讨论了基于半导体激光放大器的波长转换器，它是光交换块中的关键元件，也是未来光通信系统中的关键元件。
Optical Wavelength converters based on semiconductor laser amplifiers are discussed, which is key components in photonic switching blocks, and also necessary devices in future optical communication.
从理论上分析了各种半导体光放大器波长转换器的转换原理，并给出了它们的各种结构。
The principle of the conversion is theoretically analysed for wavelength converters with semiconductor optical amplifier, and their structures are giver.
介绍了一种以半导体激光器为光源，以新型CMOS面阵图象转换器件为传感器的智能型覆铜板测厚系统。
An intelligent coated plate thickness measurement system based on a semiconductor laser diode as light source and a CMOS image sensor is introduced.
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