Dependence of spectral linewidth on cavity length and coupling coefficient in DFB laser
Dependence of spectral linewidth on cavity length and coupling coefficient in DFB laser
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DFB 激光器中光谱线宽对腔长和耦合系数的依赖性
DOI：
10.1049/el:19880415
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发表时间：
1988
影响因子：
1.1
通讯作者：
H. Imai
中科院分区：
文献类型：
--
作者：
S. Ogita;Y. Kotaki;K. Kihara;M. Matsuda;H. Ishikawa;H. Imai
研究了 DFB 激光器的光谱线宽对腔长和耦合系数的依赖性。实验表明，长腔对于减小DFB激光器的光谱线宽非常有效，而大耦合系数则无效。波纹深度为15 nm，腔长为1200 μm，在11 mW 下获得了1.7 MHz 的窄线宽。
The dependence of the spectral linewidth of DFB lasers on cavity length and coupling coefficient has been investigated. It was shown experimentally that the long cavity was very effective at reducing the spectral linewidth of DFB lasers, whereas a large coupling coefficient was ineffective. With a corrugation depth of 15 nm and a cavity length of 1200 mu m, a narrow linewidth of 1.7 MHz was obtained at 11 mW.