Femtosecond pulse delivery using a chirped long-period grating of multi-mode fiber for mode conversion

Yao, Jinrong; Zhan, Li; Wang, Y.X.; Li, H.G.; Luo, Shuai; Xia, Yuxing

doi:10.1080/09500341003714130

Cited by 6 publications

(1 citation statement)

References 30 publications

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“…Ke et al analyzed the phase-shifted LPFG theoretically and the results showed that the phase-shifted LPFG can increase the working bandwidth, but it will sacrifice the conversion efficiency [29]. Yao et al analyzed and optimized the transmission spectra of chirped LPFG and got a 60 nm 10 dB bandwidth in simulation [30]. However, the introduction of chirp in LPFG will cause a reduction in the coupling efficiency, although this method can achieve a broader working bandwidth.…”

Section: Ieee Photonics Journalmentioning

confidence: 99%

Ultra-Broadband Mode Converter Using Cascading Chirped Long-Period Fiber Grating

et al. 2019

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We propose and demonstrate an ultra-broadband mode converter based on a cascade chirped long-period fiber grating (CLPFG) written in a two-mode fiber. The mode converter can convert fundamental mode (HE even 11 and HE odd 11 modes) into the first order cylindrical vector (CV) modes (TE 01 , TM 01 , HE even 21 and HE odd 21 modes). We design and analyze the mode conversion characteristics of this kind of grating in theory. The simulation results show a 10 dB bandwidth of 170 nm and 20 dB bandwidth of 145 nm can be achieved by optimizing the parameters of the CLPFG. In the terms of experiment, we achieve the broadband mode converter with 10 dB bandwidth of 170 nm from 1472 nm to 1642 nm.

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Section: Ieee Photonics Journalmentioning

confidence: 99%