The Global Multichannel Optical Power Meter Market is expected to grow from USD XX billion in 2019 t
A device used to measure the energy in an optical signal is an optical power meter (OPM). The term generally relates to a device used in fiber optic devices to test average power. Other general-purpose light power monitoring systems are generally referred to as radiometers, photometers, laser power meters, light meters or lux meters. A typical optical power meter comprises a sensing amplifier and screen calibrated sensor. The sensor comprises mainly of a chosen photodiode for the suitable spectrum of wavelengths and energy concentrations. The measured optical energy and fixed wavelength are illustrated on the display panel. A traceable calibration standard such as a NIST standard is often used to calibrate power meters. A traditional optical power meter responds to a diverse light spectrum, however, the calibration relies heavily on wavelength. This is usually not a problem as the test wavelength is usually known, but it does have a handful of drawbacks. First, the user must position the meter at the precise wavelength of the test, and secondly, if other spurious wavelengths are detected, the result will be faulty readings.