NDLI: Self-Consistent Simulation Model and Enhancement of Wavelength Tuning of InGaAsP/InP Multisection DBR Laser Diodes

Content Provider	IEEE Xplore Digital Library
Author	Kyritsis, G. Zakhleniuk, N.
Copyright Year	1995
Abstract	A detailed investigation of various physical contributions to the refractive index change due to injection of free carriers and their effect on the wavelength tuning in a three-section InGaAsP/InP semiconductor tunable laser diode (TLD) is carried out using Crosslight PICS3D software. A comprehensive numerical model of a TLD is presented with the wavelength tuning based on a simultaneous consideration of optical and free carrier transport phenomena. The main difference of our study from most of the previous works is that the investigation is applied to the operating multisection active device rather than to a device with a predetermined refractive index change used as the input parameter. The only inputs in our model are the injection currents at the contacts of each section. We have demonstrated possibility of 30 nm discontinuous and 15 nm continuous tuning in the optimized TLD. We study the influence of design parameters, such as the coupling coefficient κ and Bragg section length L, on the tuning performance of the Bragg section of the TLD. The tuning performance of the TLD depends strongly on the mutual positions of the peak gain wavelength and the Bragg wavelength at the beginning of the tuning. The tuning range is strongly affected by the material composition of the Bragg grating. We found that wavelength tuning saturation may take place in typical devices in spite of the continuing change of the effective refractive index with the current injection. It is shown that with careful design optimization and selection of κ and L, the saturation effect can be completely eliminated and the tuning range of the TLD can be increased up to two to three times.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1
Ending Page	11
Page Count	11
File Size	1172203
File Format	PDF
ISSN	1077260X
Volume Number	19
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	wavelength tuning Bragg reflector coupling coefficient crosslight PICS3D reflectivity spectrum refractive index change simulation tunable laser diode
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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