All-optical wavelength conversion for 10 Gb/s DPSK signals in a silicon ring resonator

Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, NSW 2006, Australia.
Optics Express (Impact Factor: 3.53). 11/2011; 19(23):22410-6. DOI: 10.1364/OE.19.022410
Source: PubMed

ABSTRACT We demonstrate all-optical wavelength conversion at 10 Gb/s for differential phase-shift keyed (DPSK) data signals in the C-band, based on four-wave mixing (FWM) in a silicon ring resonator. Error-free operation with a system penalty of ~4.1 dB at 10⁻⁹ BER is achieved.


Available from: DanXia Xu, Jan 08, 2014
  • [Show abstract] [Hide abstract]
    ABSTRACT: A 1 by 4 wavelength division multiplexer with 0.5nm bandwidth and no free spectral range limitation is demonstrated on silicon. The device utilizes wide bandwidth filters cascaded with ring resonators in order to select specific ring resonator modes and route each resonant mode to a separate port. This technology will enable dense wavelength division multiplexing covering the C - and L - bands with up to 100 10GB/s channels separated by 100GHz to be implemented for optical interconnects applications. A 1 by 4 wavelength division multiplexer with 3dB channel bandwidths as small as 0.5nm and 1dB insertion loss are demonstrated with 16dB inter-channel crosstalk suppression. A second wavelength division multiplexer scheme with four channels, each spaced 0.5nm apart without any free spectral range limitations is also demonstrated using wide bandwidth filters centered at the same wavelength to select resonances from four different ring resonators with slightly different widths.
    Optics Express 04/2014; 22(9). DOI:10.1364/OE.22.010408 · 3.53 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: An efficient and broadband parametric wavelength converter is proposed in the silicon-on-insulator (SOI) waveguide without dispersion engineering. The vertical grating is utilized to achieve the quasi-phase-matching (QPM) of four-wave mixing (FWM). By alternating the phase-mismatch between two values with opposite signs, the parametric attenuation is suppressed. The conversion efficiency at the designated signal wavelength is significantly improved, and the 3-dB conversion bandwidth is also extended effectively. It is demonstrated that the conversion bandwidth is insensitive to both the propagation length and the grating width, which alleviates the tradeoff between the conversion bandwidth and the peak conversion efficiency. For a continuous-wave (CW) pump at 1550 nm, a conversion bandwidth of 331 nm and a peak efficiency of -12.8 dB can be realized in a 1.5-cm-long grating with serious phase-mismatch.
    Optics Express 03/2014; 22(6):6257-68. DOI:10.1364/OE.22.006257 · 3.53 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: An all-pass microring resonator is utilized in silicon waveguides to adjust the relative phase relationship among the involved waves in the degenerated four-wave mixing (FWM). By using the microring resonator as a phase shifter, the phase matching can be ameliorated, and the conversion efficiency can be enhanced effectively. The influences of key factors including the coupling strength of the ring resonator, and the nonlinear loss introduced by two-photon absorption and free carrier absorption, on the improvement of conversion efficiency are discussed. By properly selecting the parameters, the spectra of conversion efficiency are flattened in the wavelength range of 10 nm. Since the ring resonator has a periodic response spectrum and tunable resonant wavelength, the FWM with a microring phase shifter provides an efficient approach to wavelength conversion in silicon waveguides.
    Journal of the Optical Society of America B 09/2013; 30(9). DOI:10.1364/JOSAB.30.002491 · 1.81 Impact Factor