US Patent 7551657 Magneto-optoelectronic switch and sensor

Patent 7551657 was granted and assigned to Brown University on June, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Brown University

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75516570

Patent Inventor Names

Arto V Nurmikko0

Date of Patent

June 23, 2009

Patent Application Number

122881730

Date Filed

October 16, 2008

Patent Primary Examiner

‌

Armando Rodriguez

Patent abstract

A Magneto-Optoelectronic Device MOD (10) includes a magnetic sensing device (12), such as a magnetoresistive device or a magnetic tunnel junction device, that is combined with a semiconductor light emitter (14), such as a LED or a laser diode, to create a compact integrated device where changes in an ambient magnetic field are expressed as changes in an optical beam intensity emanating from the MOD. Using the MOD (10) the magnetic field related information can be transmitted by a light wave over very large distances through some medium (34), for example, through free space and/or through an optical fiber.