How do technicians know the specific type of single-mode fiber used in a particular project?

The project's specification records are crucial for technicians to identify the specific type of single-mode fiber used in a project because these records provide detailed information about the materials and standards outlined during the planning phase. Specifications typically include the necessary data about fiber types, including their core diameter, refractive index, and applicable standards, ensuring that technicians are using the appropriate products that meet the project requirements.

Consulting the project’s technical manual may provide some insights, but it is the specification records that are the definitive source for the type of fiber installed. While fiber color coding charts can help in identifying certain types of fibers based on color markings, they do not offer comprehensive information regarding the specific type or grade of fiber used in a given project. Conducting visual inspections may help technicians verify the presence and general condition of fiber, but without the specification records, they would lack the precise details needed to determine the exact characteristics of the fiber employed in that particular installation.