一种高精度连续可调光衰减器的设计

Design of High-Precision Continuously Adjustable Optical Attenuator

摘要: 随着光衰减器在光通信领域的广泛应用，可调光衰减器由于其精度高、衰减可调等优点备受关注。针对可调光衰减器存在测量范围有限、价格高昂的不足，设计了一款测量范围宽、制造成本低的可调光衰减器。低插入损耗装配技术和自动校准技术，降低了衰减器的插入损耗，提高了生产效率。电机驱动技术使控制方案开环设计成为了可能，大大降低了制造成本。与现有光衰减器相比，其衰减准确度 ≤ 0.1 dB、衰减重复率 ≤ 0.01 dB、插入损耗 ≤ 1 dB，均有不同程度的提高。相比传统闭环设计方案，其开环设计减少了相应反馈环节，制造成本更加低廉，在光衰减器市场中具有广阔的前景。

Abstract: With the wide application of optical attenuators in the field of optical communication, optical attenuators attract much attention due to their high accuracy and adjustable attenuation. In view of the shortage of limited measurement range and high price, a continuous attenuator with wide measurement range and low manufacturing cost is designed. Low insertion loss assembly technology and automatic calibration technology reduce the insertion loss of attenuator and improve production efficiency. Motor-driven technology makes open-loop design of control scheme possible and greatly reduces manufacturing costs. Compared with the existing optical attenuators, the attenuation accuracy ≤ 0.1 dB, attenuation repetition rate ≤ 0.01 dB, insertion loss ≤ 1 dB are improved in varying degrees. Compared with the traditional closed-loop design, its open-loop design reduces the corresponding feedback link, makes the manufacturing cost cheaper and has broad prospects in the optical attenuator market.