摘要
对半导体光放大器(SOA)放大的自发发射(ASE)谱进行了实验和理论研究,并且分析了SOA端面反射率对ASE谱的谱宽以及平坦度的影响.结果表明,不恰当的抗反膜会严重减小输出光谱的带宽;而在采用具有宽带材料增益谱的有源区基础上,结合抗反膜的优化设计,则可以获得既宽又平坦的非相干光源.
The output amplified spontaneous emission (ASE) spectrum from a semiconductor optical amplifier (SOA) is studied theoretically and experimentally. The effect of facet reflectivity on the bandwidth and flatness of the ASE spectrum is investigated,and it is found that an improper antireflection coating narrows the bandwidth of the ASE spectrum. For an SOA with an active region with a wide material gain spectrum,an optimal antireflection coating helps to realize an SOA-based incoherent optical source with a high bandwidth and good flatness.
基金
国家自然科学基金资助项目(批准号:60577007
60407001)~~
关键词
半导体光放大器
非相干光源
带宽
平坦度
抗反膜
semiconductor optical amplifier
incoherent optical source
bandwidth
flatness
antireflection coating