Short monolithic dual-wavelength single-longitudinal-mode DBR phosphate fiber laser


  • Xiong, Lingyun
  • Hofmann, Peter
  • Schülzgen, Axel
  • Peyghambarian, N.
  • Albert, Jacques




We propose and demonstrate a 5-cm-long monolithic dual-wavelength single-longitudinal mode distributed Bragg reflector (DBR) all-phosphate fiber laser. Strong UV-induced fiber Bragg gratings are directly written in highly Er/Yb codoped phosphate fiber. The separation between gratings is selected as 1 cm to only excite two longitudinal modes in the DBR cavity. By exploiting the spatial hole burning effect and the polarization hole burning effect, stable narrow-linewidth dual-wavelength lasing emission with 38 pm wavelength spacing and a total emitted power of 2.8 mW is obtained from this DBR fiber laser. A microwave signal at 4.58 GHz is generated by the heterodyne detection of the dual-wavelength laser.


OSA Publishing

Peer Review: 

Published in Peer Reviewed Journal

Faculty Name: 

Faculty of Engineering and Design

Department Name: 

Department of Electronics

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