نتایج جستجو برای: signal amplification
تعداد نتایج: 470340 فیلتر نتایج به سال:
We demonstrate that a distributed Raman amplification scheme based on random distributed feedback (DFB) fiber laser enables bidirectional second-order Raman pumping without increasing relative intensity noise (RIN) of the signal. This extends the reach of 10 × 116 Gb/s DP-QPSK WDM transmission up to 7915 km, compared with conventional Raman amplification schemes. Moreover, this scheme gives the...
Four-wave optical parametric amplification (FWOPA) in a Raman-active medium is experimentally investigated by use of an air-filled hollow fiber. A femtosecond pump pulse shorter than the period of molecular motion excites the coherent molecular motion of the Raman-active molecules during the parametric amplification of a signal pulse. The excited coherent motion modulates the frequency of the s...
Tumor cell-derived exosomes are considered a potential source of cancer biomarkers. Here, we developed an electrochemical sensing platform for the rapid and simple detection exosomes, using CCRF-CEM exosome as model. The utilizes cyclic nicking enzyme cleavage hybridization chain reaction (HCR) dual-signal amplification. A hairpin aptamer probe (HAP) containing was designed assay. specific bind...
Cancer immunophenotyping by seven-colour multispectral imaging without tyramide signal amplification
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