Hee Chul Kang

US Patent:

7492992, Feb 17, 2009

Filed:

Aug 8, 2003

Appl. No.:

10/637199

Inventors:

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

Assignee:

Neophotonics Corporation - San Jose CA

International Classification:

G02B 6/26
G02B 6/42

US Classification:

385 45, 385 15, 385 31, 385 39, 385 42, 385 49, 385 50

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.