Pulse stabilisation in harmonically FM modelocked erbium fibre ring laser with DFBLD |
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| Authors: | Kim Y.J. Song H.S. Kim D.Y. |
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| Affiliation: | Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea; |
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| Abstract: | A new pulse stabilisation scheme for a harmonically frequency modulated (FM) modelocked erbium fibre ring laser using a distributed feedback laser diode (DFBLD) is presented. More than 65 dB supermode noise suppression in the RF spectrum was obtained with the proposed method. Effective reduction of supermode noise can be accomplished as the DFBLD in the fibre laser acts not only as a fast-gain saturated medium but also as an optical bandpass filter for suppressing supermode noise in a harmonically modelocked laser system. |
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