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基于复合型耦合器的新型透射式GT交错复用器及色散补偿
Authors
张宇
王秀琳
+3 more
蔡志平
许惠英
黄文财
Publication date
10 July 2010
Publisher
Abstract
提出了基于复合型耦合器的透射式GT腔,并将其串入马赫-曾德尔干涉仪(MZI)的两臂上,得到了一种新型的交错复用器。推导了该器件的理论表达式,并进行了数值模拟。模拟结果表明,该交错复用器具有相当好的通带平坦性,大的通带带宽、截止度和阻带带宽。对该交错复用器进行了优化分析,发现腔数固定时,纹波带宽比越大(频谱越接近矩形方波),隔离度将越小。分析结果表明,可以通过增加腔的数量来解决纹波带宽与隔离度的矛盾,即交错复用器的频谱性能随着腔数的增加得以改善。相对于环形谐振腔辅助的交错复用器,该交错复用器不需要添加额外的相移器就能获得近似矩形的频谱,并且在整个工作波段范围具有很好的频谱均匀性。对于该器件的色散问题,提出了采用级联环形腔作为色散补偿器的补偿方案。模拟结果表明,级联环形腔能够很好地补偿该交错复用器的色散
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Last time updated on 16/06/2016