The Gen II Ultra Wideband Bias Tee is designed to meet the high electrical performance requirement of Passive components in Optical Communication Networks. Given a broader bandwidth of frequency coverage up to 110 GHz with low Insertion loss and very high Return Loss, makes it ideal to use in bias Optical Modulators and Broad Band Data Drivers. It's fast Rise Time and Flat Group Delay performance allows extremely accurate measurements within a laboratory environment. The Bias Tee comes with a standard in V Connector or W1 connector and assures excellent impedance match across wide bandwidth. The W1 Bias Tee features additional options for RF input and output. W255MF has a W1(m) RF input and W1(f) output. The W255FM has a W1(f) RF input and W1(m) output. The DC Signal can be applied or extracted from the Bias Tee through the SMC Connector at the third port. As with our other Bias Tees, this Bias Tee also comes with a one year warranty.