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Connector Loss
Definition: during the calculation of an optical loss budget, the amount of optical loss attributed to
interconnections in the link under test. An interconnection is the junction between two fiber connectors;
e.g. a patch panel or fiber opticadapter. Connector loss is specified by cabling standards that base link
budget calculation on the passive components of the link under test; examples of this type of standard are
the TIA-568 and the ISO IEC 11801.
Units: dB per connection
Calculation: (Number of interconnections) x (dB loss per connection)
Patch
Panel
Link Under Test
Patch
Panel
Link
Under
Test
Patch
Cable
(to active
equipment)
Interconnection
4-6
Extech Reporter
UNIT 4
Fiber Loss
Definition: during the calculation of an optical loss budget, the amount of optical loss attributed to the
optical fiber in the link under test. Fiber loss is specified by cabling standards that base link budget
calculation on the passive components of the link under test; examples of this type of standard are the
TIA-568 and the ISO IEC 11801.
Units: dB per kilometer; loss values are different for different wavelengths and different fiber types
Calculation: (fiber length in kilometers) x (dB loss per kilometer)
Patch
Panel
Patch
Panel
Link Under Test