The JDSU network expansion module enables the splitting of optical signals in singlemode optical fiber. The standard product comprises one or two input ports and between three and 16 output ports. Designed for optical networking applications, the module uses advanced fused fiber and planar technology to yield ultra-low excess loss and low polarization dependent loss (PDL) in a compact package. Standard wavelength ranges are 1310, 1550, 1585 nm and 1310/1550 nm. A wide variety of housings, including an injection-moulded fiber organizer, 19" rack, and LGX cassette are available and most connector types can be fitted. Two grades of performance are provided: Grade P modules offer the solution to demanding power and PDL budgets through the use of the highest specification couplers. Grade A modules offer a cost-effective answer to standard splitter requirements, including CATV and access networks. In addition to the standard products shown, a wide variety of custom configurations are available for specialized applications. These include alternative housings, wavelengths, and high port counts over 16.