New model of analysis of semiconductor laser dynamics under strong optical feedback in fiber communication systems

Salah Abdulrhmann; Moustafa Ahmed; Minoru Yamada

doi:10.1117/12.473093

25 July 2003 New model of analysis of semiconductor laser dynamics under strong optical feedback in fiber communication systems

Salah Abdulrhmann, Moustafa Ahmed, Minoru Yamada

Author Affiliations +

Proceedings Volume 4986, Physics and Simulation of Optoelectronic Devices XI; (2003) https://doi.org/10.1117/12.473093
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

We report on a new model of analysis in semiconductor laser dynamics under strong optical feedback (OFB) in fiber communication systems. The model treats the optical feedback due to reflection of the laser light on an external fiber grating as a time-delayed optical field injected to the laser cavity. The model is versatile applicable to an arbitrary strength of optical feedback ranging from weak to strong. The model is applied to stimulate output characteristics and intensity noise in InGaAs lasers pumping fiber amplifiers in a wavelength of 980 nm. Influence of intrinsic fluctuations in the intensity and optical phase of the lasing field on the laser dynamics is taken into account. The time-varying trajectories of the output power are presented over a wide range of the injection current. The simulation results indicated that the laser mainly operates in pulsation under strong optical feedback. Counting the intrinsic fluctuations was found to reduce the OFB-induced instabilities so as to bring the laser faster to its steady state operation. The optical feedback noise is found to be as low as the quantum noise level when the laser is injected well above its threshold level.

Citation Download Citation

Salah Abdulrhmann, Moustafa Ahmed, and Minoru Yamada "New model of analysis of semiconductor laser dynamics under strong optical feedback in fiber communication systems", Proc. SPIE 4986, Physics and Simulation of Optoelectronic Devices XI, (25 July 2003); https://doi.org/10.1117/12.473093

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