Variable optical attenuator based on a reflective Mach-Zehnder interferometer
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- 作者：Sitao Chen ; Yaocheng Shi ; yaocheng@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Sailing He ; Daoxin Dai
- 关键词：Variable optical attenuator (VOA) ; Silicon ; Waveguide ; Mach&ndash ; Zehnder interferometer (MZI) ; Reflector ; Bragg grating
- 刊名：Optics Communications
- 出版年：2016
- 出版时间：15 February 2016
- 年：2016
- 卷：361
- 期：Complete
- 页码：55-58
- 全文大小：850 K
文摘
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In this manuscript, we investigate a VOA on silicon using a reflective-MZI structure.
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Bragg-gratings work as broadband efficient reflectors at the ends of the MZI arms.
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The present VOA enables an intrinsically-high extinction ratio.
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The power consumption is reduced by half in comparison with the regular MZI-type VOA.
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For our device, the power consumption is about 10.8 mW for an attenuation of 35.5 dB.