激光和射频振荡器相位噪声的影响

2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535) Pub Date : 2004-10-08 DOI:10.1109/MWSYM.2004.1335913

Tae-Sik Cho, Changho Yun, Kanghee Kim, Kiseon Kim

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引用次数: 7

摘要

用功率谱密度函数分析讨论了激光和振荡器相位噪声对光纤无线电(RoF)系统的影响。结果表明，载波噪声比(CNR)惩罚与接收机电滤波器的带宽和射频(RF)信号振荡器的相位噪声密切相关，而不是与具有小差分延迟和直接检测方案的激光器的相位噪声有关。激光线宽为10 MHz和624 MHz时的CNR损失分别为0.045 dB和2.78 dB，而射频振荡器线宽从1 Hz增加到10 Hz时，在光纤色散为17 ps/km nm的标准单模光纤(SSMF)中，在50 GHz、24 km传输时，CNR损失约为10 dB。

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Effect of laser and RF oscillator phase noises

The effect of phase noises from a laser and an oscillator on radio over fiber (RoF) systems is analyzed and discussed with a power spectral density (PSD) function. It is shown that the carrier to noise ratio (CNR) penalty is deeply related to the bandwidth of a electrical filter at a receiver and the phase noise from a radio frequency (RF) signal oscillator rather than that from a laser with a small differential delay and a direct detection scheme. The CNR penalties due to the laser linewidths of 10 MHz and 624 MHz are 0.045 dB and 2.78 dB, while the increase of the RF oscillator linewidth from 1 Hz to 10 Hz results in about 10 dB penalty at 50 GHz, 24 km transmission in a standard single mode fiber (SSMF) with a fiber chromatic dispersion of 17 ps/km nm.

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来源期刊

2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)

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