Apodized FBG

ARTICLE GTL-FBG-AD-820

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 Apodized FBGs have special profile of induced refractive index and grating strength along the grating length. Therefore, side lobes level becomes smaller in compared to ordinary gratings. There are a lot of apodized profiles which lead to the optimization of various FBG parameters (strength, FWHM, SLSR). Apodized FBGs are useful in sensing applications, signal and Brillouin scatter filtering and others. Possible value of SLSR for different grating strength is -10dB to -30dB. The reflection spectrum of Apodized HR FBGs is presented in the graph.

FBG CHARACTERISTICS

ARTICLE GTL-FBG-AD-820

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, 650, 852, 976, 1030, 1060, 1064, 1063 ÷ 1078, 1080, 1125, 1150, 1510 ÷ 1580, 1551, 1650, 1874 ÷ 1878, 1900, 1908, 1952, 2300

± 0.1 ÷ ± 1 custom request

Reflectivity, %

0.5 ÷ 99,9

2 ÷ 5 custom request

Bandwidth (WFHM), nm

0.1 ÷ 1.2

custom request

SLSR, dB

› 10 or › 15

custom request

FBG Pigtail Length, m

≥ 0.5

or custom

FBG Recoating

None, Acrylate, Polyimide, Aluminium, Copper

or custom

Optical Connector

Bare fiber, FC/APC, LC/APC

or custom

 Apodized FBG (Article GTL-FBG-AD-820)