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Wavelength and repetition rate tunable optical pulse source using a chirped fiber Bragg grating and a nonlinear optical loop mirror

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6 Author(s)
Ju Han Lee ; Photonics Res. Center, Korea Inst. of Sci. & Technol., Seoul, South Korea ; You Min Chang ; Young-Geun Han ; Sang-Hyuck Kim
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We experimentally demonstrate a simple and novel scheme for tunable real-repetition-rate multiplication, based on the combined use of fractional Talbot effect in a linearly tunable chirped fiber Bragg grating (FBG) and cross-phase modulation (XPM) effect in a nonlinear optical loop mirror (NOLM). By tuning the group-velocity dispersion of the chirped FBG fabricated with the S-bending method using a uniform FBG, we obtain high quality pulses at pseudorepetition rates of 20∼50 GHz from an original 8.5-ps 10-GHz soliton pulse train. We subsequently convert this pseudorate multiplication into a real-rate multiplication using XPM effect in an NOLM. A wavelength tuning is also achieved over a ∼15-nm range.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 1 )