A Polarization-Insensitive 3 dB Power Splitter Based On Inverse-Designed Subwavelength Pixelated Structure

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-12 DOI:10.1109/LPT.2025.3550542

Lei Zhang;Hongzhe Ouyang;Yaxin Yu;Jiao Zhang;Min Zhu;Shengbao Wu;Jinbiao Xiao

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引用次数: 0

Abstract

The polarization-independent power splitters (PIPSs) are essential for enabling efficient integration in photonic circuits. In this letter, we propose and experimentally demonstrate an ultra-compact, broadband 3 dB PIPS, whose design is based on a sub-wavelength pixelated structure with a footprint of

$2.5\times \,\, 1.5~\mu $

m2. The initial pixelated structure is carefully designed to enhance algorithm robustness of the optimization process, thereby improving efficiency and avoiding local optima. The experimental results show that the insertion loss of both TE0 and TM0 is lower than 1.5 dB within the wavelength range of 1480-1580 nm, while the beam splitting ratio between the two output ports remains above 75%. In addition, the fabrication tolerance of the device is examined to ensure low insertion loss and reflection loss. This ultra-compact on-chip device demonstrates significant potential for advancing high-density integration in optical circuits.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.