Title :
Dynamic Characteristics and Linewidth Enhancement Factor of Quantum-Dot Vertical-Cavity Surface-Emitting Lasers
Author :
Peng, Peng-Chun ; Lin, Gray ; Kuo, Hao-Chung ; Yeh, Chao-En ; Liu, Jui-Nung ; Lin, Chun-Ting ; Chen, Jason Jyehong ; Chi, Sien ; Chi, Jim Y. ; Wang, Shing-Chung
Author_Institution :
Dept. of Electro-Opt. Eng., Nat. Taipei Univ. of Technol., Taipei
Abstract :
This study explores the relative intensity noise characteristics of quantum-dot vertical-cavity surface-emitting lasers (QD VCSELs). The resonance frequency and eye diagram are presented. The linewidth enhancement factor (alpha factor) of QD VCSEL is also investigated experimentally. The values of alpha factor were measured to be between 0.48 and 0.60. Moreover, a photonic RF phase shifter is examined using the QD VCSEL. A phase shifter with a total phase shift of 2pi was demonstrated. These investigations and demonstrations will be useful in the field of QD VCSEL.
Keywords :
laser beams; laser cavity resonators; laser noise; microwave photonics; optical phase shifters; quantum dot lasers; surface emitting lasers; QD-VCSEL; linewidth enhancement factor measurement; photonic RF phase shifter; quantum-dot laser; relative intensity noise characteristics; vertical-cavity surface-emitting laser; Linewidth enhancement factor; quantum dot (QD); relative intensity noise (RIN); vertical-cavity surface-emitting laser (VCSEL);
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2008.2011375
