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:
Feb. 20, 1996
Filed:
Nov. 23, 1994
George H Thompson, Sawbridgeworth, GB;
Northern Telecom Limited, Montreal, CA;
Abstract
An integrated optics polarization state converter comprises optically in series a first TM.sub.0 to TM.sub.1 mode converter that is substantially transparent to TE.sub.0, a concatenation of total internal reflectors and a second TM.sub.0 to TM.sub.1 converter, similarly substantially transparent to TE.sub.0, which is connected the way round so as to operate as a TM.sub.1 to TM.sub.0 converter. Each TM.sub.0 to TM.sub.1 converter may comprise a tandem arrangement of a 2.times.2 TE.sub.0 /TM.sub.0 polarization beam splitting coupler and a mismatched, 3 dB maximum, 2.times.2 beam splitting coupler. The place of the TM.sub.0 to TM.sub.1 converters substantially transparent to TE.sub.0 may be taken by TE.sub.0 to TE.sub.1 converters substantially transparent to TM.sub.0.