Hybrid Brillouin/thulium multiwavelength fiber laser with switchable single- and double-Brillouin-frequency spacing

Kai Hu, Irina V. Kabakova, Simon Lefrancois, Darren D. Hudson, Sailing He, Benjamin J. Eggleton

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

We demonstrate a multiwavelength laser at 2 μm based on a hybrid gain scheme consisting of a Brillouin gain medium and a thuliumdoped fiber. The laser has switchable frequency spacing, corresponding to the single and double Brillouin frequency shifts. In the 20 dB bandwidth, seven lasing channels with a frequency spacing of 0.1 nm (7.62 GHz) and eleven channels with a double-spacing of 0.2 nm (15.24 GHz) are obtained. A wavelength tunability of 1.3 nm is realized for both laser configurations by shifting the pump wavelength. Strong four wave mixing is observed in the double-spacing laser resulting in an improved performance: larger number of channels and better temporal stability.

Original languageEnglish
Pages (from-to)31884-31892
Number of pages9
JournalOptics Express
Volume22
Issue number26
DOIs
Publication statusPublished - 29 Dec 2014
Externally publishedYes

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