The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2016
Filed:
Dec. 19, 2014
Gooch and Housego Plc, Ilminster, Somerset, GB;
Gooch and Housego PLC, Somerset, GB;
Abstract
A method of free space fiber-to-fiber coupling includes providing a first optical fiber and a second optical fiber spaced apart from one another by a free space distance having a pair of spaced-apart achromatic collimating lenses within the free space distance. Essentially single mode light is launched from the first fiber at a wavelength λ or a range of λs that provides at least a portion of its light at wavelength(s) below a cut-off wavelength for the first fiber. The first optical fiber and second optical fiber are both <50 m and sufficiently short to provide essentially single mode operation. The essentially single mode light after the launching propagates as free space light through said free space distance and is received by and propagates in the second optical fiber as essentially single mode light.