Large area multitransverse-mode VCSELs for modal noise reduction in multimode fibre systems

Hahn, Kyu S.; Tan, M.R.T.; Houng, Y.M.; Wang, S.Y.

doi:10.1049/el:19930990

Cited by 86 publications

(22 citation statements)

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“…These studies concentrated on the multitransverse mode dynamics of devices with small activeregion diameters. However, larger VCSEL's, with activeregion diameters of the order of 25 m, are favored for short-distance optical links [12], [13]. These wide-area devices present more complex multimode dynamics, especially during fast modulation.…”

Section: Introductionmentioning

confidence: 99%

Transient response of vertical-cavity surface-emitting lasers of different active-region diameters

Buccafusca

Chilla

Rocca

et al. 1999

IEEE J. Quantum Electron.

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Abstract-The multimode dynamics of vertical-cavity surfaceemitting lasers with different active-region diameters was measured under subnanosecond electrical excitation (800-ps pulse duration, 100-ps risetime). The dynamics is characterized by the delayed onset of higher order modes which have a turn-on delay that is dependent on the active-region diameter and the excitation parameters. A simple model that can be used to estimate this turn-on delay for large-area devices is presented. Polarizationresolved measurements show that, under this fast excitation condition, both orthogonal polarization states are isomorphic. The influence of the observed dynamics on the relative intensity noise of these devices is also discussed.

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Section: Introductionmentioning

confidence: 99%

Transient response of vertical-cavity surface-emitting lasers of different active-region diameters

Buccafusca

Chilla

Rocca

et al. 1999

IEEE J. Quantum Electron.

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“…These transverse modes are beneficial in that they reduce the coherence of the source in ways similar to the longitudinal modes of the selfpulsating edge-emitting laser ( Fig. 14.6) [5,6]. As a consequence, large aperture VCSELs are well-suited in suppressing modal noise as well as enabling simple, low-cost laser-to-fiber coupling approaches for multimode optical fiber data links.…”

Section: The Need For Vcselsmentioning

confidence: 96%

VCSEL-Based Transceivers for Data Communications

Jackson

Schow

2012

Springer Series in Optical Sciences

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The data communications (datacom) transceiver market has experienced tremendous growth over the last fifteen years due in large part to the use of verticalcavity surface-emitting lasers (VCSELs) and multimode optical fibers. This chapter reviews the evolution of 850 nm laser-based datacom transceivers beginning with the early use of AlGaAs edge-emitters to the adoption of VCSELs where their unique attributes have enabled significant performance enhancements and cost reductions in transceiver designs. IntroductionIn 2009 over 18 million 850 nm wavelength VCSEL-based datacom transceivers were sold resulting in revenue of almost US$ 500 million. The size and scope of this market has grown tremendously over the last fifteen years, driven primarily by the use of VCSELs. VCSEL technology, along with the use of multimode optical fibers, have been key enablers for low-cost optical interconnects. These low cost optical interconnects are attractive solutions for a wide range of data communications applications including storage and local area networks (SANs and LANs) as well as system interconnects for high performance computing (HPC).VCSELs for datacom transceivers have evolved from the early days when they were used as replacements for short wavelength edge-emitting lasers to today,

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“…The multitransverse mode behaviour of VCSEL modifies the spatial, spectral and noise characteristics of the system. The development of strategies to avoid multimode behaviour oscillation in large apertures devices is interesting for many applications although, on the other hand, multimode operations of the VCSEL is useful in multimode fibre links in order to reduce the modal noise [2].…”

Section: Introductionmentioning

confidence: 99%

Influence of the carrier diffusion process on the transient response of vertical‐cavity surface‐emitting lasers

Torre

Ranea‐Sandoval

2003

Int J Numerical Modelling

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SUMMARYWe investigate the transverse mode dynamics of weakly index-guided vertical-cavity surface-emitting lasers (VCSEL). The turn-on time of transverse modes are calculated by implementing a model for the VCSEL dynamics including diffusion and transport/capture phenomena. It takes into account the spatial dependence of the two carrier density profiles associated with the confined carriers in the quantum wells, and with the unconfined carriers in the barrier region. Devices of different aperture diameter under different excitation conditions are also studied. The model displays the correct turn-on time dependence on the injection current density when compared with the experimental data available. We show that the turnon time of the modes increases when capture time increases and escape time decreases and also when diffusion increases.

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Large area multitransverse-mode VCSELs for modal noise reduction in multimode fibre systems

Cited by 86 publications

References 1 publication

Transient response of vertical-cavity surface-emitting lasers of different active-region diameters

Transient response of vertical-cavity surface-emitting lasers of different active-region diameters

VCSEL-Based Transceivers for Data Communications

Influence of the carrier diffusion process on the transient response of vertical‐cavity surface‐emitting lasers

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