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Ultra Communications has
developed a unique photonic packaging approach
that combines optoelectronic devices (such as
VCSELs, PINs) with silicon-on-sapphire (SOS)
circuits and lenses using flip-chip bonding. The
result is an extremely compact, low-cost, and
robust component for optical communications. We
have demonstrated fiber based and free space
optical interconnects (board-to-board) with this
technology. The arrangement enables the optical
measurement of each VCSEL channel through an
integrated photodector, allowing for wide
temperature range operation and built-in test
functionality. |
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Flip-chip assembly with
the IC containing the flip-chip VCSEL/PIN
devices on a ceramic gull-wing package (without
lens attached) |
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VCSEL
flip-chip attached to the Integrated Circuit
(view through the sapphire substrate of the SOS
circuit) |
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