Title :
Equivalent λ/4 phase shift to improve the single longitudinal mode property of asymmetric sampled Bragg grating semiconductor laser
Author :
Zhou, Yating ; Shi, Yuechun ; Li, Simin ; Li, Jingsi ; Chen, Xiangfei
Author_Institution :
Microwave-Photonics Technol. Lab., Nanjing Univ., Nanjing, China
Abstract :
A special sampled Bragg grating (SBG) configuration, which consists of two sections with same length and different effective refractive index, is proposed. Because an equivalent λ/4 phase shift based on reconstruction equivalent chirp (REC) technology is introduced, the asymmetric structure can effectively suppress the lasing in its 0th channel, and then its single longitudinal mode (SLM) property is improved. This proposed method can also be used to fabricate high performance multiwavelength laser array (MLA) with high yield.
Keywords :
Bragg gratings; chirp modulation; laser modes; optical phase shifters; quantum well lasers; refractive index; asymmetric sampled Bragg grating semiconductor laser; asymmetric structure; equivalent phase shift; high performance multiwavelength laser array; reconstruction equivalent chirp; refractive index; single longitudinal mode; single longitudinal mode property; Arrays; Distributed feedback devices; Laser modes; Refractive index; Semiconductor laser arrays;
Conference_Titel :
Microwave Photonics (MWP), 2010 IEEE Topical Meeting on
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4244-7824-8
DOI :
10.1109/MWP.2010.5664221
