Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 27, Issue 1, Pages 38-41Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2014.2361781
Keywords
Mode-locked fiber laser; cross phase modulation instability; reduced graphene oxide
Funding
- Fundamental Research Funds for the Central Universities [106112013CDJZR120002, 106112013CDJZR160006]
- National Natural Science Foundation of China [61377066, 61405020]
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Cross-phase modulation instability (XPMI) is experimentally observed in a fiber ring cavity with net normal dispersion and mode-locked by long fiber taper. The taper is deposited with reduced graphene oxide, which can decrease the threshold of XPMI due to the enhanced nonlinearity realized by 8-mm evanescent field interaction length and strong mode confinement. Experimental results indicate that the phase matching conditions in two polarization directions are different, and sidebands with different intensities are generated. This phase matching condition can be satisfied even the polarization state of the laser varies greatly under different pump strengths.
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