Light Peak

In: Computers and Technology

Submitted By zjklee
Words 941
Pages 4
Light Peak
Light Peak is a proprietary optical cable interface designed by Intel to connect devices in a peripheral bus. The technology has a high bandwidth at 10 Gbit/s, with the potential to scale to 100 Gbit/s by 2020.
Currently in development, Light Peak is being developed as a single universal replacement for current buses such as SCSI, SATA, USB, FireWire, PCI Express and HDMI, in an attempt to reduce the proliferation of ports on contemporary computers. Bus systems such as USB were developed for the same purpose, and successfully replaced a number of older technologies. However, increasing bandwidth demands have led to higher performance standards like eSATA and DisplayPort that cannot connect to USB and similar peripherals. Light Peak provides a high enough bandwidth to drive these over a single type of interface, and often on a single daisy chained cable.
As a single universal replacement for current buses such as SCSI, SATA, USB, FireWire, PCI Express and HDMI, Light Peak aims to remove some of the problems in the computer industry that are now apparent such as the limited transfer speeds and multiple connectors, many of which must be supported and then are often fated to go completely unused.
A major problem in single-cable connection is the maximum length of electrical cables – DC power and electrical signals diminish rapidly over more than 5 meter distances.
In theory, a device under 5m away could be easily served by either a 10Gb DC PoE or 4.8Gb USB 3 interface on a single cable for both power and data. However, if the device must be more than 5m away it will be separately powered by AC and must necessarily rely on an optical cable anyway to achieve sustained 10Gb speeds, whether this is an Ethernet "short reach" (300m) or Light Peak (100m) cable.
Light Peak is often billed as a "USB3…...

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