The Influence Of Temperature To The Optical Transceiver--ETU-LINK

The influence of temperature to the optical transceiver

August 25. 2017

Optical transceivers are highly temperature-sensitive photoelectric devices. Ambient and internal operating temperature directly change laser bias current, transmit/receive optical power, receiver sensitivity and signal eye quality. This article explains temperature classification of optical modules, root causes of abnormal temperature, and specific performance damage caused by overheating or ultra-low temperature, with deployment selection suggestions for different scenarios.

As a sales of Optical Transceiver Modules should know that the working temperature will influence the parameters of the optical transceiver. When the applied environment temperature of the module is changed, then the working current will change as the temperature changes. At the same time, it will lead to changes in the parameters of the optical transceiver.Thus affecting the normal transmission of the optical transceiver.

Today we are talking mainly about the causes of the high or low temperature of optical modules and their effects.

The temperature of the optical module is divided into commercial temperature, extended temperature and industrial temperature.

Which factors cause the optical module temperature to be too high or too low?

The quality and workmanship is poor

If the optical modules’ quality and workmanship are rough, then it is more common to produce optical module temperature anomalies. Because the performance of such optical modules is unstable, the heat dissipation is also poor.

In order to reduce the temperature anomalies and unnecessary losses, it is suggested to use good performance, quality and workmanship modules.

Using environment is very bad

Optical modules are mainly used in data centers, computer rooms or switches. If applied in other environments, changes in the ambient temperature will change the optical module temperature, the optical power and optical sensitivity are also affected.

Warm reminder: If the using environment of optical module is bad, it is recommended to choose optical module with industrial temperature or extended temperature.

Used optical transceiver

The temperature range of new optical module is usually 0-70 degrees, and the used optical module can not be reached. Therefore, in the environment of too high or too low temperature, the used optical module can not work properly. It is recommended that you use the new optical module.

If the temperature of the optical module is too high or too low, the function of the optical module will be affected and the communication data will be wrong.

So what is the effect of high or too low temperature to the optical module?

Effect of excessive temperature of optical module:

If the working temperature of the optical module is too high, the optical power will become larger, there will be an error in the received signal, or even burn out the optical module, which will cause the optical module to not work properly.

Effect of low temperature of optical module:

If the working temperature of the optical module is too low, it will cause the optical module to be unstable.

If the using temperature is too low, industrial optical module is recommended.

ETU-Link provides industrial, extended, and commercial temperature optical modules. If any interest, welcome to contact us at: sales@etulinktechnology.com.

Quick selection optical module reference:
1.Indoor air-conditioned data center / office switch: Commercial 0~70℃ SFP/SFP+/QSFP28 modules, cost-effective;
5.Outdoor semi-sealed cabinet, southern high-temperature campus equipment: Extended -20~85℃ optical transceivers;
3.5G outdoor fronthaul, industrial equipment, vehicle-mounted network, alpine base station: Industrial -40~85 grade modules with temperature compensation TOSA chips.

All ETU-LINK temperature-series modules pass strict high-low temperature cycling aging test and support SFF-8472 DDM real-time temperature monitoring.