Open AccessGeneration of 27 GHz flat broadband chaotic laser with semiconductor laser loop
Author(s) -
Feng Ye,
Yibiao Yang,
Anbang Wang,
Yuncai Wang
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.064206
Subject(s) - laser , attenuator (electronics) , diode , optics , semiconductor laser theory , materials science , optoelectronics , broadband , laser diode , physics , distributed feedback laser , amplifier , optical amplifier , attenuation , cmos
Generation of flat broadband chaotic signal is demonstrated experimentally with a semiconductor laser loop, which consists of three laser diodes mainly. The output of each laser diode is injected into its neighbor diode as a loop. The injection light strength is controlled with erbium-dropped optical fiber amplifier or attenuator which is inserted between the diodes, and the detuning is adjusted by changing the temperature of the laser diode. Limited by the bandwidth of the laser diode, the bandwidth of the flat broadband chaotic signal is broader than 27 GHz or even more, and the fluctuation of the spectrum cure is less than 5 dB.