Crosstalk investigation in channel-drop filters with coupled-cavity based wavelength-selective reflection feedbacks

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• 作者：Kiazand Fasihi ; ^{k.fasihi@gu.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Abolqasem Hesam
• 关键词：Channel-drop filter ; Coupled-mode theory ; Crosstalk ; Finite-difference time-domain ; Photonic crystal
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：127
• 期：4
• 页码：2294-2297
• 全文大小：1418 K

文摘

We have investigated analytically the crosstalk in the channel-drop filters with a coupled-cavity based wavelength-selective reflection feedback. We show that using a systematic design method a high drop efficiency multi-channel-drop filters (CDF) can be achieved with a distinct crosstalk. Furthermore, a photonic crystal (PC) low crosstalk eight channel-drop filter (8 CDF) has been presented, which can be used in wavelength division multiplexing (WDM) systems. The finite-difference time-domain (FDTD) simulation results of the presented device, which is implemented in two dimensional PC, show the validity of the proposed design approach.