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Tilted Fiber Bragg Grating

Tilted FBG

The same between the Tilted FBG (TFBG) and the standard FBG is that the core refractive index modulation is uniform, the difference is that the TFBG will have multiple mode couplings due to the tilt angle between the grating and the axial direction, mainly including the couplings between the fiber core guided modes, the coupling between the fiber core guided mode and the cladding mode, and the coupling between the fiber core guided mode and the radiating mode, the cladding is infinite. The coupling efficiency between modes and the bandwidth of the leaked light are determined by the tilt angle of the Tilted FBG and the depth of refractive index modulation.

Features of Tilted FBG

  • High Accuracy

  • Easy to Install

  • Easy to daisy-chain

  • Long Lifetime

Application of Tilted FBG

  • Biosensing

  • Chemicals

  • Gas Detection

  • Commercial Sensing

Specification of Tilted FBG

Parameters

Unit

Values

Center Wavelength

nm

1460 ~ 1610

Tilted Angle

--

1-10°

Core mode transmission deep

dB

5~30

FBG Length

mm

10~20

Cladding mode transmission deep

dB

5~30

Recoat

--

Acrylate Or Polyimide

Proof Test

Kpsi

≥100

Fiber Type

--

SMF-28e Or Polyimide Fiber (OFS BF04446)

Fiber Termination

--

Bare Fiber, FC/UPC, FC/APC Or E2000

Pigtail Length

--

Customized

Operating Temperature

-40 ~120


Product Inquiry
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sales@atgrating.com
+86-755-2667-4283