A launch box is a passive optical component, complementary to OTDRs (Optical Time Domain Reflectometer) for the testing of a fiber optics link. It is made of a coiled optical fiber and it helps eliminate the infamous OTDR “dead zone area”. Simply put, it is vital to the success of a fiber OTDR measurement.
These boxes are the cables placed between the OTDR and the near-end patch panel serving two key purposes:
1) to detect reflections and
2) to identify loss measurement.
The ‘blinding’ of OTDRs for short periods of time come from reflections caused by connector interfaces. A “dead-zone” is the period of time it takes for an OTDR to recover from the ‘blindness’. During a dead-zone period, OTDRs are unable to identify between bends, other connectors, breaks, or shatters. A long cable is necessary to detect the reflection within the dead-zone.
There must be sufficient measurable backscatter, before and after the inter-connection, to measure the optical loss on an OTDR trace.
An OTDR can be prevented from measuring the relative loss through both near-end and far-end patch panel connections with the lack of a dead-zone box. In its absence, there is no measurable backscatter outside the fiber link under test.
On our website, we have seven options under theAFL Fiber Ring products found here: http://bit.ly/2ba8jVy .
- Fiber Optic Center AskFOC: Determining minor or normal slight binder indentation on buffer tubes - October 16, 2017
- Press Release: Fiber Optic Center, Inc. introduces Viavi FiberChek Sidewinder, first fully autonomous handheld inspection and analysis solution for multifiber connectors - October 10, 2017
- Press Release: Fiber Optic Center, Inc. announces the promotion of William Sorell to Shipping Supervisor - October 5, 2017
- Fiber Optic Center AskFOC: Where does dust based end face contamination come from? - August 16, 2017
- Fiber Optic Center AskFOC: What is the highest capacity fiber count an OCETS can handle? - August 9, 2017
- Fiber Optic Center AskFOC: Why is it important to clean both ends of the connector pair? - August 8, 2017
- Fiber Optic Center AskFOC: How residue based contamination cause signal loss between a mated connector pair? - August 2, 2017
- Press Release: Fiber Optic Center, Inc. announces the appointment of Larry Donalds as Business Development, Fiber Design and Manufacturing, Technical Sales - July 24, 2017
- Fiber Optic Center AskFOC: What happens if there are dust particles on one of the connector end faces during the connector mating process? - July 18, 2017
- Fiber Optic Center AskFOC: OCETS: How do I configure the software to work with the chamber? - July 12, 2017