Qualitative analysis of ultra-short optical dissipative solitary pulses in the actively mode-locked semiconductor heterolasers with an external fiber cavity

Alexandre S. Shcherbakov; Joaquin Campos Acosta; Pedro Moreno Zarate; Alicia Pons Aglio

doi:10.1117/12.873912

21 February 2011 Qualitative analysis of ultra-short optical dissipative solitary pulses in the actively mode-locked semiconductor heterolasers with an external fiber cavity

Alexandre S. Shcherbakov, Joaquin Campos Acosta, Pedro Moreno Zarate, Alicia Pons Aglio

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Proceedings Volume 7933, Physics and Simulation of Optoelectronic Devices XIX; 793324 (2011) https://doi.org/10.1117/12.873912
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

An advanced qualitative characterization of simultaneously existing various low-power trains of ultra-short optical pulses with an internal frequency modulation in a distributed laser system based on semiconductor heterostructure is presented. The scheme represents a hybrid cavity consisting of a single-mode heterolaser operating in the active mode-locking regime and an external long single-mode optical fiber exhibiting square-law dispersion, cubic Kerr nonlinearity, and linear optical losses. In fact, we consider the trains of optical dissipative solitons, which appear within double balance between the second-order dispersion and cubic-law nonlinearity as well as between the active-medium gain and linear optical losses in a hybrid cavity. Moreover, we operate on specially designed modulating signals providing non-conventional composite regimes of simultaneous multi-pulse active mode-locking. As a result, the mode-locking process allows shaping regular trains of picosecond optical pulses excited by multi-pulse independent on each other sequences of periodic modulations. In so doing, we consider the arranged hybrid cavity as a combination of a quasi-linear part responsible for the active mode-locking by itself and a nonlinear part determining the regime of dissipative soliton propagation. Initially, these parts are analyzed individually, and then the primarily obtained data are coordinated with each other. Within this approach, a contribution of the appeared cubically nonlinear Ginzburg-Landau operator is analyzed via exploiting an approximate variational procedure involving the technique of trial functions.

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Alexandre S. Shcherbakov, Joaquin Campos Acosta, Pedro Moreno Zarate, and Alicia Pons Aglio "Qualitative analysis of ultra-short optical dissipative solitary pulses in the actively mode-locked semiconductor heterolasers with an external fiber cavity", Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 793324 (21 February 2011); https://doi.org/10.1117/12.873912

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KEYWORDS

Mode locking

Modulation

Active optics

Semiconductors

Nonlinear optics

Solitons

Heterojunctions

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