NDLI: Travelling-wave modelling of the modulation dynamic performance of wavelength-tunable laser diodes using the integrated VPI and PICS3D software

Content Provider	IET Digital Library
Author	Duzgol, Onur Kyritsis, Georgios Zakhleniuk, Nick
Abstract	The modulation dynamic performance of a three-section bulk InGaAsP/InP tunable laser diode (TLD) operating at 1550-nm under direct intensity modulation during discontinuous tuning is investigated with the travelling-wave approach, using commercial software tools VPI and PICS3D. The authors demonstrate a strong effect of the gain spectra shape on the modulation response of the TLDs. Two models have been developed for simulation of the modulation response which incorporate real gain spectra of TLDs obtained either from experiment or ab-initio calculations: (i) the VPI + PICS3D integrated model, and (ii) the fitted parabolic shape gain model. The results obtained for both models are in good agreement. A significant ∼3 times increase of the relaxation oscillation frequency and the corresponding modulation bandwidth was observed under blue wavelength tuning of the TLD over a 21-nm range from the initial 1550-nm lasing wavelength. The authors show that the main physical reason for this increase is a dispersion of the differential gain which increases about 4 to 5 times when the lasing wavelength decreases over the above tuning range. The reported enhancement of the modulation response of TLDs is important for their practical applications.
Starting Page	66
Ending Page	72
Page Count	7
ISSN	17518768
Volume Number	11
e-ISSN	17518776
Issue Number	Issue 2, Apr (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-opt/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-opt.2016.0067
Journal	IET Optoelectronics
Publisher Date	2017-01-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Ab Initio Calculations Ab-initio Calculations Blue Wavelength Tuning Design of Specific Laser System Differential Gain Dispersion Direct Intensity Modulation Discontinuous Tuning Gain Spectra Gallium Arsenide Gallium Compound III-V SemiConductor Indium Compound InGaAsP-InP Integrated PICS3D Software Tool Integrated VPI Software Tool Intensity Modulation Laser Beam Modulation Laser Tuning Lasing Action in SemiConductor Lasing Wavelength Mode Locking And Tuning Modulation Bandwidth Modulation Dynamic Performance Optical Engineering Computing Optical Modulation Parabolic Shape Gain Model Pulsing And Switching Relaxation Oscillation Frequency Semiconductor Laser Three-section Bulk Tunable Laser Diode Travelling-wave Modelling Wavelength 1550 Nm Wavelength-tunable Laser Diode
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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