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Generation of wavelength‐tunable optical short pulses with a highly improved side‐mode‐suppression ratio over a large wavelength‐tuning range
Author(s) -
Chen J. W.,
Wang D. N.,
Li Z. N.
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20998
Subject(s) - materials science , optics , optical amplifier , optical circulator , optoelectronics , wavelength , circulator , laser , microwave , wavelength division multiplexing , fiber bragg grating , physics , quantum mechanics
We have developed a self‐seeding system to generate wavelength‐tunable optical short pulses with a highly improved side‐mode‐suppression ratio (SMSR) over a large wavelength‐tuning range. The external cavity of the gain‐switched Fabry–Pérot laser diode consists of two fiber Bragg gratings (FBGs) connected in series, an erbium‐doped fiber amplifier (EDFA), an optical coupler, and two circulators. The two gratings exhibit distinct peak wavelengths and each can be tuned across nearly the 20‐nm range. The system is simple and efficient and the side‐mode‐suppression ratio achieved is about 40 dB over a 24‐nm wavelength‐tuning range. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 395–399, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20998