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Si Photonics Breakthrough at Kotura

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MONTEREY PARK, Calif., Feb. 2, 2010 – Silicon photonics products maker Kotura Inc. announced its demonstration of a modulator with two-volt, peak-to-peak driving voltage. Permitting the use of inexpensive CMOS drivers, the modulator has achieved speeds greater than 11 GHz and an ultralow energy consumption of 50 fJ/bit. It delivers an on-chip device loss of 2 dB, among the lowest ever demonstrated according to the company. “This technology breakthrough will enable the development of silicon photonics circuits for optical interconnect,” said Dr. Ashok Krishnamoorthy, principal investigator of the project and director at Sun...Read full article

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    Published: February 2010
    Glossary
    modulator
    A modulator is a device or component that modifies a carrier signal in order to encode information for transmission over a communication channel. The process of modulating involves varying one or more properties of the carrier signal, such as its amplitude, frequency, or phase, to represent the information being sent. Modulation is a fundamental technique in communication systems for encoding analog or digital data onto a carrier wave. There are several types of modulators, each with its own...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    wavelength
    Electromagnetic energy is transmitted in the form of a sinusoidal wave. The wavelength is the physical distance covered by one cycle of this wave; it is inversely proportional to frequency.
    Ashok KrishnamoorthyBusinessCabling SystemcircuitsCMOS DriversCommunicationsDARPADriving Voltageenergy consumptiongreen photonicsinterconnectsJagdeep ShahKoturamodulatornanoon-chipoptical interconnectsOpticsPeak-to-Peaksiliconsilicon photonicsSun MicrosystemsUltraperformance Nanophotonic Intrachip CommunicationsUnicwavelength

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