- Book学术

发布求助

文献互助智能选刊最新文献

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-03-15 DOI:10.1364/OL.554899

Jiaqi Wang, Guoxian Wu, Si Chen, Zunyue Zhang, Hui Zhang, Xu Li, Penghao Ding, Chuxian Tan, Yu Du, Youfu Geng, Xuejin Li, Hon Ki Tsang, Zhenzhou Cheng

引用次数: 0

摘要

亚波长光栅结构因其紧凑的尺寸和灵活的折射率定制而被广泛应用于集成光学设备中。本文介绍了一种用于 70 纳米厚硅波导（无上覆层）的亚波长光栅（SWG）耦合器。该器件的设计采用了三维有限差分时域仿真中的粒子群优化算法。实验测量表明，最小特征尺寸为 ∼210 nm 的 SWG 耦合器在 1550 nm 波长的横向电偏振光下，耦合效率峰值为 -7.0 dB，1-dB 带宽为 ∼40 nm，背反射为 ∼-18.7 dB。这种超薄器件结构简单、可重现性好，非常适合低成本传感和光电集成应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Subwavelength grating couplers for an ultrathin silicon waveguide.

Subwavelength grating structures are widely used in integrated optical devices due to their compact footprints and flexible refractive index tailoring. In this paper, we present a subwavelength grating (SWG) coupler for a 70-nm-thick silicon waveguide without the upper cladding. The device was designed by using a particle swarm optimization algorithm in 3D finite-difference time-domain simulation. Experimental measurements show that the SWG coupler with a minimum feature size of ∼210 nm has a peak coupling efficiency of -7.0 dB with a 1-dB bandwidth of ∼40 nm and a backreflection of ∼-18.7 dB at 1550 nm wavelengths for transverse-electric polarized light. The ultrathin device structure is simple and reproducible, making it well suited for sensing and optoelectronic integration applications at low cost.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.