A Lithium Niobate (LiNbO3) - Chalcogenide-Based Thin Film Composite Asymmetric Y-Type On-Chip Wavelength Division Multiplexer

IF 2.4 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-07-22 DOI:10.1109/JPHOT.2025.3591831

Bowen Liu;Nuo Xu;Wanqi Guo;Xinyue Liu;Baoan Song

引用次数: 0

Abstract

This study presents an on-chip dual-mode multiplexer based on a lithium niobate-sulfide thin-film composite adiabatic coupler. The device integrates two input waveguides with distinct structures into a shared output waveguide, enabling selective mode conversion and combination through precise manipulation of the refractive index distribution. Simulation results demonstrate that the device functions across a broad wavelength range of 1500–1600 nm, achieving a wideband operation with crosstalk below 17 dB and insertion loss under 1.36 dB. Tolerance analysis reveals that the device maintains satisfactory performance even with variations in etching depth and waveguide gap within a ±50 nm range. Experimental results show that the overall coupling efficiency of the device is approximately −27 dB.

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铌酸锂(LiNbO3) -硫族化物薄膜复合非对称y型片上波分复用器

提出了一种基于铌酸锂-硫化物薄膜复合绝热耦合器的片上双模多路复用器。该器件将两个具有不同结构的输入波导集成到一个共享输出波导中，通过精确操纵折射率分布实现选择性模式转换和组合。仿真结果表明，该器件在1500 ~ 1600 nm的宽波长范围内工作，实现了串扰低于17 dB、插入损耗低于1.36 dB的宽带工作。公差分析表明，在±50 nm范围内，即使蚀刻深度和波导间隙发生变化，器件也能保持令人满意的性能。实验结果表明，该器件的整体耦合效率约为−27 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.