The optical fiber network system design

The optical fiber network system design optical fiber system design generally follow the following steps:


1. The first to find out what kind of network design, the current situation, how, why, want to use of optical fiber.


2. According to the actual situation of the optical fiber network is to choose the appropriate equipment, fiber optic cable, jump line and connecting with other items. When choosing to should be used as the foundation, and then based on performance, price, and service, origin and brand to determine.


3. According to the requirements of our customers and network type identify lines routing, and drew the wiring diagram.


4. A long route when need accounting system of surplus, according to accounting attenuation formulas below:

Attenuation surplus = launch light power-accept sensitivity-line attenuation-links (dB attenuation of line attenuation = cable length x unit attenuation;
Unit attenuation and optical fiber quality has the very big relations, general single-mode for 0.4 ~ 0.5 dB/km; Multiple models for 2 ~ 4 dB/km.
Connection attenuation including welding attenuation joint attenuation, and welding attenuation and welding method and relevant personnel's quality, general hot melt of 0.01 ~ 0.3 dB/point; Cold fusion 0.1 ~ 0.3 dB/point; Joint attenuation and joint of the quality has the very big relations, generally for 1 dB/points. System generally not less than 4 attenuation allowance dB.


5. Accounting unqualified, should see a circumstance change of design, and then business accounting. This kind of situation may sometimes repeated a few times.