APODIZED - CHIRPED FIBER BRAGG GRATING GTL-FBG-ADG-820 - Get a price quote from FORC-Photonics

Name: APODIZED - CHIRPED FIBER BRAGG GRATING GTL-FBG-ADG-820
Brand: FORC-Photonics
Availability: InStock

Description

The apodized FBGs have special profile of induced refractive index modulation and grating strength along the grating length. Therefore, side lobes level becomes smaller in compared to ordinary gratings. There are a lot of apodization profiles which lead to the optimization of various FBG parameters such as strength, FWHM, SLSR, the value of dispersion. We are using several types of apodization profiles and functions: sine, Gauss, Semi Gauss and Super Gauss.

Specifications

Center Wavelength Range:	633 – 2300 nm
FBG Length:	Custom
Reflectivity:	Not Specified
Reflectivity, %:	5 ÷99
Chirp Rate, Nm/cm:	0.01 ÷ 25
Bandwidth (FWHM), Nm:	0.5 ÷ 50
SLSR, DB:	› 15
FBG REcoating:	None, Acrylate, Polyimide

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Features

The simple one is “sine” type which saves the length of the gratings and provides SLSR around 20dB. Such function is optimal for save of the grating length and value of SLSR level.

The Gaussian type “Gauss” which ensures best SLSR value around -30dB. A lot of applications such as pulsed fiber lasers need special dispersion value and reflection spectrum of the FBG. Gaussian profile of apodization for chirped FBGs allows good results on these applications. The reflection spectrum of apodized chirped FBG with gaussian profile of reflection spectrum and profile of refractive index change along the FBG are presented on the graphs.

The “SuperGauss”apodization profiles are required for “Flat Top”reflection spectra of chirped FBGs. The “SuperGauss” profile of refractive index change along the FBG is presented on the picture.

Applications

Apodized FBGs are useful in sensing applications, signal and Brillouin scatter filtering and others.

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Ships from:

Russia

Sold by:

FORC-Photonics

On FindLight:

since 2020

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Frequently Asked Questions

Can the configuration and parameters of the apodized FBG be changed according to the customer's request?

Yes, the configuration and parameters specified in the specification can be changed according to the customer's request.

What applications are apodized FBGs useful in?

Apodized FBGs are useful in sensing applications, signal and Brillouin scatter filtering, and others.

What are the different types of apodization profiles used in apodized FBGs?

The different types of apodization profiles used in apodized FBGs include sine, Gauss, Semi Gauss, and Super Gauss.

What is an apodized FBG?

An apodized FBG is a fiber Bragg grating with a special profile of induced refractive index modulation and grating strength along the grating length, resulting in smaller side lobes compared to ordinary gratings.

What is the optimal function for saving the length of the gratings and providing SLSR around 20dB?

The optimal function for saving the length of the gratings and providing SLSR around 20dB is the "sine" type.