"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

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

  1. School of Physics, Southwest University, Chongqing 400715, China
  2. Department of Optoelectronics, Sichuan University, Chengdu 610064, China
  3. 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