TIA TIA/EIA-455-54B FOTP-54 Mode Scrambler Requirements for Overfilled Launching Conditions to Multimode Fibers
 |
| Purchase Information |
| Use this form to request purchase information on TIA online subscriptions. |
|
|
Document TIA TIA/EIA-455-54B is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
TIA TIA/EIA-455-54B Document Information:
Title
FOTP-54 Mode Scrambler Requirements for Overfilled Launching Conditions to Multimode Fibers
Telecommunications Industry Association
Publication Date:
Aug 1, 1998
Scope:
This procedure describes light launch conditions to the test fiber for
the purpose of achieving a
uniform overfilled launch with a laser diode or other light sources.
While FOTP-54 can be used to
establish overfilled launching conditions for the measurement of
various fiber parameters, it is
principally used in conjunction with FOTP-30 or FOTP-51 for measuring
information carrying
capacity. Light launch conditions are established through the use of a
mode scrambler. The mode
scrambler is positioned between the light source and test fiber to
produce a radiation distribution
overfilling the test fiber core and numerical aperture, irrespective
of the spatial radiation
properties of the light source.
For many mode scrambler designs, however, the launching conditions
produced depend on t h e
source/mode scrambler alignment and the interaction with any
intermediary optics such as connectors
or optical imaging systems. If the source or any component in the
optical system is changed, the
qualification tests must be repeated. When applied to information
transmission capacity
measurements, the overfilled launch gives good measurement
reproducibility; it is not intended to
necessarily give the best bandwidth prediction for concatenated
lengths. Also, a particular light
source/mode scrambler combination may be satisfactory for one size
core diameter and numerical
aperture test fiber, but not for another.
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
