光隔离器
插入损耗
隔离器
光子学
硅光子学
光学
调制(音乐)
带宽(计算)
光子集成电路
相位调制
计算机科学
材料科学
波分复用
光电子学
光纤
电子工程
电信
物理
相位噪声
工程类
声学
波长
作者
Nathan Dostart,Hayk Gevorgyan,Deniz Onural,Miloš A. Popović
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-01-19
卷期号:46 (3): 460-460
被引量:14
摘要
Optical isolators, while commonplace in bulk- and fiber-optic systems, remain a key missing component in integrated photonic systems. Isolation using magneto-optic effects has been difficult to implement due to fabrication restraints, motivating use of other non-reciprocal effects such as temporal modulation. We demonstrate a non-reciprocal modulator comprising a pair of microring modulators and a microring phase shifter in an active silicon photonic process which, in combination with standard frequency filters, facilitates isolation. Isolation up to 13 dB is measured with a 3 dB bandwidth of 2 GHz and insertion loss of 18 dB. As one potential application is cross-talk suppression in bi-directional communication links, we also show transmission of a 4 Gbps data signal through the isolator while retaining a wide-open eye diagram. This compact design, in combination with increased modulation efficiency, could enable modulator-based isolators to become a standard `black-box' component in integrated photonics foundry platform component library.
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