Open AccessImproving chaotic carrier fundamental frequency in VCSELs with optical feedback by strong light injection
Author(s) -
Liu Sheng-Fang,
Guang-Qiong Xia,
Jiagui Wu,
Linfu Li,
Zheng-Mao Wu
Publication year - 2008
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.57.1502
Subject(s) - frequency offset , chaotic , offset (computer science) , semiconductor laser theory , laser , diode , optics , optoelectronics , vertical cavity surface emitting laser , materials science , injection locking , physics , computer science , telecommunications , channel (broadcasting) , artificial intelligence , orthogonal frequency division multiplexing , programming language
In this paper, the influence of the external light injection on the chaotic carrier fundamental frequency of vertical-cavity surface-emitting lasers (VCSELs) with optical feedback have been investigated. The results show that, for the fixed frequency offset between the master laser diode and the slave VCSEL, the chaotic carrier fundamental frequency will generally increase with the increase of injection intensity; the chaotic carrier fundamental frequency can be improved significantly by adjusting frequency offset and injection intensity. For the normalized injection intensity K of 330 and frequency offset 42 GHz, chaotic output with 47.3GHz fundamental frequency can be obtained.