Chaos synchronization and communications of bidirectionally versus unidirectionally coupled bandwidth-enhanced semiconductor lasers
XIAO-DONG LIN1,2,
GUANG-QIONG XIA1,3,
TAO DENG1,2,
JIAN-GUO CHEN2,
ZHENG-MAO WU1,3,*
Affiliation
- School of Physics, Southwest University, Chongqing 400715, China
- Department of Optoelectronics, Sichuan University, Chengdu 610064, China
- State key Lab of Millimeter Waves, Southeast University, Nanjing 210096, China
Abstract
Both bidirectional and unidirectional synchronizations of feedback-induced chaos between bandwidth-enhanced
semiconductor lasers by strongly injection-locked technique are analyzed and compared theoretically, and the related
communication performances of both systems are also preliminarily examined. With extra external optical injection, the
modulation bandwidth of chaos synchronization system can be greatly enhanced about three times under given parameters.
The two systems both possess good robustness to parameters mismatching, where the bidirectional system shows higher
quality synchronization than the unidirectional one within a broad range of mismatched parameters. Both systems can
efficiently transmit high-speed signal.
Keywords
Semiconductor laser, Chaos synchronization, Bidirectional communication, Bandwidth enhancement.
Citation
XIAO-DONG LIN, GUANG-QIONG XIA, TAO DENG, JIAN-GUO CHEN, ZHENG-MAO WU, Chaos synchronization and communications of bidirectionally versus unidirectionally coupled bandwidth-enhanced semiconductor lasers, Optoelectronics and Advanced Materials - Rapid Communications, 3, 11, November 2009, pp.1129-1135 (2009).
Submitted at: Oct. 20, 2009
Accepted at: Oct. 29, 2009