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On-Board Optics Expand Bandwidth and Reduce Power Use in the Data Center

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As demand for data bandwidth grows, co-packaged and on-board optics aim to reduce power consumption per bit while achieving higher channel densities.

NIKOLAUS FLÖRY, VARIO-OPTICS AG

Co-packaged optics (CPO) and on-board optics (OBO) are not novel concepts, per se. The benefits of moving optics closer to the computing cores of data center switches have been clear to systems developers since optical glass fiber was first adopted for long-haul optical transmission. But although the task is relatively straightforward to replace electrical wires with glass fibers in long-distance networks, the technological complexity of integrating optics at the board or module level has proved to be more challenging. An electro-optical circuit board treats the optical layer as an...Read full article

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    Published: February 2023
    Glossary
    integrated optics
    A thin-film device containing miniature optical components connected via optical waveguides on a transparent dielectric substrate, whose lenses, detectors, filters, couplers and so forth perform operations analogous to those of integrated electronic circuits for switching, communications and logic.
    Featuresfiber opticsintegrated opticsVCSELsCommunications

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