Design of a four channel green-wavelength multiplexer based on multicore polymer optical fiber

IF 5 2区 物理与天体物理 Q1 OPTICS
Bar Gelkop, Dror Malka
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引用次数: 0

Abstract

The growing demand for compact photonic systems in the green spectral range necessitates fully integrated wavelength division multiplexing (WDM) solutions. Conventional multiplexers often rely on bulky components, resulting in high insertion losses and limited integration potential. Concurrently, advances in neuromorphic photonic computing require novel devices that support both spectral multiplexing and optical weighting within a unified platform. This study introduces a compact four-channel green-wavelength optical multiplexer based on a multi-core polymer optical fiber (MC-POF) embedded with polycarbonate (PC) cores. The device passively multiplexes light via engineered coupling between adjacent cores, operating across the 500–560 nm range without the need for external optics. Beam propagation method (BPM) simulations, combined with MATLAB-based optimization, confirm that a 20 mm fiber segment enables low insertion losses (0.13–0.55 dB), sharp channel isolation, and high thermal stability. A single optimized coupling region enables 20 nm channel spacing across four wavelengths and acts analogously to a synaptic junction, allowing simultaneous signal convergence. This design not only supports efficient green-spectrum transmission but also lays the groundwork for integrated neuromorphic photonic networks. Experimental validation was performed using a two-channel PC-MC-POF with 500 nm and 540 nm green laser sources. Collimated beams were coupled into separate fiber cores, and the multiplexed output was directly imaged using a CMOS camera. The measured far-field intensity profile closely matches simulation results, confirming effective spatial multiplexing and validating the theoretical model. The proposed PC-MC-POF multiplexer offers a scalable, low-loss, and energy-efficient solution for green-wavelength WDM systems. It serves both as a functional optical multiplexer and a foundational building block for photonic neural architectures, contributing to the development of next-generation integrated optical communication and computing technologies.
基于多芯聚合物光纤的四通道绿色波长复用器的设计
对绿色光谱范围内的紧凑型光子系统日益增长的需求需要完全集成的波分复用(WDM)解决方案。传统的多路复用器通常依赖于体积庞大的组件,导致高插入损耗和有限的集成潜力。同时,神经形态光子计算的进步需要在统一平台内支持光谱多路复用和光加权的新设备。本研究介绍了一种基于嵌入聚碳酸酯(PC)芯的多芯聚合物光纤(MC-POF)的紧凑型四通道绿色波长光复用器。该器件通过相邻核心之间的工程耦合被动复用光,在500 - 560nm范围内工作,无需外部光学器件。波束传播方法(BPM)仿真与基于matlab的优化相结合,证实了20mm光纤段可实现低插入损耗(0.13-0.55 dB),锐利的通道隔离和高热稳定性。单个优化的耦合区域可以在四个波长上实现20 nm的通道间距,并类似于突触连接,允许同时收敛信号。该设计不仅支持高效的绿光谱传输,而且为集成神经形态光子网络奠定了基础。实验验证采用双通道PC-MC-POF和500 nm和540 nm的绿色激光源。将准直光束耦合到单独的光纤芯中,并使用CMOS相机直接对复用输出进行成像。实测远场强度曲线与仿真结果吻合较好,证实了空间复用的有效性,验证了理论模型。提出的PC-MC-POF多路复用器为绿色波长WDM系统提供了可扩展、低损耗和节能的解决方案。它既是一个功能性光多路复用器,也是光子神经架构的基础构建块,有助于下一代集成光通信和计算技术的发展。
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来源期刊
CiteScore
8.50
自引率
10.00%
发文量
1060
审稿时长
3.4 months
期刊介绍: Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems
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