All Silicon Passive Optical Diode

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Electrons moving through an electronic circuit have a limited speed, so with faster chips always in demand, engineers may switch to optical circuits. By using light instead of electrons to transport and process information, higher transmission speeds are possible. This technology has already been used in fiber-optic data transmission and other specialized applications, but the lack of practical optical logical components has limited its use in computational applications.

Researchers at Purdue University have developed a design for a new silicon-based optical diode that can be integrated with existing complementary metal-oxide-semiconductor (CMOS) technology. Diodes are an important component in electrical circuits, which only allow currents to pass in one direction. Logical gates, the basis of digital computing, can be created by combining diodes with other electric components. Existing designs for optical diodes are not silicon-based or compatible with CMOS devices, which limits integrating them into existing electronics. The new design has been realized with a higher nonreciprocal transmission ratio than existing designs.

Advantages:
-Optical computing components allows for faster silicon chips
-Compatible with existing CMOS environment
-Higher nonreciprocal transmission ratio than existing designs

Potential Applications:
-Electronics industry
-Semiconductor industry
Jun 19, 2017
CON-Patent
United States
9,958,608
May 1, 2018

Sep 2, 2014
NATL-Patent
United States
9,684,127
Jun 20, 2017

Oct 15, 2012
PCT-Patent
WO
(None)
(None)

Mar 2, 2012
Provisional-Patent
United States
(None)
(None)
Purdue Office of Technology Commercialization
1801 Newman Road
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org