Jiang Xinhong, Zhang Hongxia, Zhang Yong, Qiu Ciyuan, Su Yikai
Opt Lett. 2018 Mar 1;43(5):1071-1074. doi: 10.1364/OL.43.001071.
We propose and experimentally demonstrate a compact silicon photonic interleaver based on an interfering loop containing a 1D Fabry-Perot (FP) cavity for coarse wavelength division multiplexing (CWDM) applications. The interleaver consists of a directional coupler and a FP cavity designed to minimize the channel crosstalk. Instead of using an off-chip optical circulator, the reflection light of the interleaver can be separated from the input by placing two identical interleavers in a Mach-Zehnder interferometer (MZI) structure for practical applications. We also study the impacts of fabrication errors of the MZI structure. The fabricated device has a footprint of 64 μm×70 μm and a channel spacing of ∼19 nm. The maximum crosstalk is -16 dB in a wavelength range from 1508 nm to 1590 nm.
我们提出并通过实验证明了一种基于包含一维法布里-珀罗（FP）腔的干涉环的紧凑型硅光子交织器，用于粗波分复用（CWDM）应用。该交织器由一个定向耦合器和一个旨在最小化信道串扰的FP腔组成。在实际应用中，通过将两个相同的交织器置于马赫-曾德尔干涉仪（MZI）结构中，交织器的反射光可与输入光分离，而无需使用片外光环行器。我们还研究了MZI结构制造误差的影响。所制造的器件占地面积为64μm×70μm，信道间距约为19nm。在1508nm至1590nm的波长范围内，最大串扰为-16dB。
