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We experimentally demonstrate a novel method to make a tunable Fano resonance. Based on a silicon microring with two tunable reflectors inside, we are able to generate a tunable Fano resonance with maximum extinction ratio over 40 dB and a slope rate over 700dB/nm.
Silicon microrings have proven their value in numerous optical applications. Usually it's desirable for them to have a high Q factor, thus a very narrow linewidth. But this will frequently facilitate resonance splitting because sidewall roughness induces backscattering and this couples the clockwise (CW) and counter-clockwise (CCW) propagating modes in the ring waveguide [1]. As a consequence their...
The waveguide is the most fundamental component of integrated photonic circuits. We observe that roughness-induced backscattering in high-contrast silicon waveguides generates over 10 dB spectral transmission variations in centimeter-long silicon waveguides.
Before software is released, developers often pack it with a software packer in order to protect the internal design. Many existing packers have been unpacked by crackers. To address this problem, we propose an encryption packer that strengthens confidentiality of the protected PE file with the security token. The packer also incorporates techniques of anti-debugging, anti-dumping, and anti-tracking...
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