Polarization Tracker
The POS-002 Polarization Tracker modules maintain stable output states of polarization (SOP) against input SOP fluctuations.
产品描述
POS-002偏振跟踪器自动将偏振状态（SOP）调整为参考SOP，抵消连续输入SOP变化，与0.9ms没有重置。参考SOP由反馈信号确定，反馈信号可以在内部或外部提供。内部反馈版本（POS-002-I）由光纤挤压末端偏振控制器，直线偏振监视器，数字和模拟电路和控制算法组成。来自偏振监视器的误差信号被反馈回偏振控制器以在输出处维持线性SOP。输出光纤通常是PM光纤，SOP对齐其慢轴。
The external feedback version (POS-002-E) replaces the internal polarization monitor with an external analog electrical feedback signal of the user’s choice, such as a voltage proportional to the degree of polarization (DOP) measured by a polarimeter, the bit-error rate (BER) from a BER chip, the RF spectrum of a detected signal, or the optical power after a polarizer. The controller adjusts the polarization to maximize the feedback signal. The output fiber is typically single mode fiber.
The function is similar to that of the POS-20X instruments, but in compact module form for integration into larger systems.
