Field programmable optical filter
US-2024128992-A1 · Apr 18, 2024 · US
Reconstruction and restoration of an optical signal field
US9312964B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9312964-B2 |
| Application number | US-52578606-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 22, 2006 |
| Priority date | Sep 22, 2006 |
| Publication date | Apr 12, 2016 |
| Grant date | Apr 12, 2016 |
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Abstract
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A digital version of both amplitude and phase of a received optical is developed by employing direct differential detection in conjunction with digital signal processing. The signal is split into three copies. An intensity profile is conventionally obtained using one of the copies. Phase information is obtained by supplying each remaining copy to a respective one of a pair of optical delay interferometers that have orthogonal phase offsets, followed by respective balanced intensity detectors. The output of each of the balanced intensity detectors, and the intensity profile, are each converted to respective digital representations. Signal processing is used to develop the phase information from the digital representations of the output of the balanced intensity detector outputs.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical receiver, comprising: a direction differential detection receiver, said direct differential detection receiver being configured to receive an incoming optical signal as an input and to supply as an output analog representations of real and imaginary part of a complex waveform that contains information about phase difference between a plurality of time locations in said incoming optical signal that are spaced by a prescribed amount; and a signal…
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Electricity · mapped topic
- H04B10/60Primary
Electricity · mapped topic
- H04B10/677Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9312964B2 cover?
- A digital version of both amplitude and phase of a received optical is developed by employing direct differential detection in conjunction with digital signal processing. The signal is split into three copies. An intensity profile is conventionally obtained using one of the copies. Phase information is obtained by supplying each remaining copy to a respective one of a pair of optical delay inte…
- Who is the assignee on this patent?
- Liu Xiang, Wei Xing, Alcatel Lucent
- What technology area does this patent fall under?
- Primary CPC classification H04B10/60. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).