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, nm | 1000 ÷ 1700 | ± 0.2 ÷ ± 1 custom request | ||
| Types of fiber | Single-Mode, PM | or custom | ||
| LPG Length, mm | ‹ 50 | custom request | ||
| Period, um | 200 ÷ 500 | or custom | ||
| Peak Intensity, dB / % | 10 ÷ 99 | ±5 | ||
| Bandwidth (WFHM), nm | ≥ 10 | ±2 | ||
| Loss free spectral range | custom request | |||
| FBG Pigtail Length, m | ≥ 0.5 | or custom | ||
| FBG Recoating | None, Acrylate, Polyimide, Aluminium, Copper | or custom | ||
| Tensile Strength, kpsi | › 100 | |||
| Optical Connector | Bare fiber, FC/APC, LC/APC | or custom | ||
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