激光与光电子学进展, 2018, 55 (3): 031301, 网络出版: 2018-09-10
基于微谐振器的光子晶体光信号分离器 下载: 810次
Photonic Crystal Optical Signal Splitter Based on Micro Resonator
集成光学 光信号分离器 微型谐振器 时域有限差分法 耦合模理论 粗波分解复用 宽调谐通带 integrated optics optical signal splitter micro resonator finite-difference time-domain method coupled-mode theory coarse wavelength division demultiplexing broadly tunable passband
摘要
为获得超宽可调谐光波长信号分束,在二维光子晶体结构中设计了基于微谐振器的光信号分离器;通过耦合模理论定性分析了不同设计情况下光信号分离器的工作性能;用时域有限差分方法研究了两输出端对称的光信号分离器的工作特性,通过调节5×5微型谐振器的结构和整体柱的相对介电常数,分别得到了29个和38个通带,信道波导提取峰值波长与通带宽度的范围分别为1310.0~1655.5 nm和2.0~7.4 nm;该结构具有宽调谐通频带、有效滤除噪声信号以及同一峰值波长光信号等功率分束的特性;提出的结构在粗波分解复用设计、光信号功率均分设计、光学设计集成化等领域具有潜在的应用价值。
Abstract
In order to obtain ultra-broadly tunable optical wavelength signal splitting, we design optical signal splitter based on micro resonator in the two-dimensional photonic crystal structure. The performance of the optical signal splitter is qualitatively analyzed by coupled-mode theory under different design conditions. Operating characteristics of optical signal splitter with two symmetrical outputs are studied by the finite-difference time-domain method. The results show that the splitter achieves 29 and 38 passbands by adjusting the structures of micro resonators of 5×5 and relative dielectric constants of the whole rods, respectively. Channel waveguide dropping peak wavelength and bandwidth ranges are 1310.0~1655.5 nm and 2.0~7.4 nm, respectively. The structure has characteristics of broadly tunable passband, effectively removing noise signals, optical signal equal power splitting at the same peak wavelength. The proposed signal splitter structure has potential application value in the fields of coarse wavelength division demultiplexing design, optical signal equal power splitting design, integration of optical design, etc.
吴立恒, 王明红. 基于微谐振器的光子晶体光信号分离器[J]. 激光与光电子学进展, 2018, 55(3): 031301. Liheng Wu, Minghong Wang. Photonic Crystal Optical Signal Splitter Based on Micro Resonator[J]. Laser & Optoelectronics Progress, 2018, 55(3): 031301.