Products > Equinox™>DGFF

Boston Applied Technologies' Dynamic Gain Flattening Filter (DGFF) is designed for dynamically gain curve reshaping over the whole band in Erbium Doped Fiber Amplifiers (EDFAs) and power tilt in multi-channel wavelength division multiplexing (WDM) systems. Based on OptoCeramicTM technology, DGFF enables dynamically flattening or tilting the broadband signal in a real-time fashion. BATi's DGFF contains no moving parts and offers high speed, low insertion loss, low polarization dependence loss (PDL), and a wide dynamic range. BATi's DGFF has multi sinusoidal filters. Each sinusoidal filter is a building block that has harmonic frequencies, variable amplitude and variable phase. The combination of multi stages with real time control can form any smooth curve represented by sum of Fourier curves. It has compact and robust package for space, cost saving and performance enhancement.


Precise, high-speed, real time gain control
Excellent optical performance
Low cost, flexible integration
All solide-state construction in a compact package
Attributes1 Performance
Wavelength Range 1525 - 1565nm
Insertion Loss < 3dB(5-stage) 2
Dynamic Range > 20dB
Response <100µs
Polarization Mode Dispersion <0.1ps

Slope Resolution

Extinction Ratio > 22dB (PM pigtail)
Input Power <500mW
Return Loss >55dB
Dimensions3 104 x 16 x 9.5mm3
Operating Temperature Range 0 to 70oC
Storage Temperature Range -40 to 85oC
Unless otherwise specified, all measurements are at 25oC.
2. Insertion loss is less than 1dB for 1-stage, increases 0.5dB for each additional stage.
3. For 5 stages devices, smaller package is available for fewer stages.
6F Gill Street, Woburn, MA 01801
Tel: 781-935 2800

Fax: 781-935 2860