四分之一（加拿大硬币）
光学
激光器
分布反馈激光器
物理
材料科学
地理
考古
作者
Katsuyuki Utaka,S. Akiba,Kenji Sakai,Yuichi Matsushima
出处
期刊：Electronics Letters
[Institution of Engineering and Technology]
日期：1984-04-12
卷期号：20 (8): 326-327
被引量：63
摘要
Wavelength selectivity of a quarter-wave-shifted DFB laser is analysed taking into account the effect of a mirror facet at the end of the corrugation. The structure with no reflection is found to be the most promising. The effect of a cleaved facet at an end is not serious as long as KL is as large as 3–5.
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