Time-Domain Large Signal Investigation on Dynamic Responses of the GDCC Quarterly Wavelength Shifted Distributed Feedback Semiconductor Laser

TL;DR

This paper presents a numerical time-domain analysis of a quarter wave-shifted distributed feedback semiconductor laser with Gaussian coupling, showing improved single-mode operation and hole-burning effects for large coupling coefficients.

Contribution

It introduces a new time-domain traveling wave model for GDCC lasers, demonstrating significant improvements in laser stability and mode purity.

Findings

Enhanced single-mode behavior with large coupling coefficients

Significant reduction in hole-burning effects

Improved dynamic response of the laser

Abstract

A numerical investigation on the dynamic large-signal analysis using a time-domain traveling wave model of quarter wave-shifted distributed feedback semiconductor lasers diode with a Gaussian distribution of the coupling coefficient (GDCC) is presented. It is found that the single-mode behavior and the more hole-burning effect corrections of quarter wave-shifted distributed feedback laser with large coupling coefficient can be improved significantly by this new proposed light source.