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. 17, 2009
Filed:
Aug. 08, 2003
Rongchung Tyan, Irvine, CA (US);
Hee Choon Kang, Torrance, CA (US);
Edgar A. Mendoza, Redondo Beach, CA (US);
Lothar U. Kempen, Redondo Beach, CA (US);
Rongchung Tyan, Irvine, CA (US);
Hee Choon Kang, Torrance, CA (US);
Edgar A. Mendoza, Redondo Beach, CA (US);
Lothar U. Kempen, Redondo Beach, CA (US);
Neophotonics Corporation, San Jose, CA (US);
Abstract
An integrated bi-directional transceiver device for multiple wavelength optical signals that has a high level of wavelength isolation at the receivers of the device and low cross-talk of light between an external laser transmitter and the receivers. A WDM planar light wave circuit (PLC) assembly combines high spatial light confinement waveguide structures and a variable thickness dielectric wavelength selective filter (WSF) on the surface of the device to reflect a first wavelength signal and to pass a second wavelength signal. Embodiments of the invention include branching waveguide structures and folded path waveguide assemblies with multiple WSF's.