As an optical communication practitioner, you should understand that the operating temperature of the optical module will affect the parameters of the entire optical module. According to the working temperature of optical modules, optical modules are divided into industrial grade and commercial grade. So what are industrial grade and commercial grade? What are the differences between them?
1. Working temperature
Commercial grade optical module: 0~70℃
Industrial grade optical module: -40~85℃
2. Application environment
Commercial-grade optical modules: are the most common and widely used products on the market, such as indoor computer rooms.
Industrial-grade optical module: It is used in a relatively harsh environment and has a large working temperature difference. Its most basic working condition is that it must meet the temperature requirements of minus 40 degrees and minus 85 degrees. Such as remote mountainous areas, tunnels, etc.
3. Chip withstand temperature
Commercial grade optical module: TO-CAN can withstand the temperature range of 0~70℃
Industrial optical module: TO-CAN can withstand the temperature range of -40~85℃
4. Test method
Commercial-grade optical modules: for normal temperature aging, the high temperature can only withstand a maximum of 70 degrees, and the ideal working temperature is 0~70 °C.
Industrial-grade optical modules: High and low temperature aging tests are required, and the temperature can withstand a maximum of 85 degrees. The modules can work stably in an environment below 0 °C.
5. Import of temperature compensation software
Industrial-grade optical modules must import temperature compensation software, which is used to control the stable working current supply of the optical module. When the temperature changes, the temperature compensation software will play its role.
To do temperature compensation, it will take a lot of time for technicians to calculate its slope with every rise or fall of 5 degrees (or 10 degrees) as a node, and then write the result to the corresponding IC (chip) of the optical module. ), the work required our technicians to spend at least a few hours or more before cycling old cargo boxes at high and low temperatures. The increase in raw material and manufacturing costs is the reason for the high price of industrial-grade optical module products. Comparison chart of working current after and before temperature compensation:
E-Tianguang Communication not only makes great efforts in the selection of raw materials for all industrial-grade optical module products, but also makes articles on technology (temperature compensation) to ensure that our industrial-grade products maintain normal transmission work in harsh environments. Thank you for your patience in reading, I hope this article can help you!