Skip to Main content Skip to Navigation
Theses

Basculement de polarisation, contrôle et synchronisation de lasers à cavité verticale émettant par la surface (VCSELs) soumis à injection optique

Abstract : Vertical-cavity surface-emitting lasers (VCSELs) have competitive advantages with respect to conventional edge-emitting lasers such as the fabrication of dense two-dimensional VCSEL arrays for optical interconnects. VCSELs exhibit intriguing polarization properties which are critical in polarization-sensitive applications. Polarization switching (PS) between two VCSEL s preferential orthogonal linearly polarized (LP) modes may be induced by changing the bias current, temperature or, externally, through orthogonally polarized optical injection. Depending on optical injection parameters, i.e., the injected power and the frequency detuning, injection-locking of the VCSEL can be achieved. We contribute to the study of polarization bistability, polarization switching (PS), injection-locking and transverse mode competition in a VCSEL subject to orthogonal continuous-wave optical injection. We experimentally show and theoretically demonstrate that PS and locking may involve rich nonlinear dynamics including wave mixing, limit cycle, subharmonic resonances or a period-doubling route to chaos. In particular, we analyze the interplay between PS and the underlying nonlinear dynamics, and unveil its bifurcation mechanisms. Our study brings a new insight into the physics of polarization dynamics in externally-driven VCSELs. Chaos synchronization of coupled VCSELs is also investigated. A feedback-induced chaotic light from the master VCSEL is unidirectionally injected into the slave VCSEL. We show that the synchronization quality can be significantly enhanced when chaos involves both orthogonal LP modes. This result is interesting for chaos communication schemes based on VCSELs.
Document type :
Theses
Complete list of metadatas

Cited literature [223 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01752565
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 1:51:19 PM
Last modification on : Friday, April 10, 2020 - 2:12:22 AM

File

Gatare_Gahangara.Ignace.SMZ080...
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01752565, version 1

Citation

Ignace Gatare Gahangara. Basculement de polarisation, contrôle et synchronisation de lasers à cavité verticale émettant par la surface (VCSELs) soumis à injection optique. Autre. Université Paul Verlaine - Metz, 2008. Français. ⟨NNT : 2008METZ004S⟩. ⟨tel-01752565⟩

Share

Metrics

Record views

41

Files downloads

81