan M. Milosevic,et al.  Silicon waveguides and devices for the mid-infrared , 2012 .

[13]  Yurii A. Vlasov,et al.  Mid-infrared optical parametric amplifier using silicon nanophotonic waveguides , 2010, 1001.1533.

[14]  Milos Nedeljkovic.  Silicon photonic modulators for the mid-infrared , 2013 .

[15]  R. Soref.  Mid-infrared photonics in silicon and germanium , 2010 .

[16]  Prem Pal,et al.  A New Model for the Etching Characteristics of Corners Formed by Si{111} Planes on Si{110} Wafer Surface , 2013 .

[17]  Federico Capasso,et al.  1.6W high wall plug efficiency, continuous-wave room temperature quantum cascade laser emitting at 4.6μm , 2008 .

[18]  Ultracompact TM-pass/TE-reflected integrated polarizer based on a hybrid plasmonic waveguide for silicon photonics , 2014, 11th International Conference on Group IV Photonics (GFP).

[19]  P. Liu,et al.  Study of form birefringence in waveguide devices using the semivectorial beam propagation method , 1991, IEEE Photonics Technology Letters.

[20]  Lucas Labadie,et al.  Mid-infrared guided optics: a perspective for astronomical instruments. , 2009, Optics express.

[21]  Rob Ilic,et al.  Silicon waveguides and ring resonators at 5.5 µm , 2010, 7th IEEE International Conference on Group IV Photonics.

[22]  Mohammad Mojahedi,et al.  Compact hybrid TM-pass polarizer for silicon-on-insulator platform. , 2011, Applied optics.

[23]  Mohamed A. Swillam,et al.  Dispersion engineering of silicon-on-sapphire (SOS) waveguides for mid-infrared applications , 2016, SPIE OPTO.

[24]  D. Edwards,et al.  Infrared refractive index of silicon. , 1980, Applied optics.