Study of two-mode coexistence in 1550-nm vertical-cavity surface-emitting lasers subject to variable polarization optical feedback

Xue-Li Mu D.D.S.; Chen-Xu Li D.V.M.; Ying-Ni Duan II; Ji-Yun Yang IV; Jian-Jun Chen M.D.

doi:10.1117/12.2585153

2 December 2020 Study of two-mode coexistence in 1550-nm vertical-cavity surface-emitting lasers subject to variable polarization optical feedback

Xue-Li Mu D.D.S., Chen-Xu Li D.V.M., Ying-Ni Duan II, Ji-Yun Yang IV, Jian-Jun Chen M.D.

Author Affiliations +

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117170M (2020) https://doi.org/10.1117/12.2585153
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

We experimentally investigated the two-mode coexistence phenomenon in a 1550-nm Vertical-Cavity Surface-Emitting Laser (1550-nm VCSEL) subject to variable polarization optical feedback (VPOF). First, for the fixed feedback strength, through appropriately adjusting the polarization angel of the optical feedback and bias current, the two-mode coexistence including parallel linear polarized mode and vertical linear polarized mode can be found when the bias current is set about 6.50 mA. Meanwhile, a mapping of polarization mode suppression ratio (PMSR) between two orthogonal linear polarization modes is portrayed in the parameter space of the bias current and polarization angel of optical feedback. Second, for a given bias current, with the increase of feedback strength, the two-mode coexistence region is widely expanded for continually varied polarization angel of optical feedback. At the same time, a mapping of PMSR is also presented in the parameter space of feedback strength and polarization angel. It can be seen that reasonable feedback strength and polarization angle are more conducive to expand the two-mode coexistence parameter region.

Citation Download Citation

Xue-Li Mu D.D.S., Chen-Xu Li D.V.M., Ying-Ni Duan II, Ji-Yun Yang IV, and Jian-Jun Chen M.D. "Study of two-mode coexistence in 1550-nm vertical-cavity surface-emitting lasers subject to variable polarization optical feedback", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117170M (2 December 2020); https://doi.org/10.1117/12.2585153

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