Timing measurement apparatus
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United States of America Patent
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Sep 13, 2022
Grant Date -
Jan 21, 2021
app pub date -
Jun 10, 2020
filing date -
Jul 17, 2019
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Abstract
Methods, devices and systems for providing accurate measurements of timing errors using optical techniques are described. An example timing measurement device includes an optical hybrid that receives two optical pulse trains and produces two or more phase shifted optical outputs. The timing measurement device further includes two or more optical filters that receive the outputs of the optical hybrid to produce multiple pulse signals with distinctive frequency bands. The device also includes one or more photodetectors and analog-to-digital converters to receive to produce electrical signals in the digital domain corresponding to the optical outputs of the hybrid. A timing error associated with the optical pulse trains can be determined using the electrical signals in digital domain based on a computed phase difference between a first frequency band signal and a second frequency band signal and a computed frequency difference between the first frequency band signal and the second frequency band.
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- 15 United States
- 10 France
- 8 Japan
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Patent Owner(s)
- LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chou, Jason Thomas | Walnut Creek, US | 10 | 26 |
DeVore, Peter Thomas Setsuda | Livermore, US | 9 | 30 |
Gowda, Apurva Shantharaj | Mountain View, US | 10 | 26 |
Olson, Joshua Linne | Manassas, US | 2 | 4 |
Perlmutter, David Simon | Oakland, US | 10 | 26 |
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