13 March 2013 Push-pull modulation of lateral coupling of dual VCSEL cavities using a bow-tie shape
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Abstract
We propose the lateral coupling of dual VCSEL cavities using a bow-tie shape connection for increasing the modulation bandwidth. The 3-D modeling shows no-noticeable radiation loss when two oxide-defined VCSEL cavities are coherently coupled. Transverse-mode switching offers a unique modulation concept that makes intensity modulation while total photon density inside the coupled cavities is unchanged under push-pull current modulation. Large modulation bandwidth free from relaxation oscillation frequencies can be expected. We fabricated 980nm laterally coupled cavity VCSELs with a bow-tie shape oxide aperture and demonstrated the transverse-mode switching under push-pull operations.
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Hamed Dalir, Hamed Dalir, Akihiro Matsutani, Akihiro Matsutani, Fumio Koyama, Fumio Koyama, } "Push-pull modulation of lateral coupling of dual VCSEL cavities using a bow-tie shape", Proc. SPIE 8639, Vertical-Cavity Surface-Emitting Lasers XVII, 86390W (13 March 2013); doi: 10.1117/12.2003692; https://doi.org/10.1117/12.2003692
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