The optical module is a relatively sensitive optical device. When the operating temperature of the optical module is too high, it will cause problems such as excessive transmit optical power, received signal error, packet loss, etc., and even burn the optical module directly in severe cases.
If the temperature of the optical module is too high, the indicator of the corresponding port will be set to red. At this time, we can see a string of numbers—0×00000001, which means that the temperature of the optical module is too high.
The solution is to replace the optical module. After the optical module is replaced, wait for 5 minutes (the polling cycle of the optical module is 5 minutes, and the fault recovery of the optical module is generally required to observe the status after 5 minutes.), observe the port alarm light Whether the status and alarm status are restored.
After the new optical module is replaced, the red light on the port goes out, which means that the optical module fault alarm has returned to normal. According to the operating temperature, optical modules can be divided into commercial grade (0℃-70℃), extended grade (-20℃-85℃) and industrial grade (-40℃-85℃), among which commercial grade optical modules are the most widely used. But in fact, different application environments need to select the optical module of the corresponding temperature level, otherwise it is easy to cause the temperature of the optical module to be abnormal and affect normal use.
Commercial-grade optical modules are suitable for indoor enterprise computer rooms and data center computer rooms, while industrial-grade optical modules are suitable for industrial Ethernet and 5G fronthaul. The former does not require high reliability for optical modules, and the latter has a larger operating temperature range. The safety and reliability requirements are high.