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oe1(光电查) - 科学论文

2 条数据
?? 中文（中国） ▾

  • Widely Tunable Electro-Absorption Modulated V-Cavity Laser

    摘要： We report a widely tunable V-cavity laser monolithically integrated with an electro-absorption modulator (EAM). The device shows a 41-nm wavelength tunability covering 51 channels at 100GHz spacing on the ITU grid, with a side-mode suppression ratio (SMSR) higher than 47 dB. Error-free transmission over 50 km standard single-mode fiber at 10 Gb/s is demonstrated at all wavelengths over the tuning range. The integrated EAM exhibits a dynamic extinction ratio higher than 12.5 dB. The bit-error-rate measurements show a power penalty less than 3 dB for 50-km transmission. The results demonstrate that this ultra-compact and regrowth-free electro-absorption modulated tunable laser can be a cost-effective transmitter solution for DWDM metropolitan and access networks.

    关键词： monolithic integration,Tunable V-cavity laser,electro-absorption modulated laser

    更新于2025-09-16 10:30:52

  • Blind compensation technique for nonlinear distortions in RoF-based mobile fronthaul network by using EML

    摘要： We propose a blind compensation technique to mitigate the waveform distortions caused by the nonlinear transfer function of the electro-absorption modulated laser (EML) in the radio-over-?ber (RoF) system. The proposed technique automatically adjusts its coe?cients by using the magnitude of the waveform distortions measured at right outside the signal’s bandwidth. By using the proposed technique, we successfully demonstrate the transmission of twelve 198-MHz ?ltered-orthogonal-frequency-division-multiplexed (f-OFDM) signals modulated in 256 quadrature amplitude modulation (QAM) format in the RoF–based mobile fronthaul network (MFN) implemented by using EML.

    关键词： Mobile fronthaul network,Nonlinear distortions,Electro-absorption modulated laser,Radio-over-?ber

    更新于2025-09-09 09:28:46