US Patent 7126749 Semiconductor optical amplifier with low polarization gain dependency

Patent 7126749 was granted and assigned to Quantum photonics on October, 2006 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Quantum photonics

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71267490

Date of Patent

October 24, 2006

Patent Application Number

103236300

Date Filed

December 20, 2002

Patent Primary Examiner

‌

Mark Hellner

Patent abstract

A semiconductor optical amplifier (SOA) has an overall gain that is substantially polarization independent, i.e., less than 1 dB difference between transverse electric (TE) and transverse magnetic (TM) gain. The SOA includes gain and polarization rotation functions integrated onto a single substrate. According to one exemplary embodiment, a passive polarization rotation section is disposed between two active gain sections.

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