Saber Md Ghulam, Wang Yun, El-Fiky Eslam, Patel David, Shahriar Kh Arif, Alam Md Samiul, Jacques Maxime, Xing Zhenping, Xu Luhua, Abadía Nicolás, Plant David V
Opt Lett. 2018 Jan 1;43(1):13-16. doi: 10.1364/OL.43.000013.
We design and demonstrate Fabry-Perot resonators with transverse coupling using Bragg gratings as reflectors on the silicon-on-insulator (SOI) platform. The effects of tailoring the cavity length and the coupling coefficient of the directional coupler on the spectral characteristics of the device are studied. The fabricated resonators achieved an extinction ratio (ER) of 37.28 dB and a Q-factor of 3356 with an effective cavity length of 110 μm, and an ER of 8.69 dB and a Q-factor of 23642 with a 943 μm effective cavity length. The resonator structure presented here has the highest reported ER on SOI and provides additional degrees of freedom compared to an all-pass ring resonator to tune the spectral characteristics.
我们在绝缘体上硅（SOI）平台上设计并展示了使用布拉格光栅作为反射器的具有横向耦合的法布里-珀罗谐振器。研究了调整腔长和定向耦合器的耦合系数对器件光谱特性的影响。制造的谐振器在有效腔长为110μm时实现了37.28dB的消光比（ER）和3356的品质因数，在有效腔长为943μm时实现了8.69dB的ER和23642的品质因数。这里展示的谐振器结构在SOI上具有已报道的最高ER，并且与全通环形谐振器相比提供了额外的自由度来调谐光谱特性。
