Abstract
A highly-efficient and ultra-high speed VCSEL is a key device for data center photonics. It is a challenge to go beyond the limit of relaxation oscillation frequencies. One way to go beyond the limit is using the Push-Pull modulation scheme [1]. In this paper, a unique concept to couple transversely-integrated VCSELs is proposed and demonstrated. Lasing characteristics of far-field/near-field patterns indicate clear evidence of coherent lateral coupling of two cavities.
© 2013 Japan Society of Applied Physics, Optical Society of America
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