Iridian Spectral Technologies
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Frequently Asked Questions

GFF's are used to flatten or smooth out unequal signal intensities over specified channels in the C-, L-, and U-Bands.

Unequal signal intensities usually occur after an amplification stage, such as EDFA and/or Raman.

GFF's are used in conjunction with gain amplifiers to ensure that the amplified channels all have the same optical gain.

The PPEF is a measure of how close the GFF transmittance is to the desired target curve and the specified signal flatness.

Iridian's proprietary design and deposition technologies result in GFF's that outperform traditional gain flattening filters.

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