WDM ITU filter 100/200GHZ
Description
Datasheet

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.

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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 (WFHM), 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
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