Product Types

Gain Flattening Filters

Gain Flattening Filter (GFFs), also known as gain equalizing filters, are used to flatten or smooth out unequal signal intensities over a specified wavelength range. This unequal signal intensity usually occurs after an amplification stage (e.g., EDFA and/or Raman). Typically, GFFs are used in conjunction with gain amplifiers to ensure that the amplified channels all have the same gain.

Iridian excels in designing and fabricating high-performance GFFs that meet the most stringent demands. Ongoing R&D investment in this field ensures that our Gain Flattening Filters remain outstanding in performance as well as the most cost-effective in the industry.

Iridian's proprietary design and deposition technologies result in GFFs that outperform traditional filters. Iridian’s extensive library includes hundreds of different types of GFFs varying in complexity from simple parabolic shapes to very difficult shapes possessing high modulation depths and steep slopes.

Gain Flattening Filters

Custom Gain Flattening Filters
In addition to the standard Gain Flattening Filters above, Iridian can custom-manufacture these filters to your specifications. For more information, please complete this Custom Filter Request for Quotation form.