(800) 473-4237 / 508-992-6464 sales@focenter.com

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.

Helpful Hint Launch Boxes

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 .

Share this:
Kathleen Skelton

About Kathleen Skelton

Kathleen Skelton, as FOC's Director of Strategic Marketing, utilizes her expertise in business development, online strategy, market planning, digital best practices, standard operating procedure development, and content management. A graduate of Curry College, she holds degrees in Communications and Education, English and Psychology. Kathleen resides outside of Boston, MA with her husband and four children. Follow @KATHLEENSKELTON