Optical characteristic measurement and compensation...

Optics: measuring and testing – For optical fiber or waveguide inspection

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

06909497

ABSTRACT:
The invention relates to an entangled-photon apparatus capable of measuring particular characteristics of an optical element, device or channel and further capable of correcting for the effects of these characteristics in an optical communications signal propagating through the same optical element. The apparatus includes a source of entangled photons (twinons), which are injected into the device under test along with the communications signal, and a two branch quantum interference device (QID) for determining the state of entanglement of the photons after they pass through the device. The QID includes a variable delay element that is incremented to equalize the twinon correlation in the two branches of the QID. A second variable delay element, slaved to the first, applies the corresponding compensation to the communications signal.

REFERENCES:
patent: 6175416 (2001-01-01), Maris et al.
patent: 6646727 (2003-11-01), Saleh et al.
patent: 6788410 (2004-09-01), Otani et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Optical characteristic measurement and compensation... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical characteristic measurement and compensation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical characteristic measurement and compensation... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3508631

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.