The invention discloses an optical signal polarization direction determination and power equalization system, which comprises a polarization direction determining part and a power equalization two parts. After a long-distance transmission, with random polarization direction of light signal the arrival of S1, first entered the polarizing direction determined by the power part, lifting, filtering, and then use a polarizing beam splitter is decomposed into parallel to the direction of the orthogonal polarization optical signal S// and vertical optical signal of anomalous S, injection of PMF, affected by polarization fiber self phase modulation spectrum broadening after signal separation, then by using offset filter extracts the optical signal output angle and power balance of the preliminary judgment has been determined, and the polarization direction of the jitter amplitude small power balanced optical signal output 1-1, S' S' 1-2. The optical signal output S' 1-1, S' 1-2 on power balance part of all-optical logic or gate to achieve the system output signal S5, power output signal S5 is mainly determined by the detection of wave power, so as to realize the balance of power in the invention. Also, since the materials required in the invention are all commercially available products, it is also easy to implement the invention.
【技术实现步骤摘要】
【技术保护点】
1.一种光信号偏振方向确定及功率均衡系统,其特征在于包括偏振方向确定部分以及功率均衡两个部分;所述的偏振方向确定部分包括:第一光放大器,用于对输入的波长为λ1的光信号S1进行放大,以使其达到偏振方向确定所需的峰值功率水平;-带通滤波器,其中心波长为λ1,用于对经第一光放大器放大后的波长为λ1的光信号S1进行带通滤波,以抑制光放大器的自发辐射噪声,滤波后输出波长为λ1的光信号S2;-偏振分束器,用于将带通滤波器输出的波长为λ1的光信号S2分解为正交偏振的平行方向光信号S//和垂直方向光信号S⊥;-保偏光纤,其具有高非线性,用于提供强的非线性光谱展宽效应;第-偏振控制器以及第一光环行器,第-偏振控制器调整偏振分束器分解出的平行方向光信号S//的偏振方向,调整后的平行方向光信号S//通过第一光环行器引导入保偏光纤中;调整平行方向光信号S//的偏振方向目的是使其与保偏光纤的主轴对准;第二偏振控制器以及第二光环行器,第二偏振控制器调整偏振分束器分解出的垂直方向光信号S⊥的偏振方向,调整后的垂直方向光信号S⊥通过第二光环行器引导入保偏光纤中;调整垂直方向光信号S⊥的偏振方向目的是使其与保偏光纤的主 ...
【技术特征摘要】
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