Considerations of optical power meter

Optical power meter is used to measure the absolute optical power, or by a fiber optical power relative to the depletion of the instrument.In the optical fiber system, optical power measurement is the most basic, much like the multimeter electronics;In the optical fiber measurement, optical power meter is a commonly used table heavy load.

Optical fiber connection there are two ways, one kind is a fixed link is a kind of activity, fixed connection is welding, is to use special equipment by discharge, will melt fiber to make two pieces of optical fiber together, advantage is small attenuation, the disadvantage is that complex operation flexibility is poor. Active connection is through the connector, usually on the ODF connection tail fiber, advantage is * simple flexibility good defect is attenuation is large, typically an active connection attenuation is equivalent to a kilometer fiber. The attenuation of the fiber can estimate: including fixed and active connection, optical fiber 0.5 db attenuation per kilometer, if a relatively few active connection, can the value of 0.4 db, pure fiber does not include active connection, can reduce to 0.3 db, the theoretical value of pure fiber of 0.2 db/km;Plan for insurance in most cases in 0.5 as well.Optical fiber test TX and RX must test respectively, in the case of single fiber because using only a fine, of course, need to test again. Principle of single fiber according to the production company is WDM, but I think the possibility of using fiber coupler is higher.What is the optical power meter used to measure the absolute optical power or by a fiber optical power relative loss.In the optical fiber system, much like the multimeter electronics.In the optical fiber measurement, optical power meter is a commonly used table heavy load.By measuring the transmitting terminal machine or the absolute power of the optical network, an optical power meter can evaluate the performance of the light end equipment.Combinations of optical power meter and stable light source, is able to measure the connection loss, continuity test, and help to evaluate quality of fiber optic link transmission.According to the specific application of the user to select suitable optical power meter, should pay attention to the following points.1, select the most optimal probe type and interface type.2 calibration precision and manufacturing procedure, evaluation, and match your range of optical fiber and joint requirements.3, make sure the model and your measurement range and display resolution.4, with direct insertion loss measurement dB role.