| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 749320 | Solid-State Electronics | 2008 | 8 Pages |
Abstract
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.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
Mahmoud Aleshams, M.K. Moravvej-Farshi, M.H. Sheikhi,