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A new type InGaAsP/InGaAlAs quantum well is employed for high-speed, high-efficiency all-optical wavelength conversion. Less than 6.4ps all-optical impulse response with a successful 40Gb/s NRZ data transmission is demonstrated.
Virtual contrast enhancement allows a high speed illumination sequence set optimization for high precision measurement tasks. Therefore an FPGA controls the illumination and processes a captured image stack inside the camera.
We introduce and experimentally demonstrate a single-shot real-time optical vector analyzer (OVA). This instrument combines amplified dispersive Fourier transform with stereopsis reconstruction and is inspired by binocular vision in biological eyes.
Recent work has experimentally demonstrated that heated infrared light-emitting diodes can absorb lattice heat to generate photons above unity efficiency. We present new record-high conversion efficiencies and use these sources for absorption spectroscopy at 2.5µm.
We present a method to independently measure the spectral phase of an optical frequency comb by heterodyning it with a second comb of arbitrarily detuned repetition rate and appropriately processing the resulting electrical frequency comb.
We present nonlinear effects induced by an intense terahertz field on the transmission response of metamaterial structures fabricated on silicon wafer, as well as ultrafast modulation in the terahertz response of our devices.
A technique for full spatio-temporal characterization of impulse responses of optical systems with an almost one-wave-cycle temporal resolution was developed. It was employed to characterize ultrashort Airy-Bessel light bullets generated by a circular diffraction grating.
We present a direct measurement of the inter-channel Kerr effect on the optical field of a continuous-wave probe affected by an on-off-keyed 10 Gb/s pump. Measurements are used to verify predictions of the Manakov-PMD equation.
We present a low-power Time-to-Digital Converter (TDC) module that provides 10 ps timing resolution, DNL better than 1.5% LSB and 160 ns dynamic range within a compact 6 cm × 6 cm × 8 cm housing. The USB link to the remote PC allows the easy setting of measurement parameters, the fast download of acquired data, and their visualization and storing via an user-friendly software interface. The module...
Time-of-Flight (TOF) sensors using different kinds of integrated phototransistors as photodetectors are presented in this work. The sensors as well as the phototransistors are implemented in a standard 180 nm CMOS process. A fill factor of 67 % is reached. At optimal working points of the phototransistors standard deviations better than 2.6 mm are achieved.
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