The output optical power (Output Power) refers to the average output optical power of the light source at the transmitting end of the optical module, also called the output optical power, which can be understood as the intensity of light.
Formula: P(dBm)=10Log(P/1mW)
The unit is W or mW or dBm. (Where W or mW is a linear unit and dBm is a logarithmic unit.) In communications, we usually use dBm to express optical power.
The larger the optical power value, the greater the energy intensity of the optical power emission. But it does not mean that the higher the optical power, the better. Each optical device has a fixed overload optical power, and excessive optical power will increase bit errors. Generally, the optical power of the SFP module is between -2 and -13dbm, and the value range will also change with the transmission kilometers.
There is overload optical power, and there is also sensitivity (minimum optical power communication value). When the transmitted optical power is too small, the received optical power at the receiving end of the module will be less than the receiving sensitivity of the module, and the module cannot receive signal light normally.
When the transmitted optical power is too large, although the attenuator can be added at the receiving end to achieve the receiving optical power range of the module receiving end, the required bias current will also be too large, which will affect the signal transmission quality and the service life of the module.
The above is the introduction of the laser types of SFP modules brought by Shenzhen Shenzhen HDV photoelectric Technology Co., Ltd. e module products produced by the company cover optical fiber modules, Ethernet modules, optical fiber transceiver modules, optical fiber access modules, SSFP optical modules, and SFP optical fibers, etc.
All of these above module products can provide support for different network scenarios. A professional and strong R&D team can help customers with technical issues, and a thoughtful and professional business team can help customers get high-quality services during pre-consultation a
and post-production work. Welcome you to contact us for any kind of inquiry.
