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东芝公司开发出一种波分复用光通信用波长可调光源的单波长控制方法。波长可调光源是采用半导体激光器改变波长的方法 ,因此有利于降低波分复用光通信的成本。但因波长随电流值而变 ,故需要精密控制。以往是利用阵列波导光栅分波器 (AWG)进行分光 ,按每个波长配备很多光探测器
Toshiba has developed a single wavelength control method for a wavelength-tunable light source for wavelength-division multiplexing optical communications. The wavelength tunable light source is a method that uses a semiconductor laser to change the wavelength, thereby reducing the cost of the wavelength division multiplexed optical communication. However, the wavelength changes with the current value, so you need precise control. The past is the use of array waveguide grating splitter (AWG) for spectroscopy, each wavelength with a lot of light detectors