Ultrahigh-Bandwidth Optical Signal Processing
Ultrahigh-Bandwidth Optical Signal Processing

PicoLuz pioneers the commercialization of ultrafast optical signal processing systems bases on the time lens technology. Temporal imaging systems based on time lens enable compression, expansion, inversion, or Fourier-transformation of optical waveforms. The time lens technology used in our products benefits from broadband and power-efficient four-wave mixing in dispersion engineered waveguides and is capable of processing information with bandwidths beyond 1 THz. Our first product, the ultrafast temporal magnifier, realizes the simplest form of time lens based temporal processing. This system enables stretching optical waveforms in time by very large factors (> 500) such that they can be detected and characterized using standard photo-detectors and oscilloscopes. One of the unique advantages offered by time lens systems is their capability for single-shot processing, which allows for characterizing non-repetitive waveforms. For example, single-shot optical waveform characterization with temporal resolutions better than 250 fs and record lengths longer than 100 ps has been recently demonstrated [Nature 456, 81-84 (2008)]. For more details, please visit our technology and products pages.

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Silicon Nanophotonic Waveguides
Silicon Nanophotonic Waveguides

PicoLuz is developing silicon nanophotonic waveguides that are especially designed to optimize their optical nonlinearity. These devices combine a large nonlinear coefficient with an exceptional flexibility to engineer the waveguide dispersion, both of which are key factors in achieving power-efficient and broadband wavelength conversion. Our effort in silicon photonics device development is supported by cutting-edge scientific research at Cornell University on a variety of systems based on the four-wave mixing process in silicon nano-waveguides, including mid-infrared optical sources and broadband optical comb generators. Engineering the zero-dispersion wavelength in silicon nanophotonic devices leads to extremely broadband wavelength coversion systems, for example, from the communications band to the mid-infrared [Optics Letters 36, 1262-1265 (2011)]. Combing the dispersion engineering with the light enhancement in micro-cavity geometries such as micro-ring resonators enables optical parametric oscillation on chip-scale devices [Nature Photonics 4, 37-40 (2009)], leading to the generation of broadband optical frequency combs.

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