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Why is it necessary to inspect the end faces of optical connectors?

[Download booklet] Effects of contamination on the end faces of optical connectors and countermeasures

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For customers considering the introduction of optical connector end face inspection equipment:

Contamination on the end face of optical connectors accounts for a large proportion of the causes of defects in optical networks.
Contamination on optical connector endfaces that cannot be seen with the naked eye causes increased reflection and loss.

Contamination on optical connector endfaces that cannot be seen with the naked eye causes increased reflection and loss
Figure 1. Condition of a dirty optical connector connection.
Normal optical connector end face
Optical connector end face with dirt (hand oil)
Figure 2. Normal end face of optical connector (left) and defective end face (right).
Change in return loss due to hand oil
Figure 3. Change in return loss due to oily hands

Benefits of observing the end face of an optical connector before connecting it

Observing the end face before connecting can prevent failures due to contamination on the end face.
Scratches and stains on the end face can be visually identified, enabling the identification of the location of loss occurrence and shortening of network downtime.

We recommend the following cycle to maintain a healthy network.

Observe the optical connector end face before connecting the optical connector.

Checking the state of the optical connector end face is essential for maintaining a sound network!



Please take a look at the detailed information we have prepared.

To all optical connection workers and contractors

Highly popular! Optical connector related materials, Part 3

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After submitting your request using the form below, we will send an email titled "Information from NTT-AT CLEANER Download Service" to the email address you registered.
[Booklet] You can download a PDF about the effects of dirt on the end face of optical connectors and how to prevent it.

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Examples of introducing an optical connector end face inspection device.

Nippon Television Network Corporation

Introduced product: FBP-HD3-PA (*1)
*1: FBP-HD3-PA has been discontinued.
As a substitute, we sell the end face monitor series with an automatic judgment function.

NTT-ME Corporation

Introduced product: FBP-NS-P01 (*2)
*2: FBP-NS-P01 has been discontinued.
We are currently selling the successor FBP-NS-P101.