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Why Do Some Power Meters Have Calibration At 1300 Nm While Others Are 1310 Nm? |
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Answer» Convention. The "official" LASER center wavelength is 1310 nm, but vary between 1290 and 1330 nm. LEDs are broad spectral output devices that have outputs over a broad RANGE of wavelengths, roughly centered around 1300 nm. We prefer to just SAY 1300 nm, and so does NIST, who calibrate at this wavelength with a 1300 nm YAG laser. Convention. The "official" laser center wavelength is 1310 nm, but vary between 1290 and 1330 nm. LEDs are broad spectral output devices that have outputs over a broad range of wavelengths, roughly centered around 1300 nm. We prefer to just say 1300 nm, and so does NIST, who calibrate at this wavelength with a 1300 nm YAG laser. |
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