The UV cutoff wavelength
of annealed specimen is 285, 340, 344, 347, and 348 nm for doses 0, 200, 300, 400, and 500 kGy, respectively.
The trend towards the shortening of the cutoff wavelength
with increasing alkyl chain length could be mentioned; however, if an experimental error for wavelength measurements of [+ or -] 1 nm is taken into consideration, the trend will become uncertain.
The types of measurements discussed included attenuation/ loss, chromatic dispersion, cross talk, cutoff wavelength
, effective area, effective index, four-wave mixing efficiency, index of refraction profile, mode-field diameter, non-linear coefficients, polarization dependent loss and polarization-mode dispersion.
The Schottky barrier detectors have a sharp cutoff wavelength
above 365 nm and require no external filters for most applications.
Figure 6 shows how the cutoff wavelength
of the detector changes with the cooling temperature.
In the range of the near UV (240-400 mm) spectrum, it is also found that light with wavelengths, below 250 mm was absorbed completely in standard specimens, but the cutoff wavelength