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Bandwidth-enhanced chaos synchronization in strongly injection-locked semiconductor lasers with optical feedback
Y Takiguchi1, K Ohyagi, J Ohtsubo
1Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu, 432-8561 Japan. tajohts@ipc.shizuoka.ac.jp
Optics Letters
|March 28, 2003
Abstract:
Bandwidth-enhanced chaos synchronization in strongly injection-locked semiconductor lasers with optical feedback is numerically studied based on laser rate equations. The bandwidth of the chaotic carrier frequency in a semiconductor laser with optical feedback is expanded roughly three times by strong optical injection compared with the bandwidth when there is no optical injection. Using a bandwidth-enhanced semiconductor laser as a chaotic transmitter and receiver, we synchronized transmitter and the receiver lasers in a complete chaos synchronization scheme.