What is an optical power meter?
Individuals are generally acquainted with electronic multimeters which can gauge voltage, current and opposition. An optical power meter looks and works very much like a multimeter. It comprises of a showcase unit and an aligned sensor to gauge the light power communicated in optical strands.
Where is it utilized?
Optical power meters are visible wavelength utilized in the fiber optic correspondence industry. It generally comes in two kinds: work area type and handheld sort.
The work area type has a lot higher goal and is generally utilized in Research and development applications in the lab, fiber optic parts and frameworks producing floors.
The Handheld kind has lower goal and arrives in a convenient handheld impression for simple field use. So it is routinely involved by fiber optic cabling specialists in datacom, telecom and CATV network upkeep.
Working frequency of the power meter
In the handheld optical power market, the most famous frequencies are 850nm, 1300nm, 1310nm and 1550nm. 850nm and 1300nm are for multimode applications. 1310nm and 1550nm are for single mode applications.
It is ideal to pick an optical influence meter which is adjusted for every one of the four frequencies to get the most out from your cash. So you can cover both multimode and single mode network applications.
Discernible adjustment of fiber optic power meters
Power meters are aligned utilizing a recognizable adjustment standard like a NIST standard. NIST research facilities give estimations and principles to U.S. industry.
The optical identifier in a handheld optical power meter is liable for changing over light energy into electronic volt so the circuit board in the instrument can quantify it in like manner. The sort of identifier decides frequency range and its dynamic reach.
Silicon type locators can detect 350nm to 1100nm frequency light. Germanium identifiers can detect 750nm to 1800nm. The most famous InGaAs indicators can quantify 850nm to 1650 nm.
What is dynamic reach?
An optical power meter’s dynamic reach spec lets you know what light power range it can really and accurately measure.
At the point when we discuss light power, we for the most part utilize the unit dBm. As a kind of perspective, 1mW light energy is characterized as 0 dBm. So a 2mW light energy can be characterized in dBm as 10*log10(2mW/1mW) = 3.0 dBm. What’s more, 0.5mW is characterized in dBm as 10*log10(0.5mW/1mW) = – 3.0 dBm.
So a handheld optical power meter with – 50~+3dBm unique reach really can quantify light energy from 0.0001mW to 2mW.
Produces of optical power meters
The handheld power meter market is packed with Agilent, Anritsu, EXFO, Noyes and some other less realized brand names. Yet, this sort of item is really full grown and normally you can securely search around.