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6 essential strategies for selecting optical modules

Date: 2019-11-27 09:16 From: C-light Onclick:
With the rapid development of optical communication, there are more and more optical modules on the market. Nowadays, when selecting optical modules, the masses of users not only consider the characteristics of the stability and reliability of the optical modules themselves, but also consider the price and quality and whether they meet the requirements of the equipment. However, many people will not recognize the good or bad of the optical module, and thus suffer a loss. Here are 6 tips for choosing optical modules, so you don't have to worry about choosing the right optical module.
 
Method / step
1. Identify new optical modules and used optical modules.
 
※ The price of the original optical module is very high. Although the price of the used optical module is relatively low, it often occurs after half a year of use. This is because of its unstable optical power and decreased light sensitivity.
 
※ Use an optical power meter to measure whether its optical power is consistent with the parameters in the data sheet. If the access is too large, it is a used optical module.
 
2. Select the appropriate type of optical module as required.
 
There are many types of fiber optic connectors, FC, SC, ST, LC, MU, MTRJ. Now optical modules have different interfaces. The most common one is LC, followed by SC, which needs to be determined according to actual needs.
 
3. See the compatibility between the optical module and the device.
 
Users should pay attention when purchasing: in the product description, it will indicate which brand of equipment the product can be used in, and at the same time, confirm with the merchant. In order to ensure that customers can purchase optical modules with good performance, C-light Network Communication Co., Ltd. will conduct various tests on each compatible optical module before leaving the factory, including incoming inspection, parametric testing, distance testing, switch testing and aging testing. This ensures compatibility and operability.
 
4. Consider the temperature adaptability of the optical module.
 
The working environment of the optical module is in the equipment room or switch. The change of the ambient temperature affects the optical power and optical sensitivity of the optical module. The temperature range of the ordinary optical module is 0 °C ~ 70 °C, while the industrial-grade optical module. The temperature range is -40 ° C ~ 85 ° C. C-light Network Communication Co., Ltd. will ensure the stability of industrial grade products from hardware requirements, physical cooling and temperature compensation software.
 
5. Consider whether the parameters of the optical module meet the requirements of the device.
 
The parameters of the optical module to be considered are: center wavelength, transmission distance, and transmission rate.
 
※ 850nm (MM, multimode, low cost but short transmission distance, generally only 500M);
 
※ 1310nm (SM, single mode, large loss during transmission but small dispersion, generally used for transmission within 40KM); 
 
※ 1550nm (SM, single mode, low loss during transmission, large dispersion, generally used for long-distance transmission above 40KM, far-reaching direct transmission of 120KM without relay).
 
6. According to the years of the optical module after-sales service to judge.

C-light
 
Second-hand optical modules are used for more than half a year, and there will inevitably be different levels of problems within one year. I hope that when our friends choose to purchase optical modules, it is best to choose a regular manufacturer with quality control capabilities (eg: C-light Network Communication) Cooperation so as not to cause huge economic losses to you and the company.

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