Dynamic Optical Amplifiers Enable Distributed Equalization in Optical Transmission Systems

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-06-10 DOI:10.1109/JPHOT.2025.3578614

Hongqiang Zou;Da Liu;Kai Zhang

引用次数: 0

Abstract

In this paper, we design and simulated a novel dynamic gain flattening filter (DGFF) module based on polarization-insensitive liquid crystal on silicon (PI-LCoS). The DGFF module measures 26*10.5 mm in size and integrates four DGFFs. Its compact design and minimal optical components reduce costs and enhance manufacturability. In our lab, we built a 6THz C-band transmission system and compared a novel distributed equalization scheme using DGFF in EDFAs with traditional centralized schemes. Results showed that this scheme effectively balanced OSNR across channels, reducing OSNR flatness from 3.5 dB to 0.5 dB. Additionally, it decreased ROADM station attenuation, leading to an average OSNR improvement of about 0.47 dB.

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动态光放大器实现光传输系统中的分布式均衡

本文设计并仿真了一种基于偏振不敏感硅基液晶（PI-LCoS）的动态增益平坦滤波器（DGFF）模块。DGFF模块尺寸为26*10.5 mm，集成了4个DGFF。其紧凑的设计和最小的光学元件降低了成本，提高了可制造性。在我们的实验室中，我们构建了一个6THz c波段传输系统，并将DGFF在edfa中的分布式均衡方案与传统的集中式方案进行了比较。结果表明，该方案有效地平衡了信道间的OSNR，将OSNR平坦度从3.5 dB降低到0.5 dB。此外，它还降低了ROADM站的衰减，导致平均OSNR提高约0.47 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.