The operating extremes defined in GR-1209 and GR-1221 are –40°C to +85°C and up to 95% relative humidity. GR-1209 and GR-1221 will typically be called out by North American service providers deploying passive optical networks. Some service providers may require their network to function at lower temperatures. In these cases, military specifications (MIL SPECs) requiring –55°C minimum operating temperatures may be called out. | Extreme-Environment Performance Considerations for FTTX Splitter Modules Considerations for FTTX Splitter Modules Extreme-Environment Performance Optical splitter modules used in FTTX networks contain the splitters that make passive optical networks possible. The module physically protects the splitter and provides a means to connectorize the splitter inputs and outputs. Module housing 1xN splitter inside Input Bending Strain Relief Connectors 2 mm Furcation tube Figure 1 Typical FTTX Splitter Module A housing constructed of plastic or metal holds the splitter and provides a means to up-jacket the splitter fibers with 2mm furcation tube for connectorization. A certain number of outputs are connectorized. The input fiber may be connectorized can be a pigtail or can be attached to the module by means of a backplane. Extreme-Environment Performance Considerations of FTTX Splitter Modules Industry Standards Telcordia GR-1209 and GR-1221 standards define the operating requirements for splitter modules in North America. GR-1209 defines basic optical performance requirements such as insertion and return loss polarization-dependent loss PDL and uniformity. GR-1209 also defines short-term environmental and mechanical requirements such as input and output proof strength and side loading and a temperature and humidity profile. GR-1221 defines the splitter modules long-term reliability requirements. GR-1221 requires splitters to go through 2 000 hours of high temperature aging low-temperature aging thermal cycling and humidity aging. GR-1221 also subjects samples to impact and vibration testing. The operating extremes defined in GR-1209 and GR-1221 are -40 C to 85 C and up to 95 relative humidity. GR-1209 and GR-1221 will typically be called out by North American service providers deploying passive optical networks. Some service providers may require their network to function at lower temperatures. In these cases military specifications MIL SPECs requiring -55 C minimum .
