Attachment C Fiber Testing Specifications.pdf
PDF 146 KB Posted
- Attached to
- Fiber Construction Services - North Region
- Solicitation number
- 26-448DOIT-TELEC-B-48349
- Issued by
- Jefferson County, Illinois
About this file
This is an attachment to a Request for Proposal issued by the Illinois Department of Innovation and Technology for Fiber Construction Services in the North Region (B-48349), specifically detailing fiber testing requirements and specifications for dark fiber installation and acceptance.
The contractor is required to install optical fiber that meets or exceeds Corning Single Mode Fiber SMF-28 specifications, with maximum attenuation rates of 0.35 dB/km at 1310 nm and 0.25 dB/km at 1550 nm. Splice loss must not exceed 0.15 dB bi-directionally, connector loss must not exceed 0.5 dB per connector, and event reflectivity should not exceed 27 dB. All splices must be sealed in waterproof enclosures. The contractor must conduct comprehensive fiber acceptance testing including non-destructive attenuation tests and Optical Time Domain Reflectometer (OTDR) tests performed bi-directionally at both 1310 nm and 1550 nm wavelengths to verify continuity uniformity, optical length, splice loss, and end-to-end loss measurements. Testing methodology includes continuity uniformity testing using OTDR traces, optical length determination, bi-directional splice loss measurement using the splice loss average method, and end-to-end connector-to-connector attenuation measurement using industry-accepted laser sources and power meters.
Out-of-specification test results may be accepted if they do not affect transmission capability based on prevailing telecommunications industry standards or create a significant possibility of outage. Prior to state acceptance of the project, the contractor must deliver comprehensive documentation including technical specifications of all optical fiber cable and equipment, route details in ESRI shape file format showing demarcation points, route paths, splice locations, and aerial or buried fiber designation, fiber acceptance test results in PDF, XLS, and CSV formats documenting all testing at 1310 and 1550 nm, and 24-hour contact numbers for the contractor's Network Operation Control Center. Updated maps may be provided to the customer upon request, not to exceed two times in any 12-month period.
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Illinois Department of Innovation and Technology B-48349 Fiber Construction Services - North Region
Attachment C – Fiber Testing
Fiber Testing
1. Fiber Specifications
a. The maximum bi-directional average splice loss shall not exceed 0.15 dB.
b. All splices shall be sealed in water proof splice enclosures.
c. Attenuation at 1310 nm = 0.35 dB/km max
d. Attenuation at 1550 nm = 0.25 dB/km max
e. Connector loss shall not exceed 0.5 dB per connector
f. Fiber will meet or exceed Corning Single Mode Fiber SMF-28 Specifications
g. Event Reflectivity (Minimum ORL) should not exceed 27 dB.
2. Fiber Acceptance Testing
Contractor will conduct the following tests as part of its Acceptance Test Plan:
• Non-destructive Attenuation Tests (End to End)
• Optical Time Domain Reflectometer Tests (OTDR)
Fiber acceptance testing will be performed to ensure that the fibers will operate within the parameters of the Specifications set forth below.
a. More specifically, fiber acceptance testing will include the following:
• Continuity Uniformity Tests:
All fibers shall be tested bi-directionally at 1310 nm or 1550 nm, as applicable, with an
OTDR; the subsequent traces shall be inspected for end-to end continuity and for uniform attenuation. These traces will be attached to an email or contained on a removable storage drive.
• Optical Length:
The OTDR will be used to determine the end-to end optical length of the cable.
• Splice Loss:
Splice loss will be measured bi-directionally with an OTDR using the Splice Loss average method.
• End-to-End Loss:
Using a light source and a power meter, the bi-directional, connector-to-connector attenuation will be measured for each fiber at 1310 nm and 1550 nm, as applicable. The acceptance average attenuation per kilometer on a per span basis shall be the attenuation set forth by this agreement.
a. The end-to-end value as measured with an industry-accepted laser source and power meter should have an attenuation rating of less than or equal to the following:
(1) At 1310 nm: (0.35 dB/km x km of cable) +
(number of connectors x 0.50) +
(number of splices x 0.10)
(2) At 1550 nm: (0.25 dB/km of cable) +
(number of connectors x 0.50) +
(number of splices x 0.10)
b. Contractor loss / attenuation objective for each fiber optic splice is 0.10 dB (with a 0.15 upper limit) when measured in one direction with an OTDR test set (excluding connector loss, which is typically 0.50 dB per connector).
3. Out-of-Spec Testing
Test results outside the specifications listed above shall be noted, but shall not preclude acceptance of a fiber if the out-of-spec condition does not affect transmission capability (based on use of then-prevailing telecommunications industry standards applicable to equipment generally used with the relevant type of fiber) or create a significant possibility of an outage.
4. Documentation
Contractor shall deliver to the Customer the following documentation (the “Deliverables”) regarding the as-built condition of the Dark Fiber:
a. Technical specifications of the optical fiber cable and other equipment used in installing and providing the Dark Fiber.
b. Route details in electronic map format in ESRI shape files. At a minimum, the maps will show demarcation points, route, existing splice locations and indication of whether fiber is aerial or buried. Contractor shall provide updated maps to Customer upon request, not to exceed two times in any 12-month period.
c. ‘Fiber Acceptance’ test results in the following formats: PDF, XLS and CSV (Nothing all testing at 1310 and 1550).
d. 24-hour telephone numbers for Contractor Network Operation Control Center.
Deliverables shall be supplied before the State will consider job acceptance.
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