FBG WDM ITU Filter 100/200GHZ
ARTICLE GTL-FBG-WDM-810
FBGs with narrow spectral bandwidth are good elements for filtering optical signals. Such FBGs are widely used as optical add/drop multiplexer in WDM systems. High level of SLSR is allowed to avoid adjacent channel crosstalk in systems. A flat – top reflection spectrum and steep spectral roll-down are a feature these FBGs. Athermal packaging FBG with wavelength stability < 0.16 nm for temperature range 0-70 ⁰C is required for stable operation
FBG CHARACTERISTICS |
ARTICLE GTL-FBG-WDM-810 |
TOLERANCE/NOTE |
Wavelength range, nm |
1530nm-1565nm (C Bands), or custom 1510nm-1580nm |
± 0.1 |
Types of fiber |
Corning SMF-28 |
or custom |
Reflectivity, % |
10% to 99%, Flat-top typical > 99.5% |
2 ÷ 5 |
Bandwidth (FWHM), nm |
100/200 GHz on ITU. For 100GHz: at level -0.5 dB > 0.3 nm and at -20 dB is 0.65 nm |
or custom |
Channel Isolation, dB |
› 20 |
|
Insertion Loss , dB |
< 0.15 |
|
Cladding Mode Loss, dB |
‹ 0.5 (only for cladding mode suppressed fiber) |
custom |
FBG Pigtail Length, m |
≥ 0.5 |
or custom |
FBG Recoating |
None, Acrylate, Polyimide |
or custom |
Thermal Wavelength stability (0 ÷ +70 ֩C), nm |
< 0.16 |
|
Optical Connector |
Bare fiber, FC/APC, LC/APC |
or custom |
Thermal Package |
66mm x 18mm x 12mm |
|