激光技术, 2014, 38 (1): 124, 网络出版: 2014-06-30
TDM-PON上行信号光功率均衡器的锁模特性
Mode-locking characteristics of TDM-PON upstream traffic optical power equalizers
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 optical communications optical power equalization optical injection-locked Fabry-Perot laser diode distributed feedback semiconductor laser
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。
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.
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. CHEN Xiaowen. Mode-locking characteristics of TDM-PON upstream traffic optical power equalizers[J]. Laser Technology, 2014, 38(1): 124.