Tapered grating effects on static properties of a bistable QWS-DFB semiconductor laser amplifier

被引：6

作者：

Aleshams, Mahmoud ^{[1
]}

Moravvej-Farshi, M. K. ^{[1
]}

Sheikhi, M. H. ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Dept Elect & Comp Engn, Tehran 1411713116, Iran

[2] Shiraz Univ, Dept Elect Engn, Shiraz, Iran

来源：

SOLID-STATE ELECTRONICS | 2008年 / 52卷 / 01期

关键词：

distributed feedback semiconductor laser amplifier; optical dispersive bistability; phase shift; trapezoidal tapering;

D O I：

10.1016/j.sse.2007.07.003

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：

Using the steady-state model based on the coupled-mode and carrier rate equations, in this paper, we analyze the effects of trapezoidal tapered gratings on the dispersive bistable characteristics of a quarter wavelength phase-shifted distributed feedback semiconductor laser amplifier (QWS-DFB-SLA). We also compare the results with those of a purely QWS-DFB-SLA. For laser amplifiers driven to yield the same unsaturated peak amplifier gain, trapezoidal taper widens the spectral range of low-threshold bistable switching and increases the on-off switching contrast. The transfer-matrix method (TMM) is utilized for the numerical simulations. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：156 / 163

页数：8

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