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This means that a substantial improvement in the speed of a communication or computing system can be achieved if basic logic operations and signal routing is performed in the optical stage, by means of optically controlled devices with sub-picosecond switching times. As a consequence, much research...
Steady-state optical response Fig. 1: Ultrafast all-optical switching modulation concept. Full size image To prove the ENZ nature of our system, we first characterized the steady-state spectral response in terms of absoluteRas a function of the angle of incidenceθand of the incident light wavel...
All-optical switches have attracted attention because they can potentially overcome the speed limitation of electric switches. However, ultrafast, energy-efficient all-optical switches have been challenging to realize owing to the intrinsically small opt
That will require ultrafast technologies for processing optical signals in the form of light, without intermediate transformation to electrical signal processing. A key device of such systems will be ultrafast all-optical switching that can control the intensity of optical signals in an appropriate ...
20, 2019 — NTT and the Tokyo Institute of Technology (Tokyo Tech) have developed an all-optical switch that operates in the ultrafast regime with a response time in the femtosecond (fs) range and with energy consumption in the femtojoule (fJ) range. To achieve both speed and energy ...
We describe the use of two-photon absorption in submicron silicon wire waveguides for all-optical switching by cross-absorption modulation. Optical pulses of 3.2 ps were successfully converted from high power pump to low power continuous-wave signal with a fast recovery time. High speed operation ...
Ultrafast all optical switching using pulse trapping by 100 fs ultrashort soliton pulse across zero dispersion wavelength is investigated. The characteristics of pulse trapping are analyzed both experimentally and numerically. Using the pulse trapping, 1 THz ultrafast all optical switching is demonstrated ...
reaching consequences: the first lead‐iodide‐based ultrafast photonic device and resonantly confined electromagnetic field tailored transient nonequilibrium dynamics of PbI2 which could also be applied to a broad range of semiconductors for designing on‐chip, ultrafast, all‐optical switchable photonic ...
In this Letter, we report for the first time to our knowledge that all-optical switching gain can be achieved with a dual-wavelength control versus pump beam scheme in a single semiconductor waveguide structure. That means a weak optical beam can switch a strong optical beam. Moreover, a hig...