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An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems.
Generally, the optical power that optical power meter can measure is ranging from -70dBm to +30dBm. Interface Type: A length of fiber patch cable is usually used to connect the port on optical power meter with the corresponding port of devices for fiber optic testing.