FWM in silicon nanocrystal-based sandwiched slot waveguides

Abstract The observation of four-wave mixing in a 6 mm long sandwiched slot waveguide filled with Si-nc/SiO 2 is reported for optical powers usually employed in telecommunication systems. A −47 dB conversion efficiency is measured in fabricated waveguides for input signal powers around 12 dBm on chip and a waveguide length of 6 mm. Furthermore, the calculated non-linear coefficient is found to be n 2  = 2.67 × 10 −17  m 2 /W. It is also expected that, by using longer waveguides, it would be possible to achieve wavelength conversion.

[1]  A. Martinez,et al.  Design of Silicon-Based Slot Waveguide Configurations for Optimum Nonlinear Performance , 2007, Journal of Lightwave Technology.

[2]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

[3]  T. Tsuchizawa,et al.  Four-wave mixing in silicon wire waveguides. , 2005, Optics express.

[4]  I. Day,et al.  Optical dispersion, two-photon absorption and self-phase modulation in silicon waveguides at 1.5 μm wavelength , 2002 .

[5]  M. Paniccia,et al.  A high-speed silicon optical modulator based on a metal–oxide–semiconductor capacitor , 2004, Nature.

[6]  Y. Vlasov,et al.  Raman amplification in ultrasmall silicon-on-insulator wire waveguides. , 2004, Optics express.

[7]  P. Zory,et al.  Contact reflectivity effects on thin p-clad InGaAs single quantum-well lasers , 1994, IEEE Photonics Technology Letters.

[8]  Y. Vlasov,et al.  C-band wavelength conversion in silicon photonic wire waveguides. , 2005, Optics express.

[9]  C Koos,et al.  Nonlinear silicon-on-insulator waveguides for all-optical signal processing. , 2007, Optics express.

[10]  M. Paniccia,et al.  A continuous-wave Raman silicon laser , 2005, Nature.

[11]  Qianfan Xu,et al.  Guiding and confining light in void nanostructure. , 2004, Optics letters.

[12]  S. Chi,et al.  Phase conjugation by four-wave mixing in single-mode fibers , 1994 .

[13]  B. Garrido,et al.  Linear and nonlinear optical properties of Si nanocrystals in SiO2 deposited by plasma-enhanced chemical-vapor deposition , 2008 .

[14]  L. D. Negro,et al.  Optical gain in silicon nanocrystals , 2000, Nature.

[15]  Alexander Fang,et al.  An all-silicon Raman laser , 2005, Nature.

[16]  L Ferraioli,et al.  Bound electronic and free carrier nonlinearities in Silicon nanocrystals at 1550nm. , 2009, Optics express.

[17]  B Jalali,et al.  Anti-Stokes Raman conversion in silicon waveguides. , 2003, Optics express.

[18]  Mihaela Dinu,et al.  Third-order nonlinearities in silicon at telecom wavelengths , 2003 .

[19]  H. Driel,et al.  Two-photon absorption and Kerr coefficients of silicon for 850–2200nm , 2007 .