ALICE LIU, MD
Osteopathic Medicine at Industrial Rd, San Carlos, CA
License number
California A87988
Category
Osteopathic Medicine
Type
Endocrinology, Diabetes & Metabolism
Address
Address
2
301 Industrial Rd, San Carlos, CA 94070
2350 W. El Camino Real FLOOR 2ND, Mountain View, CA 94040
2350 W. El Camino Real FLOOR 2ND, Mountain View, CA 94040
Phone
(650) 596-4030
Professional information
Integrated Optical Device With Polarization Based Signal Routing
US Patent:
2002017, Nov 21, 2002
Filed:
Mar 15, 2001
Appl. No.:
09/808107
Inventors:
Robert McLeod - Morgan Hill CA, US
Alice Liu - Mountain View CA, US
Tokuyuki Honda - Mountain View CA, US
Alice Liu - Mountain View CA, US
Tokuyuki Honda - Mountain View CA, US
International Classification:
G02B005/30
US Classification:
359/484000, 359/495000, 359/496000, 359/497000
Abstract:
An integrated WDM device is provided by replacing fiber routing with a birefringent routing element, e.g. a rutile crystal. The device has a routing block for directing an incoming polarized light beam launched into its input port in one of two directions in dependence upon the polarization state of the light beam. A plurality of thin film filter (TFF) elements is provided in a zig-zag pattern on both faces of the routing block for filtering specific wavelengths of the beam. A rotator is provided for rotating the polarization of a portion of the beam so that it follows a separate path after reflection from the optical filter element, the path corresponding to the zig-zag arrangement of the TFF elements. If the incoming beam is non-polarized, polarization diversity elements are disposed in the optical path of the beam to control the polarization. The device may function as a WDM or as an add/drop multiplexer/demultiplexer.