Toko electronic is a business conglomerate that began with producing coil, filter and inductor, as well as manufacturing electronic ceramic and semiconductor products.
东光电子是一家以线圈，滤波器和电感产品为初始业务，现在同时生产电子陶瓷产品和半导体产品的公司。
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The output amplitude and the length of pulses train are greatly improved with additional semiconductor optical amplifier and filter in the optical fiber loop as the DC component of input keeps low.