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The grating period of Chirped FBG is not constant, but varies along the axial direction. Different grating periods correspond to different Bragg reflection wavelengths, and incident light of different wavelengths is reflected at different positions of the chirped fiber grating, so that the light of different wavelengths will produce an optical path difference after being reflected by the chirped fiber grating. Using this effect of linearly chirped fiber bragg grating , the dispersion compensation of different wavelength signals in long-distance fiber communication can be effectively realized.

Features Of China Chirped Fiber Bragg Grating
Wide Bandwidth

Low Insertion Loss

High Reflectivity

Application Of Chirped FBG
Gain Flattening Filter

Dispersion Compensation

FTTH

CWDM System

ASE filtering, noise suppression

WDM 1300/1550nm band rejection filter

Specifications Of Chirped FBG

ParameterUnitValue
Center Wavelengthnm1064, 1530, 1550, 1575, 1590, 1625, 1650
Wavelength Tolerancenm+/-0.25
Reflectivity%10~99
Bandwidth (FWHM)nm10 (1-15)
SLSRdB>10
Insertion LossdB<0.5
FBG Recoating--None, Acrylate, Polyimide, or custom
Tensile Strengthkpsi>100
Fiber Type--Single-Mode
Fiber Coating--Acrylate, Polyimide, or custom
Pigtail LengthmStandard 1m both ends, or custom
Optical Connector--Bare Fiber, FC/APC, SC/APC, or custom

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