25G BiDi SFP28 单纤双向光模块 1330nm-TX/1270nm-RX 10-40km DOM AO-25GB-SFP28-BD 25G BiDi SFP28 单纤双向光模块 1330nm-TX/1270nm-RX 10-40km DOM AO-25GB-SFP28-BD 低功耗≤1.2W / DFB+PIN