π-Phase-Shifted FBG

ARTICLE GTL-FBG-PS-870

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.

Phase shifted FBGs have a very narrow peak within its transmission/reflection spectrum. Phase shifted FBG is a grating with phase defect in the center. While the grating length determines its bandwidth, spectral width of that peak depends on the strength both parts of FBG. Typical FWHM has a value 0.1nm – 0.005 nm. Phase shifted FBGs are used as narrow bandwidth optical filter, for single – frequency fiber lasers creations. The experimental and theoretical transmission spectrum of FBGs is presented in the graph.

 

 

 

 

 

 

 

 

 

 

 

 

 

FBG CHARACTERISTICS

ARTICLE GTL-FBG-PS-870

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

633, 780, 852, 940, 976, 1030, 1060, 1064, 1063 ÷ 1078 (chirp), 1080, 1125, 1150, 1178, 1240, 1270, 1310, 1484,1510 ÷ 1580, 1650, 1874 ÷ 1878 (chirp), 1900, 1908, 1952, 2300

± 0.1 ÷ ± 1 custom request

Reflectivity, %

50 ÷ 99

2 ÷ 5 custom request

Bandwidth (WFHM), nm

0.1 ÷0.8

custom request

Bandwidth of central peak, pm

10 ÷ 100

custom request

SLSR, dB

~ 8

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

 π-Phase-Shifted FBG (Article GTL-FBG-PS-870)

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