Speed enhancement in VCSELs employing grating mirrors | Zendy

IlSug Chung | Zendy; Jesper Mørk | Zendy

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Speed enhancement in VCSELs employing grating mirrors

Author(s) -

IlSug Chung,

Jesper Mørk

Publication year - 2013

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.2005362

Subject(s) - vertical cavity surface emitting laser , grating , optics , optoelectronics , materials science , laser , distributed bragg reflector laser , bandwidth (computing) , semiconductor laser theory , physics , computer science , telecommunications

In recent years, various approaches to improve the speed of directly modulated vertical-cavity surface-emitting lasers (VCSELs) have been reported and demonstrated good improvement. In this paper, we propose and numerically investigate a new possibility of using high-index-contrast grating (HCG) as mirror for VCSELs. By changing the grating design, one can control the reflection delay of the grating mirror, enabling the control of cavity photon lifetime. On the other hand, short energy penetration depth of the HCG results in smaller modal volume, compared to DBR VCSELs. An example structure shows that the HCG VCSEL has a 30-% higher 3-dB bandwidth than the DBR VCSEL.

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