Title :
Two-Mode Coexistence in 1550-nm VCSELs With Optical Feedback
Author :
Tao Deng ; Zheng-Mao Wu ; Guang-Qiong Xia
Author_Institution :
Sch. of Phys. Sci. & Technol., Southwest Univ., Chongqing, China
Abstract :
Two-mode coexistence in 1550-nm vertical-cavity surface-emitting lasers with optical feedback is experimentally investigated in detail. With the increase of the feedback strength, the two-mode coexistence region is enlarged for continually varied current. The feedback delay time has little influence on the two-mode coexistence region distribution under our experimental conditions. Moreover, a mapping of polarization-mode suppression ratio between two linear polarization (LP) modes is presented in the parameter space of the bias current and the feedback strength. In addition, the simultaneous chaos outputs of two LP modes are obtained for a certain two-mode coexistence region.
Keywords :
laser feedback; laser modes; light polarisation; optical chaos; optical delay lines; surface emitting lasers; bias current; linear polarization modes; optical chaos outputs; optical feedback delay time; polarization-mode suppression ratio; two-mode coexistence region distribution; vertical-cavity surface-emitting lasers; wavelength 1550 nm; Chaos; Delays; Laser feedback; Optical feedback; Optical polarization; Vertical cavity surface emitting lasers; 1550nm vertical-cavity surface-emitting laser (1550nm VCSEL); optical feedback; two-mode coexistence;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2452936
