This is the optical film which was applied to surface of the end of fiber to suppress the loss which influences the characterstic of light module to the minimum.A catoptric light measure is made the wide wavelength area to the L band from the C band. Features Because we can accomodate the wavelength band you specify,you choose according to the use. We can supply to you quickly because we are able to prepair in the form of pigtail. Example of external appearances Example of reflectance characteristics Specifications Wave length(nm) Reflectance(%) 9301030 0.5 or less 12601360 0.5 or less 14301530 0.5 or less 15001600 0.5 or less 9751000&15201570 0.5 or less Please refer to us for frequencies other than the above.