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Phase-shifted distributed feedback type semiconductor laser diode capable of improving wavelength chirping and external reflection return light characteristics and method for manufacturing the same
Phase-shifted distributed feedback type semiconductor laser diode capable of improving wavelength chirping and external reflection return light characteristics and method for manufacturing the same
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机译:能够改善波长线性调频和外反射返回光特性的相移分布反馈型半导体激光二极管及其制造方法
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摘要
In a distributed feedback type semiconductor layer diode including a semiconductor substrate, an optical guide layer formed on the semiconductor substrate, a diffraction grating having a phase shift region being formed between the semiconductor substrate and the optical guide layer, and an active layer formed on the optical guide layer, ;where is a coupling coefficient of the diffraction grating, L is a cavity length of the diode, is a detuning amount denoted by g where g is a gain peak wavelength of the diode and is an oscillation wavelength of the diode, A is a constant from 0.04 nm1 to 0.06 nm1, and B is a constant from 3.0 to 5.0.
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机译:在包括半导体衬底,形成在半导体衬底上的光导层,在半导体衬底和光导层之间形成具有相移区域的衍射光栅,以及形成在半导体衬底上的有源层的分布式反馈型半导体层二极管中。导光层,其中是衍射光栅的耦合系数,L是二极管的腔长,是由 g Sub>表示的失谐量,其中 g Sub>是增益二极管的峰值波长,是二极管的振荡波长,A为0.04 nm 1 Sup>至0.06 nm 1 Sup>的常数,B为3.0至5.0的常数。
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