Chirped FBG
ARTICLE GTL-FBG-CR-840
Fiber Bragg Gratings have many applications in optical communication, laser technique and sensing systems. The FBGs are widely used like in-fiber mirrors or optical filters with narrow band optical spectrum. FBGs can be used like a sensitive element for strain and temperature measuring.
The Chirped FBG has linear variation of the FBG period along the grating length. Chirped FBG is manufactured by using non – periodic phase mask. Available chirp rate of the phase mask period is 0.01nm/cm – 30nm/cm. Therefore such FBGs have wide spectrum bandwidth and special dispersion characteristic. Chirped FBGs are useful for gain flattening EDFA and ASE light sources, band stop filters, in ultrafast mode – locked fiber lasers, powerful laser and chromatic dispersion compensation telecom systems. The optical spectrum of high reflection Chirped FBG for powerful fiber laser is presented in the graph.
FBG CHARACTERISTICS | ARTICLE GTL-FBG-CR-840 | TOLERANCE/NOTE |
| Wavelength range, nm | 600÷ 2300 | ± 0.1 ÷ ± 1 custom request |
| Types of fiber | Single-Mode, PM, Double clad, LMA | or custom |
| Wavelength to quick order, nm | 1069 Chirp rate: 2.9 nm/cm, 1081 Chirp rate: 1.02 nm/cm, 1529 Chirp rate: 19.96 nm/cm, 1875. Chirp rate: 4.08 nm/cm | ± 0.1 ÷ ± 1 custom request |
| Reflectivity, % | 5 ÷ 99,9 | 2 ÷ 5 custom request |
| Chirp Rate, nm/cm | 0.01 ÷ 30 | custom request |
| Bandwidth (WFHM), nm | 2 ÷ 50 | custom request |
| FBG Length, mm | 2 ÷ 50 | custom request |
| SLSR, dB | › 15 | custom request |
| FBG Pigtail Length, m | ≥ 0.5 | or custom |
| FBG Recoating | None, Acrylate, Polyimide | or custom |
| Tensile Strength, kpsi | › 100 |
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| Optical Connector | Bare fiber, FC/APC, LC/APC | or custom |
