Theoretical investigation of passively mode-locked quantum dot laser

Aref Rasoulzadehzali, Mohammad Kazem Moravvej-farshi, Javad Rahimi, Mohammad Hassan Yavari

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


Using models based on delay differential equation (DDE) and finite difference traveling wave (FDTW), we have obtained the characteristics of passively quantum dot mode-locked lasers (QD-MLLs). By manipulating DDE, it is shown that by an increase in the saturable absorber's (SA) reverse bias, the pulse width decreases while the stability of the pulse time domain response decreases. Besides, the range of enhancement factor to have a stable pulse decreases as well. Moreover, DDE model shows that by controlling unsaturated gain and loss ratio harmonic mode locking is achievable. Finally, FDTW model is used to investigate the spatio-temporal features of QD-MLLs. Although this method substantially increases the simulation complexity due to the complex rate equations alongside with two dimensional simulation grid, it provides a more comprehensive simulation tool for analysing the device.
Original languageEnglish
Title of host publication24th Iranian Conference on Electrical Engineering (ICEE)
Place of PublicationPiscataway
PublisherInstitution of Mechanical Engineers
Number of pages6
ISBN (Electronic)978-1-4673-8789-7
Publication statusPublished - May 2016
Externally publishedYes
Event24th Iranian Conference on Electrical Engineering (ICEE) - Shiraz, Iran, Islamic Republic of
Duration: 10 May 201612 May 2016


Conference24th Iranian Conference on Electrical Engineering (ICEE)
Country/TerritoryIran, Islamic Republic of


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