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 can be 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 |
2 ÷ 5 custom request |
|
Chirp Rate, nm/cm |
0.01 ÷ 30 |
custom request |
|
Bandwidth (WFHM), nm |
2 ÷ 50 |
custom request |
|
Grating (FBG) Length, mm |
2 ÷ 50 |
custom request |
|
SLSR, dB |
~ 8 |
custom request |
|
FBG Pigtail Length, m |
≥ 0.5 |
or custom |
|
FBG Recoating |
None, Acrylate, Polyimide |
or custom |
|
Tensile Strength, kpsi |
› 100 |
|
|
Optical Connector |
Bare fiber, FC/APC, LC/APC |
or custom |
Chirped FBG (Article GTL-FBG-CR-840)
