GAIN-FLATTENING-FILTER - ITF Optical Technologies

NO RIPPLE ~

NO INDUCED PMD ~

LOW DISPERSION ~

HIGHLY REPRODUCIBLE AND CONSISTENT RESPONSE ~

ITF Gain Flattening Filters, based on ITF All-Fiber®technology, can be custom-designed

to flatten almost any EDFA or Raman gain curve. With a combination of superior optical

properties and packaging reliability, they are ideally suited for high-performance

next generation systems such as 40 Gbps and ultra-long haul transmission systems.

Through advanced design and manufacturing techniques, ITF has perfected the tapered

fiber filter technology to produce clean filters with smooth spectral response maintaining

the inherent properties of the optical fiber. As the integrity of the optical signal

is preserved without any discontinuity or degradation throughout the optical path,

ITF Gain Flattening Filters have unique advantages, such as low insertion loss

and polarization dependent loss, negligible dispersion and back reflection

and no induced polarization mode dispersion.

OPTICAL AMPLIFICATION

GAIN FLATTENING FILTERS

With proprietary accurate modeling tools and a well-controlled manufacturing process,

ITF offers Gain Flattening Filters with highly reproducible and consistent spectral responses.

Furthermore, ITF’s All-Fiber®technology allows for a high degree of design flexibility,

fast turn-around prototyping and large-scale production.

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THE ALL-FIBER® COMPANY

Transmission

[dB]

Wavelength

[nm]

-3.0

-2.0

-1.0

0.0

1.0

-4.0

-5.0

-6.0

-7.0

1530 1535 1540 1545 1550 1555 1560

Typical GFF Response

Target GFF Error Function

TECHNICAL DATA

OPTICAL AMPLIFICATION

GAIN FLATTENING FILTERS

To find out how ITF Optical Technologies

can help meet your need of increased

optical amplification efficiency in high

capacity transmission systems,

on our Gain Flattening Filters.

ALL-FIBER®GAIN FLATTENING FILTER SPECIFICATIONS

Parameter Typical Value

Operating Wavelength Range 1400 to 1700 nm

Maximum Attenuation 20 dB

Component Excess Loss1< 0.5 to 1.0 dB

Error Function1< ± 0.1 to ± 0.25 dB

Polarization Dependent Loss1< 0.1 dB

Polarization Mode Dispersion < 0.05 ps

Optical Return Loss > 60 dB

Directivity > 65 dB

Thermal Stability < 2 pm/°C

Operating Temperature -5 to 70°C

Storage Temperature -40 to 85°C

[1] Exact values depend on gain shape bandwidth and amplitude.

ITF OPTICAL TECHNOLOGIES

175 Montpellier Blvd.

Saint-Laurent (Quebec) H4N 3L2, Canada

Tel.: 514.744.1044 ~ Fax: 514.744.2080

1.888.922.1044