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Effects of dynamics and optical feedback on hybrid III-V/Si semiconductor lasers

Abstract : Photonic Integrated Circuits (PIC) have become key elements to perform broadband transmission and reception functions in optical communication networks. This thesis provides information on hybrid semiconductor lasers (SCL) consisting of an active layer of III-V materials on a silicon-on-insulator (SOI) substrate to jointly explode the emitting properties of III-V layers and the numerous advantages offered by Si for on-chip applications. Due to the significant technological developments in electronics, this hybrid approach is well positioned to meet the high volume requirements for short distance transmission and access networks at a lower cost. However, several challengest still exist such as the lack of effective light sources and isolator-free devices. From a monolithic perspective of a PIC hetereogeneous integration, it is essential to ensure that the parasitic reflections that may stem from multiple locations do not affect the stability of the laser. Specifically, III-V hybrid components on Si appear to have many potential sources of reflections that can create centimeter external cavities in addition to those naturally produced inside the fiber in the order of several meters. Therefore, the work presented herein aims at understanding the behavior of III-V/Si SCLs when subjected to a variation of optical feedback, explores the basics aspects of chaotic dynamics, and investigates potential applications suitable for optical telecommunication systems in an attempt to meet the existing an emerging high speed requirements.
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Submitted on : Tuesday, December 22, 2020 - 4:39:08 PM
Last modification on : Wednesday, June 15, 2022 - 8:10:17 PM

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  • HAL Id : tel-03086448, version 1

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Sandra Cadavid Gomez. Effects of dynamics and optical feedback on hybrid III-V/Si semiconductor lasers. Optics / Photonic. Institut Polytechnique de Paris, 2020. English. ⟨NNT : 2020IPPAT008⟩. ⟨tel-03086448⟩

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