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

• Published in: IEEE photonics technology letters Vol. 17; no. 1; pp. 34 - 36
• Main Authors: Lee, Ju Han, Chang, You Min, Han, Young-Geun, Kim, Sang-Hyuck, Chung, Haeyang, Lee, Sang Bae
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2005; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bragg gratings; Chirp modulation; Fiber gratings; Fiber nonlinear optics; Gratings; Mirrors; Modulation; Multiplication; Nonlinearity; Optical fibers; Optical modulation; optical propagation in dispersive media; optical propagation in nonlinear media; Optical pulses; optical signal processing; Optical solitons; Optical tuning; Solitons; Talbot effect; Tuning; Wavelengths
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2004.838289

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/spl sim/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 /spl sim/15-nm range.