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  • Asia Communications and Photonics Conference/International Conference on Information Photonics and Optical Communications 2020 (ACP/IPOC)
  • OSA Technical Digest (Optica Publishing Group, 2020),
  • paper M4A.110
  • https://doi.org/10.1364/ACPC.2020.M4A.110

Isolating backward Raman signal in high-power narrow-band MOPA fiber laser using CTFBGs

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Abstract

Here, we firstly report the stimulated Raman scattering (SRS) suppression in high-power narrow-band MOPA fiber lasers using chirped and tilted fiber Bragg gratings (CTFBGs). By inserting a CTFBG between the seed laser and the amplifier stage, the backward Raman signal is strongly isolated, meanwhile the forward SRS is well suppressed. Experimental results imply that traditional bulky isolator can be replaced by compact CTFBG, what’s more CTFBG has much lower insertion loss and much higher power capacity.

© 2020 The Author(s)

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