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How to Choose Fiber Optic Power Meters—ChangGuang Focus

How to Choose Fiber Optic Power Meters—ChangGuang Focus

What is really a fiber optic energy meter?

The fiber optic energy meter measures how significantly brightness is coming out of the fiber optic cable. it may be utilized to figure out the quantity of brightness becoming generated by an optical source, or the quantity of brightness becoming coupled into an optical receiver. Optical energy is normally measured in dBm, or decibels referenced to 1mW.

These devices evaluate the typical optical power, not the peak power, so they are delicate to the duty cycle within the data transmitted. Their wavelength and energy variety have being appropriately matched to the program becoming measured. Most energy meters utilized to test communication networks are developed to perform at 850nm, 1300nm and 1500nm wavelength ranges and inside energy variety of -15 to -35dBm for multimode links, or 0-40dBm for individual mode links. What sorts of energy meters are available?

Fiber optic energy meters, like DMMs, occur in a wide range of types. The measurement uncertainty of practically all fiber optic energy meters could be the same, limited by the physical constrains of transferring standards with optical connections. Most meters have an uncertainty of +/- 5% or approximately 0.2dB, regardless of what the resolution within the show may be. Lower cost meters or people for area use normally have a resolution of 0.1dB, laboratory meters show 0.01dB, and a resolution of 0.001dB is available on the few specialized meters.

The appropriate resolution for a measurement need to be selected according to the test. Laboratory measurements of low-loss patch cables, connectors and splices can be made to 0.01dB resolution and an uncertainty of 0.05dB or less if superb care is utilized in controlling the test conditions.