Title :
Polarization Mode-Hopping Suppression and Performance Enhancement by Optical Feedback in a Current-Driven Polarization Switching VCSEL
Author :
Cheng, Da-Long ; Yen, Tsu-Chiang ; Chang, Wei ; Kuo, Wang-Chuang ; Kao, Kuo-Sheng ; Hsu, Chuan-Pi
Author_Institution :
SHU-TE Univ., Kaohsiung
Abstract :
This research investigates the effect of optical feedback on the characteristics of current-driven polarization switching (CDPS) in a vertical-cavity surface-emitting laser (VCSEL). Experimental results indicate that the noise of polarization mode-hopping around the polarization switching current can be significantly suppressed by optical feedback. Furthermore, with the assistance of polarization-selective optical feedback, the percentage of successful switching of CDPS approaches to 100% at a driving frequency of up to 50 MHz. While, without optical feedback, that percentage is less than 26%. These results can be used to greatly enhance the performance of CDPS in VCSELs.
Keywords :
laser beams; laser cavity resonators; laser feedback; laser modes; light polarisation; optical switches; surface emitting lasers; current-driven polarization switching VCSEL; optical feedback; performance enhancement; polarization mode-hopping suppression; vertical-cavity surface-emitting laser; Laser feedback; Laser modes; Laser noise; Optical feedback; Optical filters; Optical interconnections; Optical noise; Optical polarization; Surface emitting lasers; Vertical cavity surface emitting lasers; Optical feedback; polarization mode-hopping (PMH); polarization switching (PS); vertical-cavity surface- emitting laser (VCSEL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.909680
