A Large Mode Area Parabolic-Profile Core Fiber with Modified Segmented in Cladding

In this paper, a novel fiber with a parabolic-profile core and eight segmented trenches in cladding is designed. The designed fiber consists of the segmented trench of low refractive index in cladding and parabolic-profile of high refractive index in the core. The proposed fiber has good bending res...

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Bibliographic Details
Published inPhotonics Vol. 9; no. 10; p. 783
Main Authors Yang, Song, Zhang, Wentao, She, Yulai, Du, Hao, Tu, San
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2022
Subjects
Bend radius
bending loss
Cladding
Electric fields
fiber design
Fiber optics
High power lasers
large mode area
Laser industry
Lasers
Refractivity
single-mode operation
Trenches
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Summary:In this paper, a novel fiber with a parabolic-profile core and eight segmented trenches in cladding is designed. The designed fiber consists of the segmented trench of low refractive index in cladding and parabolic-profile of high refractive index in the core. The proposed fiber has good bending resistance. The eight segmented trenches in the cladding can decrease the refractive index of cladding to increase the difference index between the core and cladding to limit fundamental mode (FM) loss. The proposed fiber can offer an effective single mode (SM) operation with a large mode area (LMA) of 952 µm2 at the small bending radius (R = 10 cm). In addition, the fiber is also suitable under an 18 W/m heat load. The proposed fiber achieves good bending performance, which can be suitable for the compact high-power lasers.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics9100783