H - Electricity – 01 – L
Patent
H - Electricity
01
L
H01L 31/0232 (2006.01) G01J 1/04 (2006.01) G01J 4/04 (2006.01) G02B 27/28 (2006.01)
Patent
CA 2314709
A photodetector device comprising a photosensitive detector and at least one interface between dissimilar media is configured so that a light beam for detection will pass through the interface(s) along a beam axis that is not normal to the interface(s). The deviation from the normal will be such that polarization dependent transmission introduced at the interface(s) wall compensate for inherent polarization dependency of the detector. The deviation may be achieved by inclining the interface(s) relative to a predetermined direction along which the light beam will be incident. Where the photosensitive detector is in a housing with a window through which the light beam enters the housing, the housing can be tilted. In such as case, there are three interfaces, one at the surface of the detector, and one at each surface of the window. Alternatively, the detector surface and/or the window could be tilted. Where a pigtail fiber is permanently attached to the photodetector device to input the light beam through an interposed lens, the end of the pigtail fiber may be offset laterally from the lens optical axis so that the beam axis deviates from the normal by such an angle that the resulting polarization dependent transmission (PDT) substantially corrects for polarization dependent response (PDR) of the photosensitive detector. Facets of the pitgtail fiber, the lens, and/or the window may be inclined so that they are not perpendicular to the axis of the light beam so as to reduce interference and backreflection effects.
Babin Francois
Breton Marc
He Gang
Potvin Steeve
Schinn Gregory Walter
Adams Thomas
Babin Francois
Breton Marc
He Gang
Potvin Steeve
LandOfFree
Polarization independent photodetector device and method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polarization independent photodetector device and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization independent photodetector device and method of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2065401