Data Sheet

1

Bookham Gain Flattening Filters (GFF) leverage the proprietary

Advanced Energetic Deposition (AED) process to produce

the industry’s lowest error GFF. The AED process features

state-of-the-art layer thickness control enabling custom gain

profiles to be closely replicated over multiple production runs.

Low loss custom designs can be made for erbium doped fiber

amplifier (EDFA) bands in the C and L bands. Designs for

Raman-based amplification are also available.

Bookham has developed software design tools to synthesize

custom

gain

profiles

and

assess

their

manufacturing

robustness. When you work with Bookham on your GFF

design, you will have an expert design team on your side.

Gain Flattening Filter Chips

Features:

• Lowest error in the industry; typically 0.2 to 0.4dB

• 1450 to 1640nm wavelength coverage

• High maximum to minimum loss contrast

• Low loss

• Low chromatic dispersion

• Excellent temperature stability

Options:

• Custom gain profiles

Applications:

• EDFA gain flattening for both C-band and L-band

• Raman amplification

• Metro and long-haul DWDM

Compliance:

• GR-1221 qualified with additional high power testing

• RoHS compliant