In this paper, design and performance estimation of a hybrid plasmonic-based optical filter operating at 1550 nm in the presence of stress is presented. The proposed integrated Bragg grating (IBG) filter consists of periodically corrugated grooves on the upper metal surface of hybrid plasmonic waveguide (HPW), which is realized on the SOI platform. In this study, two cross-sectional geometries of HPW namely rectangular and triangular are considered to investigate its effect on proposed filters. For HPW with triangular cross sections, the ridge angles (\(\alpha\)) of \(25^{\circ }\) and \(35^{\circ }\) have been categorically selected, as they are viable to fabricate. In the HPWs, the stress is found to be generated due to the difference in thermal expansion coefficients (TECs) and lattice constants of low-index dielectric, high-index dielectric and metal layers. This work aimed to estimate the impact of stress effect on the optical performance determining parameters of proposed filters such as resonance wavelength (\(\lambda _{res}\)), bandwidth (BW), extinction-ratio (ER), and insertion loss (IL). The performance estimation of the designed filter has been done using the conventional transfer matrix method (TMM) and is compared with 3D commercial-grade numerical device modelling tool in the absence and presence of stress. The efficacy of the proposed filter has been demonstrated for different 3 dB bandwidths of 15 nm, 10 nm, 5 nm, and 1.6 nm. The study demonstrates that in absence of stress the performance of the filter, which is designed using conventional TMM for a set of filter parameters found to be at par in terms of the optical performance of the filter, which is designed using commercial numerical device modelling software. In the presence of stress, the conventional TMM method fails to design the HPW-IBG filter and shows the difference in performance when analyzed using commercial numerical device modelling software. Our studies also reveal that for all designed filters, the triangular HPW with \(35^{\circ }\) ridge angle induces the highest magnitude of stress as compared to the triangular waveguide with \(25^{\circ }\) ridge angle and rectangular waveguide. The numerical studies show the estimated changes in \(\lambda _{res}\), BW, ER and IL for the HPW-IBG filter, which is designed using TMM in presence of stress as 1520 pm, 26%, 36%, and 19%, respectively. A significant variation in HP IBG filter performance in the presence of stress establishes the necessity to consider the stress effect in designing any HPW devices which are suitable for photonic integrated circuits.

在本文中，介绍了在存在应力的情况下工作在 1550 nm 的基于混合等离子体的光学滤波器的设计和性能评估。所提出的集成布拉格光栅 (IBG) 滤波器由混合等离子体波导 (HPW) 上金属表面上的周期性波纹槽组成，这是在 SOI 平台上实现的。在这项研究中，考虑 HPW 的两种横截面几何形状，即矩形和三角形，以研究其对提议的滤波器的影响。对于具有三角形横截面的 HPW ，\(25^{\circ }\)和\(35^{\circ }\)的脊角 ( \(\alpha\) )已被明确选择，因为它们是可行的。在 HPW 中，发现应力是由于低指数电介质、高指数电介质和金属层的热膨胀系数 (TEC) 和晶格常数的差异而产生的。这项工作旨在估计应力效应对所提出的滤波器的光学性能决定参数的影响，例如共振波长 ( \(\lambda _{res}\))、带宽 (BW)、消光比 (ER) 和插入损耗 (IL)。使用传统的传递矩阵方法 (TMM) 对设计的滤波器进行了性能评估，并在应力不存在和存在的情况下与 3D 商业级数值设备建模工具进行了比较。已针对 15 nm、10 nm、5 nm 和 1.6 nm 的不同 3 dB 带宽证明了所提出的滤波器的功效。研究表明，在没有压力的情况下，滤波器的性能是使用传统 TMM 设计的，用于一组滤波器参数，发现滤波器的光学性能相当，这是使用商业数值设备建模软件设计的. 在压力面前，传统的 TMM 方法无法设计 HPW-IBG 滤波器，并且在使用商业数值设备建模软件进行分析时显示出性能差异。我们的研究还表明，对于所有设计的滤波器，三角形 HPW与具有\(25^{\circ }\)脊角和矩形波导的三角形波导相比，\(35^{\circ }\)脊角引起的应力最大。数值研究显示了HPW-IBG 滤波器的\(\lambda _{res}\)、BW、ER 和 IL的估计变化，该滤波器是使用 TMM 在存在应力的情况下设计的，分别为 1520 pm、26%、36%、和 19%，分别为。存在应力时 HP IBG 滤波器性能的显着变化表明在设计任何适用于光子集成电路的 HPW 器件时必须考虑应力效应。