Transmission of 100-Gb/s PAM-6 Signal by Using DML Wavelength-Locked to Delay Interferometer

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

IEEE Photonics Journal Pub Date : 2025-08-26 DOI:10.1109/JPHOT.2025.3602815

Horyun Lee;Hoon Kim

引用次数: 0

Abstract

We experimentally demonstrate the transmission of 100-Gb/s 6-ary pulse amplitude modulation signal over 2-km standard single-mode fiber using a 1.55-μm directly-modulated laser (DML) wavelength-locked to a delay interferometer (DI). The DI, serving as an optical equalizer, not only improves the extinction ratio, but also compensates for the waveform distortions induced by fiber chromatic dispersion. Thus, no nonlinear electrical equalizer is employed in our experiment. The DML’s wavelength is locked to the transmittance curve of the DI so that the system operates in a stable manner under external perturbations. The experimental results show that we achieve a decent receiver sensitivity of −2.4 dBm after the transmission. We also demonstrate a long-term stable operation even when the DI is subject to temperature variations or frequency dithering by a sinusoidal wave.

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DML锁波延时干涉仪传输100gb /s PAM-6信号

利用1.55 μm波长锁定的直接调制激光器（DML）在延时干涉仪（DI）上实现了100gb /s 6元脉冲调幅信号在2 km标准单模光纤中的传输。DI作为光均衡器，不仅可以提高消光比，还可以补偿光纤色散引起的波形畸变。因此，在我们的实验中没有使用非线性电均衡器。DML的波长锁定在DI的透射率曲线上，使系统在外部扰动下以稳定的方式运行。实验结果表明，我们在发射后获得了- 2.4 dBm的良好接收机灵敏度。我们还证明了即使DI受到温度变化或正弦波频率抖动的影响，也能长期稳定运行。

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.