Experimental study about generation of picosecond pulses with dual-wavelengths and tunable pulse-widths

GUO Zhihua; LUO Chunya; LI Dan; LING Furi

doi:10.7510/jgjs.issn.1001-3806.2016.01.024

LASER TECHNOLOGY > 2016 > 40(1): 109-112. > DOI: 10.7510/jgjs.issn.1001-3806.2016.01.024

GUO Zhihua, LUO Chunya, LI Dan, LING Furi. Experimental study about generation of picosecond pulses with dual-wavelengths and tunable pulse-widths[J]. LASER TECHNOLOGY, 2016, 40(1): 109-112. DOI: 10.7510/jgjs.issn.1001-3806.2016.01.024

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Experimental study about generation of picosecond pulses with dual-wavelengths and tunable pulse-widths

1.
Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science & Technology, Wuhan 430074, China;
2.
Department of Physics and Mechanical Electrical Engineering, Institute of Information Science and Technology, Hubei University of Education, Wuhan 430205, China

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Received Date: November 04, 2014
Revised Date: April 12, 2015
Published Date: January 24, 2016

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Abstract

Abstract

In order to improve the practicability of multi-wavelength optical pulse equipment, a stable dual-wavelength semiconductor fiber ring laser was proposed and demonstrated by using dual-wavelength principle. Effects of ring cavity dispersion, filter pulse-width and modulation depth on output pulse were discussed. Experimental results are that repetition rate of dual-wavelength pulses is 5.0GHz and typical pulse-width is 20ps. Dual-wavelength pulses have good side-mode suppression ratios of 29.1dB (at 1554.75nm) and 29.7dB (at 1557.21nm) with typical output powers of -6.7dBm and -6.1dBm respectively. Output spectra are very stable with peak power fluctuation less than 0.5dB. This study is of great significance for the study of terahertz source and multi-wavelength optical pulse equipment.
- lasers,
- dual-wavelength,
- actively mode-locked,
- semiconductor optical amplifier

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