Auxora offers passive components for atcive transceivers, such as filter block, mirror and free space isolator. Filter block can be used to combine 4/8 optical channels at the transmitter end as they are launched into a single-mode fiber, then function in reverse at the receiver end for 100G/400G transceiver. Mirror can be used to adjust optical path in the TOSA/ROSA. Isolator can be used to reject the light return.