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EXHIBIT B <br /> Fiber Specifications/Acceptance Testing <br /> 1. Fiber Specifications. <br /> a. The maximum bi-directional average splice loss shall not exceed 0.15 dB. <br /> b. All splices shall be sealed in water proof splice enclosures. <br /> c. Attenuation at 1310 nm=0.35 dB/km max <br /> d. Attenuation at 1550 nm=0.25 dB/km max <br /> e. Connector loss shall not exceed 0.5dB per connector <br /> f. Fiber will meet or exceed Corning Single Mode Fiber SMF-28 Specifications <br /> g. Event Reflectivity(Minimum ORL)should not exceed 27 dB. <br /> 2. Fiber Acceptance Testing. <br /> • Non-destructive Attenuation Tests(End to End) <br /> + Optical Time Domain Reflectometer Tests(OTDR) <br /> Fiber acceptance testing will be performed to ensure that the fibers will operate within the <br /> parameters of the Specifications set forth in this Exhibit B. <br /> a. More specifically,fiber acceptance testing will include the following: <br /> • Continuity Uniformity Tests: <br /> All fibers shall be tested bi-directionally at 1310 nm or 1550 nm, as applicable,with <br /> an OTDR; the subsequent traces shall be inspected for end-to end continuity and <br /> for uniform attenuation. These traces will be attached to an email or contained on <br /> a removable storage drive. <br /> • Optical Length: <br /> The OTDR will be used to determine the end-to end optical length of the cable. <br /> • Splice Loss: <br /> Splice loss will be measured bi-directionally with an OTDR using the Splice Loss average <br /> method. <br /> • End-to-End Loss: <br /> Using a light source and a power meter, the bi-directional, connector-to-connector <br /> attenuation will be measured for each fiber at 1310 nm and 1550 nm,as applicable. The <br /> acceptance average attenuation per kilometer on a per span basis shall be the <br /> attenuation set forth by this agreement. <br /> 16 <br />