Long-period fiber gratings (LPFG)
Description
Datasheet
Video

An LPFG couples light that is propagating along the fiber core of a Single Mode fiber into cladding modes. LPFGs operate in transmission. There is no reflected signal. LPFGs are widely used as optical filters. It is essential for systems sensitive to reflection. LPFG written in a birefringent fiber may also be used as a polarization-depended absorbing spectral filter. Additionally, pair of 50% LPFGs can be used to form in fiber Mach-Zehnder interferometer.

 

FBG CHARACTERISTICS

ARTICLE GTL-LPFG-810

TOLERANCE/NOTE

Wavelength range, nm1000 ÷ 1700± 0.2 ÷ ± 1 custom request
Types of fiberSingle-Mode, PMor custom
LPG Length, mm‹ 50custom request
Period, um200 ÷ 500or custom
Peak Intensity, dB / %10 ÷ 99±5
Bandwidth (WFHM), nm≥ 10±2
Loss free spectral rangecustom request
FBG Pigtail Length, m≥ 0.5or custom
FBG RecoatingNone, Acrylate, Polyimide, Aluminium, Copperor custom
Tensile Strength, kpsi› 100
Optical ConnectorBare fiber, FC/APC, LC/APCor custom
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