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Ultralow threshold microcavity lasers are ideal candidates for high-density optical interconnect light sources. Although they have been extensively studied for the last decade, muA-level electro-pumped quantum confined lasers are still under investigation. Photonic-corral-mode quantum ring (PQR) lasers with the linewidth narrower than 0.55 generate micro-to-nano-ampere thresholds, and become ideal...
We have fabricated flip-chip ready 850 nm VCSEL with BCB planarization for optical printed circuit board. Low threshold current, high slope efficiency, and open eye diagram with high margin at 2.5 Gbps modulation are obtained in the VCSEL.
Summary form only given. A single-chip photonic Banyan network has been demonstrated by using bean-steering VCSELs and reflective Fresnel zone plate array. The focusing mirror reduces the beam spot to 15 /spl mu/m, and can greatly increase the optical interconnection density.
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