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Self‐generating Brillouin fiber laser using highly nonlinear hafnium bismuth erbium‐doped fiber
Author(s) -
Ahmad Aminah,
Cheng Xiau San,
Paul Mukul Chandran,
Dhar Anirban,
Das Shyamal,
Ahmad Harith,
Harun Sulaiman Wadi
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31756
Subject(s) - brillouin zone , materials science , brillouin scattering , fiber laser , optics , erbium , bismuth , laser , optical fiber , laser power scaling , optoelectronics , doping , physics , metallurgy
A compact Brillouin fiber laser (BFL) utilizing a newly developed hafnium bismuth erbium‐doped fiber (HB‐EDF), which functions as both the Brillouin and linear gain media, is realized in the absence of Brillouin pump. It is achieved by the self‐Brillouin generation from a 0.2 m length of HB‐EDF with high nonlinearity in a laser cavity. The self‐generating BFL was obtained in both ring and linear laser cavities. Compared to the ring cavity, the BFL in the linear cavity produced more Brillouin stokes at a lower pump threshold. In the experiment, an eight‐line comb with average spacing of 0.087 nm was generated at the HB‐EDF pump power of 75.27 mW. This compact BFL has total cavity length of less than 0.5 m, and thus, this is the shortest gain medium reported for Brillouin erbium fiber laser generation without using any Brillouin pump.