Twisted tilted fiber Bragg gratings: new structures and polarization properties

Optics Letters
Piotr KisałaPatryk Panas

Abstract

In this Letter, it has been shown that the twisting of TFBGs (tilted fiber Bragg gratings) decreases their sensitivity to the polarization of the input light. It has been proved by a theoretical simulation study that twisting the TFBG by 180° eliminates the sensitivity of the grating to input light polarization changes. We have experimentally proved that our structure produced has an 18 times lower coefficient of variation of transmission for polarization changes than the untwisted TFBG. This Letter also presents a new method for manufacturing the twisted tilted fiber Bragg grating (TTFBG). We have demonstrated the possibility of writing the TTFBG structure twisted by 90° on a fiber with a length of 10 mm. The structure has been further twisted in the other direction by 90°, which is consistent with a structure twisted by 180°. The properties of both structures were determined. Due to the fiber's strength, the TTFBG twisted by 180° has to be 2 cm long. An advantage of the proposed method of producing the TTFBG is that there is a twist of the structure itself after fabrication. This creates new possibilities of using the structure in many applications. This type of grating can be used to reduce the sensitivity to polarization in...Continue Reading

References

Feb 23, 2010·Optics Express·Yu-Chun LuShui-Sheng Jian

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Citations

Dec 28, 2019·Optics Express·Yanxin ZhangTieyi Yan
Apr 1, 2020·Applied Optics·Forough BozorgzadehMostafa Sahrai

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