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We report the novel method that can give high coupling efficiency between a vertical-cavity surface-emitting laser (VCSEL) array and a multimode optical fiber ribbon by using a hybrid-polymer-fiber lens technique. The coupling efficiency as high as 91% was achieved by optimizing the polymer lens curvature for the single source to the single fiber case. The longitudinal and the transverse coupling...
We report a 4x4 HPCF coupler, HPCF pigtailed VCSEL and PIN PD with a low insertion loss and coupling loss, which can be readily applied in high speed short reach PON.
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