TDM-PON上行信号光功率均衡器的锁模特性 |
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引用本文: | 陈晓文.TDM-PON上行信号光功率均衡器的锁模特性[J].激光技术,2014,38(1):124-127. |
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作者姓名: | 陈晓文 |
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作者单位: | 1.福建信息职业技术学院 电子工程系, 福州 350003; |
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基金项目: | 中国台湾省“经济部”科技专案计划资助项目(7301XS2410) |
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摘 要: | 为了减小时分复用无源光网络(TDM-PON)上行信号光波长的飘移,基于TDM-PON上行信号光功率均衡器架构,采用单模激光注入锁定光网络单元(ONU)法布里-珀罗(F-P)激光器(LD)方法,研究了F-P LD输出光波长的锁模特性,包括锁模的范围、驱动电流对锁模特性的影响、锁模前后温度变化引起F-P LD光波长变化情况等。结果表明,当驱动电流为9mA时,F-P LD可被锁模的波长范围为0.38nm,大于ONU上行光波长因环境温度变化5℃而产生的波长位移量0.25nm,F-P LD被锁模可使ONU上行信号的光波长相同且稳定,降低光功率均衡后的噪声。
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关 键 词: | 光通信 光功率均衡 光注入锁定 法布里-珀罗激光器 分布反馈半导体激光器 |
收稿时间: | 2013-06-13 |
修稿时间: | 2013-07-03 |
Mode-locking characteristics of TDM-PON upstream traffic optical power equalizers |
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Abstract: | In order to reduce the wavelength drift of the time division multiplexing passive optical network (TDM-PON) upstream traffic,based on a architecture with optical power equalization of the upstream traffic in a TDM-PON, using single mode laser injection locking Fabry-Perot laser diode (F-P LD) of optical network unit (ONU), the mode-locking characteristics of Fabry-Perot output laser wavelength was discussed, such as the range of injection-locking, the influence of driving current on mode-locking characteristics, the influence of temperature variation on the wavelength with or without injection-locking. The results show that, for such a laser, when the driving current is 9mA, the injection-locking wavelength range is 0.38nm which is larger than the 0.25nm upstream wavelength drift of the ONU caused by the 5℃ change of environmental temperature. The identical and stable wavelength of the ONU upstream traffic and the low noise after the optical power equalization were achieved by the injection-locking F-P LD. |
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Keywords: | optical communications optical power equalization optical injection-locked Fabry-Perot laser diode distributed feedback semiconductor laser |
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