Characteristics of multimode fiber Bragg gratings and their influences on external-cavity semiconductor lasers

被引：15
|
作者：
Yu, HG [1 ]
Wang, Y [1 ]
Xu, QY [1 ]
Xu, CQ [1 ]
机构：
[1] McMaster Univ, Dept Engn Phys, Hamilton, ON L8S 4L7, Canada
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2006年 / 24卷 / 04期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
external-cavity semiconductor lasers (ECSLs); fiber Bragg grating (FBG); multimode fiber (MMF); polarization; side-mode-suppression ratio (SMSR);
D O I：
10.1109/JLT.2006.871029
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Characteristics of multimode fiber Bragg gratings (MMFBGs) are systematically studied. Dependence of the reflection spectra of MMFBG on excitation conditions, refractive-index change profile, and grating length is investigated experimentally. It is observed that the transmission spectra of the MMFBGs are more sensitive to the polarization state of input light than that of single-mode FBGs (SMFBGs). The influences of the fabrication conditions of MMFBGs (i.e., UV-exposure time) and the rotation of MMF on the output spectra of the MMFBG-based external-cavity semiconductor lasers are then investigated. It is found that the side-mode-suppression ratio and the spatial wavelength-locking region at a specific Bragg wavelength of an MMFBG are dependent on the refractive-index change profile of the grating.
引用
收藏
页码：1903 / 1912
页数：10
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