利用数字超模分布式布拉格反射型激光器、电光调制型偏振控制器、InGaAs光电探测器、高速光开关,并结合高精度的控制检测算法和波分复用技术,设计了一款用于自动测试光无源器件的波长相关损耗和偏振相关损耗等性能指标的检测系统。该系统的光源模块采用OPA569AIDWP芯片作为控制核心,实现优良的功率稳定性控制;功率探测模块采用多档位放大量程控制技术、屏蔽降噪技术并结合软件算法,显著抑制系统噪声,提高功率计的灵敏度和动态范围。该系统测试流程简单,测试精度和稳定性较高,测试偏差小于0.05 dB,不仅提升了光无源器件产线的自动化检测能力,同时降低了复杂仪器设备对人工操作能力的要求,实用性好,且市场前景广阔。

We design an automatic test system based on a digital supermode distributed Bragg reflector laser, electro-optical modulation polarization controller, InGaAs photoelectric detector, high-speed optical switch, and a combination of high-precision control-detection algorithm and wavelength-division multiplexing technology. The proposed system is designed to automatically test performance-related indicators, such as wavelength and polarization dependent losses of passive optical components. To realize excellent control of power stability, the light source module of this system uses the OPA569AIDWP chip as the control core. Multi-grade amplification range control is used for power detection module. Further, shielding noise reduction technology and software algorithms are used to significantly suppress system noise and improve the power meter sensitivity and dynamic range. The test process of the proposed system is simple, highly accuracy, and stable, with a test deviation of less than 0.05 dB, which improves the automatic detection capability of the passive optical device production line and reduces the requirements of manual operation level for using complex instruments. The equipment practicality of the proposed system is good and it shows its broad market prospects.