3端口滤波片型波分复用器（1310/1490/1550nm）:大宝娱乐推出的3端口滤波片型波分复用器选用性能优良的薄膜滤光片，以包管高品质的光学性能，稳定可靠．滤波片型波分复用器可实现透1490/反1310&1550,透1550/反1310&1490,透1310&1490/反1550，使单根光纤传输容量倍增，还可实现纤双向通信，广泛应用于光纤升级，扩容或引入综合新业务，如广播电视，电信，互联网等方面．

FWDM Module：F-tone Networks Optronics' Micro-Optical WDM utilizes thin film coating technology and proprietary design of non-flux metal bonding micro optics packaging. It provides low insertion loss, high channel isolation, low temperature sensitivity and epoxy free optical path.