Zhou Suxu, Dong Jiangli, He Donghui, Wang Yuan, Qiu Wentao, Yu Jianhui, Guan Heyuan, Zhu Wenguo, Zhong Yongchun, Luo Yunhan, Zhang Jun, Chen Zhe, Lu Huihui
Opt Lett. 2017 Apr 15;42(8):1496-1499. doi: 10.1364/OL.42.001496.
We propose and experimentally demonstrate a new electro-optically controllable add-drop filter based on light coupling between a microfiber knot ring (MKR) and a lithium niobate (LN) microwaveguide. In our design, the MKR works as a resonator and routes the resonant light into the LN microwaveguide. The LN microwaveguide, as an excellent intermediary between electronics and optics, is a robust platform that not only enables stable support and manipulation of the MKR but also provides amplitude tunability taking advantage of its electro-optic property. Two add-drop filters with different diameters of the MKR, 1.12 mm, and 560 μm respectively, are studied, and a maximum amplitude tunability of ∼0.139 dB/V is obtained. The results show that this design can be a solution to interconnect a microstructured optical fiber with a microstructured on-chip device and provide an effective method to realize the active on-chip integration of the conventional fiber system.
我们提出并通过实验证明了一种基于微光纤结环（MKR）与铌酸锂（LN）微波导之间光耦合的新型电光可控分插滤波器。在我们的设计中，MKR用作谐振器，并将谐振光路由到LN微波导中。LN微波导作为电子学和光学之间的出色中介，是一个强大的平台，不仅能够稳定地支撑和操纵MKR，还能利用其电光特性实现幅度可调性。研究了两个分别具有1.12毫米和560微米不同直径MKR的分插滤波器，并获得了约0.139 dB/V的最大幅度可调性。结果表明，这种设计可以作为将微结构光纤与微结构片上器件互连的解决方案，并提供一种实现传统光纤系统有源片上集成的有效方法。
