High-dynamic-range linear analog data links (1-20 GHz) using room temperature DFB laser diodes
High-dynamic-range linear analog data links (1-20 GHz) using room temperature DFB laser diodes
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使用室温 DFB 激光二极管的高动态范围线性模拟数据链路 (1-20 GHz)
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
J. White
中科院分区：
文献类型：
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作者：
I. White;P. Hartmann;J. Ingham;M. Webster;D. Wake;A. Wonfor;R. Penty;A. Seeds;J. White
本文报道了非制冷、直接调制的高速DFB激光器的分析和应用，重点介绍了它们的模拟传输性能。使用这种激光器的光纤链路在高载波频率和高温下都能满足模拟系统的最严格要求。在25℃和85℃时，对于频率分别为20 GHz和10 GHz的载波，无杂散动态范围(SFDR)分别超过100db×Hz2/3和90db×Hz2/3，输入三阶截止点(IIP3)分别超过20dBm和18dBm。在所有测量温度下，对于2 GHz和5 GHz的载波频率，通过15公里SMF传输的256-QAM调制信号的误差向量幅度(EVM)保持在1.9%以下。通过使用3GPP W-CDMA、IEEE 802.11a和IEEE 802.11b信号来评估链路性能。在所有情况下，EVM都保持在标准规格范围内，光纤链路长度可达10公里，激光工作温度可达70°C。最后，提供了IEEE802.11b无线局域网演示器，允许天线在62.5/125μm MMF的1000米范围内远程传输。
We report the analysis and application of uncooled, directly-modulated high-speed DFB lasers with emphasis on their analogue transmission performance. Fibre-optic links employing such lasers are shown to meet the most stringent requirements of analogue systems at both high carrier frequencies and high temperatures. Spurious-free dynamic ranges (SFDR) exceeding 100dB×Hz2/3 and 90dB×Hz2/3 and input third-order intercept points (IIP3) above 20dBm and 18dBm are reported for carrier frequencies up to 20GHz at 25°C and up to 10GHz at 85°C, respectively. The error-vector magnitude (EVM) for a 256-QAM modulated signal transmitted over 15km of SMF remains below 1.9% for carrier frequencies of both 2GHz and 5GHz for all measured temperatures. The link performance is assessed by using 3GPP W-CDMA, IEEE 802.11a and IEEE 802.11b signals. In all cases the EVM remains within the standard specification, for fibre-optic link lengths of up to 10km and laser operating temperatures of up to 70°C. Finally, an IEEE 802.11b WLAN demonstrator is presented, allowing antenna remoting over up to 1000m of 62.5/125μm MMF.