Chirp-free optical modulation using a silicon push-pull coupling microring.
Chirp-free optical modulation using a silicon push-pull coupling microring.
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DOI：
10.1364/ol.34.000785
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发表时间：
2009-03
期刊：
影响因子：
3.6
通讯作者：
Tong Ye;Yifeng Zhou;Cishuo Yan;Yun-tao Li;Yikai Su
中科院分区：
文献类型：
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作者：
Tong Ye;Yifeng Zhou;Cishuo Yan;Yun-tao Li;Yikai Su
我们提出了一种基于硅环的光调制方法来执行无啁啾光调制。在该方案中，我们将待调制的光定位在环的谐振处，并通过使用推挽耦合结构来调整环与直波导之间的耦合系数。无啁啾相位调制可以通过在大范围内改变耦合系数来实现，这可以改变环的耦合条件，使得输入光在输出处经历π的突然相移。如果在小范围内调整耦合系数，保持环的耦合条件不变，则仅对光的强度进行调制。这导致无啁啾强度调制。我们以 10 Gbits/s 进行的模拟证实了该提案的可行性。
We propose a silicon ring-based optical modulation method to perform chirp-free optical modulations. In this scheme, we locate the light to be modulated at the resonance of the ring and tune the coupling coefficient between the ring and the straight waveguide by using a push-pull coupling structure. The chirp-free phase modulation can be achieved by varying the coupling coefficient in a large range, which can modify the coupling condition of the ring such that the input light experiences an abrupt phase shift of pi at the output. If the coupling coefficient is adjusted in a small range such that the coupling condition of the ring is kept unchanged, only the intensity of the light will be modulated. This leads to chirp-free intensity modulation. Our simulations performed at 10 Gbits/s confirm the feasibility of the proposal.