The calculating formulas of central wavelength drift based on thin film microstructure and thermal-stress deformation are deduced, the drift of DWDM filter is calculated with these formulas.

• 推导了薄膜微观结构和热应力形变模型上的中心波长漂移计算公式。 建立了滤光片温度稳定性计算分析软件用于计算波分复用滤光片的温漂情况。