Phase sensitive amplification in a highly nonlinear lead-silicate fibre

We experimentally demonstrate phase-sensitive amplification in a highly nonlinear lead-silicate W-type fibre. A phase-sensitive gain swing of 6dB was observed in a 1.56m sample of the fibre for a total launched power of 33dBm

Advanced nonlinear signal processing in silicon-based waveguides

This talk presents recent progress in optical signal processing based on compact waveguides fabricated mainly using silicon germanium alloys. Applications include supercontinuum generation, wavelength conversion and signal regeneration

Silicon germanium platform enabling mid-infrared to near-infrared conversion for telecom and sensing applications

This paper presents the potential of silicon germanium waveguides in the nonlinear conversion of light from mid-infrared wavelengths to the telecom band utilizing four-wave mixing. Design aspects and first characterization results of fabricated devices are presented

Transmission performance of phase-preserving amplitude regenerator based on optical injection locking

We experimentally investigate the phase-to-amplitude noise redistribution of a 10Gbit/s BPSK signal in a phase-preserving amplitude regenerator based on optical injection locking and demonstrate its performance in a transmission experiment over an installed fiber link

Towards nonlinear conversion from mid- to near-infrared wavelengths using Silicon Germanium waveguides

We demonstrate the design, fabrication and characterization of a highly nonlinear graded-index SiGe waveguide for the conversion of midinfrared signals to the near-infrared. Using phase-matched four-wave mixing, we report the conversion of a signal at 2.65 μm to 1.77 μm using a pump at 2.12 μm.©2013 Optical Society of America

Highly nonlinear tellurite glass fiber for broadband applications

We report the characterization of loss and nonlinearity of a broadband tellurite glass fiber both at 1.55µm and 2µm wavelengths. The study is accompanied by a demonstration of wavelength conversion at both of these wavelengths

Optical properties of silicon germanium waveguides at telecommunication wavelengths

We present a systematic experimental study of the linear and nonlinear optical properties of silicon-germanium (SiGe) waveguides, conducted on samples of varying cross-sectional dimensions and Ge concentrations. The evolution of the various optical properties for waveguide widths in the range 0.3 to 2 μm and Ge concentrations varying between 10 and 30% is considered. Finally, we comment on the comparative performance of the waveguides, when they are considered for nonlinear applications at telecommunications wavelengths. © 2013 Optical Society of America

FWM-based wavelength conversion of 40 Gbaud PSK signals in a silicon germanium waveguide

We demonstrate four wave mixing (FWM) based wavelength conversion of 40 Gbaud differential phase shift keyed (DPSK) and quadrature phase shift keyed (QPSK) signals in a 2.5 cm long silicon germanium waveguide. For a 290 mW pump power, bit error ratio (BER) measurements show approximately a 2-dB power penalty in both cases of DPSK (measured at a BER of 10-9) and QPSK (at a BER of 10-3) signals that we examined. © 2013 Optical Society of America