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Enhanced sensitivity to current modulation near dynamic instability in semiconductor lasers with optical feedback and optical injection

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Abstract

We study numerically the response of a semiconductor laser to a small current modulation added to the dc-bias current. The laser is subjected to either optical feedback from an external reflector or optical injection from another laser. We characterize the nonlinear amplification near the Hopf bifurcation leading to the onset of undamped relaxation oscillations.

© 2004 Optical Society of America

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