中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共3条，第1-3条

帮助

条数/页：排序方式：
	Suppressing longitudinal spatial hole burning with dual assisted phase shifts in pitch-modulated DFB lasers 期刊论文 OAI收割 SCIENCE BULLETIN, 2015, 卷号: 60, 期号: 11, 页码: 7 作者: Guo, RJ; Zheng, JS; Zhang, YS; Shi, YC; Li, LY 收藏 \| 浏览/下载：70/0 \| 提交时间：2015/12/31 Distributed feedback corrugation-pitch-modulated Reconstruction equivalent chirp Spatial hole burning
	Continuous-wave (CW) broadband generation in a linear cavity filterless fiber laser 期刊论文 OAI收割 OPTICS COMMUNICATIONS, 2014, 卷号: 324, 页码: 157-159 作者: Liu, Haina; Wang, Pinghe; Shi, Guohua; Peng, Hanlin; Liu, Yong 收藏 \| 浏览/下载：45/0 \| 提交时间：2015/07/10 Fiber lasers Supercontinuum generation Spatial-hole burning
	Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文 OAI收割 Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China 作者: Liu Y.; Liu Y.; Qin L.; Liu Y.; Wang L. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 Based on the modified coupled-wave theory the emission characteristics including threshold gain photon density distribution in the cavity and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating we can change the two coupling coefficients which affect the emission characteristics. For an overall consideration an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47% respectively. 2010 SPIE.