What are the performance parameters of Dalian mining fiber optic junction box?

What are the performance parameters of Dalian mining fiber optic junction box?

The following are some main performance parameters of Dalian mining fiber optic junction box:

1、 Optical performance parameters

insertion loss 

Definition: The degree of power loss when an optical signal passes through a junction box.

Typical value: It is generally required to have the insertion loss as low as possible. For example, the insertion loss of single-mode fiber optic junction boxes is usually less than 0.5dB, while the insertion loss of multi-mode fiber optic junction boxes may be around 0.3-1dB. This ensures that the optical signal will not experience significant intensity attenuation during transmission due to passing through the junction box.

Return loss

Definition: The ratio of reflected light power to incident light power reflects the reflection of light at the connection between the fiber optic cable and the junction box.

Typical value: The return loss is usually required to be greater than 45dB, and in high demand situations, it may need to reach 50dB or even higher. A larger return loss can reduce the interference of reflected light on optical communication systems and improve the quality of signal transmission.

2、 Mechanical performance parameters

compressive strength

Definition: The ability of a junction box to withstand external pressure.

Typical value: In mining environments, the compressive strength needs to be high, generally able to withstand several tons or even higher pressure, such as more than 10kN, to prevent damage from external forces such as rock compression in mines.

tensile strength

Definition: The ability of a junction box to withstand tensile forces.

Typical value: It is usually required that the tensile strength can reach several hundred newtons or even thousands of newtons, such as 500N or more, which is very important in situations where the junction box may be subjected to cable tension.

3、 Environmental adaptability performance parameters

Working temperature range

Definition: The temperature range within which a junction box can function properly.

Typical value: The Dalian mining fiber optic junction box needs to adapt to the complex temperature environment underground, with a working temperature range usually around -40 ℃ -+80 ℃, to ensure normal operation at different depths and seasonal changes in the mine.

Protection level

Definition: Measuring the protective ability of a junction box against external foreign objects such as dust and moisture.

Typical values: Mining environments require a high level of protection, with common protection levels being IP65 or even IP68. IP65 means it can completely prevent dust from entering and prevent water spray from all directions without damage; IP68 has higher requirements in terms of waterproofing and dust prevention, and can work normally when immersed in water for a certain period of time and under pressure conditions.

4、 Fiber optic adaptation parameters

Can accommodate the number of optical fibers

Definition: The number of fiber cores that a junction box can connect and accommodate.

Typical values: Depending on different models and application scenarios, the number of optical fibers that can be accommodated varies from 4 cores, 8 cores to 48 cores or even more, to meet the communication needs of mines of different scales.

Fiber optic type adaptability

Definition: The compatibility of junction boxes with different types of optical fibers (such as single-mode and multi-mode).

Typical situation: High quality mining fiber optic junction boxes should be able to adapt to both single-mode and multi-mode fibers, such as compatible with G.652 single-mode fibers and 50/125 μ m, 62.5/125 μ m multi-mode fibers, providing users with more choices and flexibility.