With the rapid development of optical communication, there are more and more optical modules on the market. Now when the majority of users choose optical modules, they do not any longer consider just the stability and reliability of optical module itself, instead, they also consider the price and quality and whether it meets the needs of equipment. Besides,the mix of the fictitious with the genuine on the market disables the majority of users to choose. Cozlink will bring you 6 strategies in the choice of optical module, so you no longer have to worry about not choosing a right optical module.

Strategy one: distinguish new optical module and second-hand optical module

The difference between the new optical module and the second-hand optical module: the price of the original optical module is very high. For the second-hand optical module, although its price is relatively low, packet loss often occurs after the use of six months. Then the distinguishing key is that reasons for the packet loss of second-hand optical module - its optical power instability and decreased light sensitivity and other reasons. Then in addition to observing the appearance in the distinguishing method, there is also the use of optical power meter. You can measure whether its optical power is consistent with the parameters on the data manual. If the difference is too large, then it is the second-hand optical module.

Strategy two: select the appropriate optical module type according to the need

There are many types of optical modules, for example, according to the type of fiber: single-mode fiber connector (generally G.652 fiber: fiber diameter of 9um, diameter of 125um), multi-mode fiber connector; according to the binding head of fiber connector: FC, SC, ST, LC, MU, MTRJ, etc., in which FC, SC, ST, LC are currently commonly used; according to pin end face of the binding head of fiber connector: PC, SPC, UPC, APC. This is decided based on actual needs.

Strategy three: notice the compatibility between the optical module and equipment

When purchasing a product, users should notice that in product description, which brand of equipment the product can be used in. At the same time, they should also confirm with the sellers. If necessary, the product should also be tested in the original equipment.

Strategy four: consider the adaptability of optical module’s temperature

The working environment of the optical module is the room or switch. The changes of working temperature will affect the optical power and optical sensitivity of the optical module. The adaptation temperature range of general optical module is 0 ℃ ~ 70℃, while that of industrial optical module is -40 ℃ 85℃.


Strategy five: consider whether the parameters of the optical module meet the needs of equipment

The parameters of the optical module to be considered are: center wavelength, transmission distance and transmission rate.

1.850nm (MM, multi-mode, low cost but short transmission distance, generally only for 500M);

2.1310nm (SM, single-mode, large loss but small dispersion in the transmission process, generally used for transmission within 40KM);

3.1550nm (SM, single-mode, small loss but large dispersion in the transmission process, generally used for long-distance transmission of more than 40KM with the farthest one of 120KM directly without relay);

Strategy six: judge according to the after-sales service life of optical module

Typically, an optical module has a life of five years, and it is difficult to see whether it is good or bad in the first year, and the problem occurs in the second or third year of use. If the service life is only 2-3 years, then you need to carefully select. The manufacturers are in good quality, such as Cozlink, the common one. It has an after-sales service life of five years.
With these six necessary strategies, it seems that you have eyes like the Monkey King and it is no longer difficult for you to find right optical module!