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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. CITY Contractor will conduct the following tests as part of its <br /> Acceptance Test Plan: <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, <br /> with an OTDR; the subsequent traces shall be inspected for end-to end <br /> continuity and for uniform attenuation. These traces will be attached to an <br /> email or contained on 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 <br /> average 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. <br /> The acceptance average attenuation per kilometer on a per span basis shall be <br /> the attenuation set forth by this agreement. <br /> a. The end-to-end value as measured with an industry-accepted laser source <br /> and power meter should have an attenuation rating of less than or equal to <br /> the following: <br /> (1) At 1310 nm: (0.35dB/km x km of cable) + <br /> 22 <br />