The return loss RL is a measure of the portion of light that is reflected back to the source at the junction. It is expressed in decibel. The higher the RL value in decibels, the lower are the reflections. Typical RL values lie between 35 and 50 dB for PC, 60 to 90 dB for APC and […]
Optical Component
Outline of GR-1221 Test Standards
The GR-1221 standard outlines the environmental and mechanical tests to ensure long term operational performance. The following section provides an overview of each of the test requirements and the importance for compliance. Mechanical Integrity The Mechanical Integrity category consists of three main components which are the Mechanical Shock, Vibration and Thermal Shock. These tests are […]
Optical Splitter
In 2012, a leading market and technology analysts announced the Asia Pacific region (APAC) region leads in the consumption of Planar Lightwave Circuit (PLC) splitter compact devices with 68% of the worldwide value, followed by the American region and finally the EMEA region. The increase of mass FTTx PON network deployment dominates the worldwide PLC […]
Numerical Aperture (NA)
Numerical aperture (NA) is a critical performance specification for multimode fibers. It indicates the maximum angle at which a particular fiber can accept the light that will be transmitted through it. The higher an optical fiber’s NA, the larger the cone of light that can be coupled into its core. Graded-index multimode fibers have a […]
CONNECTOR TERMINATION TECHNOLOGY CHOICES
There are four basic classifications of fiber termination: no-epoxy/no-polish, no-epoxy/polish, epoxy/polish and pigtail splicing. No-epoxy/no-polish connectors No-epoxy/no-polish connectors offer the easiest and quickest termination technology available. Installers only need to strip, cleave, and lock the fiber into the connector body, which also contains a short pre-polished fiber stub in the ferrule. In effect, this is […]
Fiber Optic Connectors
The fiber part of the fiber optic telecommunications system is made up of lengths of optical fiber that must be connected to each other to provide pathways for the optical signals to get from where they start to where you want them to go. Although the connections with the least loss of the signal are […]
Connector Inspection
Light Budget is one of the key items for designing fiber optic network. in order to create a product that will meet application requirements. To adequately characterize the budget loss, the following key parameters are generally considered: Transmitter: Output power, temperature and aging Fiber connections: Active connection and splices Fiber Cable: fiber attenuation and temperature effect Receiver: Detector […]
Wavelength Division Multiplexing (WDM)
WDM Introduction WDM dramatically expands the total capacity of an optical network by enabling a large number of independent wavelength channels to travel within the same network. This core technology allows network capacity to be gradually and cost effectively increased while flexibly allowing multiple generations of transmission technologies to be supported on the same network […]