![Icon [all products]](https://www.thunder-link.com/tl-content/uploads/2022/05/Icon-all-products-1.svg "Icon [all products]"){kind=icon}
All productsYou can calculate the optical attenuation based on the actual optical power.
The principle for determining whether an attenuator needs to be configured at a transmission point is as follows:
If P(out)max – S x Attenuation coefficient > P(in)max, an attenuator needs to be configured.
The optical attenuation is calculated in the following formula: T= P(out)max – S x Attenuation coefficient – P(in)max.
Table 1 Description of the Paramater
|
Name |
Description |
| P(in)min | maximum transmit optical power. |
| P(out)max | transmission distance. |
| S | transmission distance. |
| A | attenuation coefficient. Note that the attenuation coefficient is related to optical fiber types and wavelengths. By default, the attenuation coefficient of a 1310-nm wavelength in a G.652 fiber is 0.45 dBm/km or 0.4 dBm/km; the attenuation coefficient of a 1550-nm wavelength in a G.652 fiber is 0.235 dBm/km or 0.25 dBm/km. |
| P(in)max | maximum receive optical power, that is, minimum overload point. |
Table 2 Reference for configuring an attenuator:
| BOM Number | Description | P(out) | P(out) | P(in) | P(in) |
| max | min | min | max | ||
| 34060276 | eSFP,1310nm,STM1,LC,SM,15km | -8 dBm | -15 dBm | -31 dBm | -8 dBm |
English
العربية
Български
Français
Deutsch
Italiano
Polski
Português
Русский
Español