OM1 and OM2 optical fiber is capable of operating at the 820nm wavelength.
Most systems operating at 820nm are short length and relatively low data rate systems. OM1 – 62.5/125 and OM2 – 50/125 optical fibers were designed to handle these parameters. While OM1 and OM2 are specified for operation at the 850 and 1300nm wavelengths, the effective difference in performance between 850nm and 820nm is insignificant. The attenuation difference is approximately 0.04 dB/km and the bandwidth difference is about 2 MHz.km. Manufacturers of optical equipment using / operating at the 820nm wavelength are aware of these differences. If there was a need for higher data rates or increased distances for transmission, the operating specifications would require different optical fiber.