保偏光纤波分复用器分为拉锥式(PMWDM)和膜片式(PMFWDM)，具有低插入损耗、高耐受功率、高消光比，双轴工作的特点，主要应用于保偏光纤激光器、保偏放大器、保偏传感系统以及科研应用等领域。

There is two fabrication process for single mode fiber wavelengthdivision multiplexer base on fused biconical taper (FBT) technology and on thin-film filter technology, It is used to combine or separate signals and ideal for fiber laser、fiber amplifier、fiber communication and fiber sensor. Csrayzer’s PMWDM has high extinction、low Insertion、high channel isolation、high return loss、high stability and reliability.