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Various contamination conditions of connectors

These images describe various contamination conditions.

Illustration

Description

Figure 14: A Clean Connector

Figure 14 shows a clean single mode ceramic endface at 200x magnification.

Note: Sometimes the core is not illuminated.

Figure 15: Clean Multifiber Connector with Acceptable Shadowing

Figure 15 shows a clean multimode MT connector. Notice that there is a small amount of acceptable shadowing along the edge of the cladding.

Note: There is more than one fiber visible at 200x magnification and sometimes the core is not illuminated.

Figure 16: Connector with Dust

Figure 16 shows a connector with dust particles spread across the surface of the endface that needs cleaning.

Figure 17: Connector with Liquid Contamination

Figure 17 shows a connector with liquid contamination that needs cleaning.

Figure 18: Connector with Liquid Contamination

Figure 18 shows a connector with liquid contamination that needs cleaning.

Figure 19: Connector with Alcohol Residue Contamination

Figure 19 shows a connector with alcohol residue that needs cleaning.

Figure 20: Connector with Liquid Contamination

Figure 20 shows a connector with small droplets of liquid contamination that needs cleaning.

Figure 21: Connector with Dry Residue

Figure 21 shows a connector with a dry residue that needs cleaning.

Figure 22: Connector with Oil Residue

Figure 22 shows a connector with an oil residue that needs cleaning.

Figure 23: Connector with Scratches

Figure 23 shows a connector with scratches. These scratches are not detrimental to the endface and does not clean off. But, deep scratches that appear to cross the fiber-optic core can cause signal loss.

Figure 24: Connector with Chipped Cladding and Excessive Epoxy

Figure 24 shows a connector with damage to the cladding. Cleaning cannot remove damaged cladding. A small amount of epoxy around the cladding is allowable, but this shows excessive epoxy around the cladding that does not clean off. This connector must be replaced.

Figure 25: Damaged Connector

Figure 25 shows a 1.25 mm ferrule that has been over chamfered. The connector must be replaced.

Related Tutorials

Patch Cord SC Connector

The SC* connectors used for our patch cords are designed to NTT-SC* standards and are fully compatible with existing SC hardware. Two simplex connectors can be configured into a duplex format by adding a duplex clip. In addition to basic testing, some mechanical and environmental tests per IEC or Telcordia are also performed periodically to guarantee the best quality. For standard patch cords, sampling check is performed on ferrule geometry to ensure high percentage of polished connectors meeting GR-326 requirements. For premium grade, ferrule geometry is tested on all patch cords to meet these GR-326 requirements.Other than standard single mode and multimode fibers, G655, OM2, and OM3

Patch Cord ST Connector

The ST* connectors used in our patch cords employ half-twist bayonet locking mechanism and high quality 2.5mm zirconia ferrules. They are fully compatible with existing ST type hardware. In addition to basic testing, some mechanical and environmental tests per IEC or Telcordia are also performed periodically to guarantee the best quality. For standard patch cords, sampling check is performed on ferrule geometry to ensure high percentage of polished connectors meeting GR-326 requirements. For premium grade, ferrule geometry is tested on all patch cords to meet these GR-326 requirements.Other than standard single mode and multimode fibers, OM2, and OM3 fibers are also available upon request.

Simplex Communication

Simply speaking, simplex communication refers to communication that occurs in one direction only. Two definitions have arisen over time: a common definition, which is used in ANSI standard and elsewhere, and an ITU-T definition. The ITU definition of simplex is termed "half duplex" in other contexts. Simplex is a communications mode in which only one signal is transmitted, and it always goes in the same direction. The transmitter and the receiver operate on the same frequency. When two stations exist and they alternately (not simultaneously) send signals to each other on the same frequency, the mode is technically known as half duplex. However, most amateur radio operators refer
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